US3872666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method, system and apparatus for controlling temperatures of exhaust gases in emission control systems
Assignee: AP Parts Manufacturing Co
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Filing: 1972-10-04
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Granted: 1975-03-25
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Expires: 1992-10-04
Abstract
Abstract The disclosure embraces a method, system and apparatus for controlling temperatures of exhaust gases in an emission control system or arrangement and is inclusive of a method and apparatus for reducing excessive temperatures in an exhaust gas receiving chamber which may result from malfunction of normal engine operation wherein such excessive temperatures may exceed the critical temperatures of the materials used in the construction of exhaust emission control devices, the method and apparatus involving interruption of air flow to the exhaust gas receiving chamber to retard or reduce oxidation or combustion in the system and the concomitant delivery of a heat-absorbing or quenching fluid into the system to rapidly absorb and dissipate excessive thermal energy.
Inventors
- 👤 David R Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:20
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
77 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation is occurring of unburned constituents in the exhaust gases including sensing the temperature of the exhaust gases in the passage by a temperature sensor, activating the sensor at a predetermined high temperature of the exhaust gases, and flowing a quenching liquid upon activation of the sensor into the exhaust gases to reduce the temperatures of the gases.
Claim 2
Independent Claim
77 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation is occurring of unburned constituents in the exhaust gases including sensing the temperature of the exhaust gases in the passage by a temperature sensor, activating the sensor at a predetermined high temperature of the exhaust gases, and flowing a quenching liquid upon activation of the sensor into the exhaust gases to reduce the temperatures of the gases.
Claim 3
Independent Claim
84 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation is occurring of unburned constituents in the exhaust gases including sensing the temperature of the exhaust gases in the passage by a temperature sensor, activating the sensor by the heat of the exhaust gases at a predetermined high temperature, and delivering a quenching liquid under pressure upon activation of the sensor into the exhaust gases to rapidly reduce the temperature of the exhaust gases.
Claim 4
Independent Claim
84 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation is occurring of unburned constituents in the exhaust gases including sensing the temperature of the exhaust gases in the passage by a temperature sensor, activating the sensor by the heat of the exhaust gases at a predetermined high temperature, and delivering a quenching liquid under pressure upon activation of the sensor into the exhaust gases to rapidly reduce the temperature of the exhaust gases.
Claim 5
Independent Claim
91 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including sensing the temperature of the exhaust gases in the passage, interrupting the flow of air into the exhaust gases through the medium of the sensor when the gases attain a predetermined high temperature, and delivering a heat-absorbing fluid into the high temperature gases to reduce the temperature of the gases.
Claim 6
Independent Claim
91 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including sensing the temperature of the exhaust gases in the passage, interrupting the flow of air into the exhaust gases through the medium of the sensor when the gases attain a predetermined high temperature, and delivering a heat-absorbing fluid into the high temperature gases to reduce the temperature of the gases.
Claim 7
Independent Claim
79 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold chamber in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing a controlled amount of air into the exhaust gases including reducing flow of air into the exhaust gases when the exhaust gases reach a predetermined high temperature, and concomitantly feeding an oxidation retarding fluid into the exhaust gases to thereby reduce the temperature of the gases.
Claim 8
Independent Claim
79 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold chamber in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing a controlled amount of air into the exhaust gases including reducing flow of air into the exhaust gases when the exhaust gases reach a predetermined high temperature, and concomitantly feeding an oxidation retarding fluid into the exhaust gases to thereby reduce the temperature of the gases.
Claim 9
Independent Claim
90 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including interrupting flow of air into the exhaust gases when the temperature resulting from oxidation occurring in the manifold becomes excessive, and concomitantly feeding a quenching fluid into the exhaust gases to quench the oxidation and thereby reduce the temperature of the exhaust gases and the temperature of the manifold.
Claim 10
Independent Claim
90 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including interrupting flow of air into the exhaust gases when the temperature resulting from oxidation occurring in the manifold becomes excessive, and concomitantly feeding a quenching fluid into the exhaust gases to quench the oxidation and thereby reduce the temperature of the exhaust gases and the temperature of the manifold.
Claim 11
Independent Claim
89 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including interrupting Flow of air into the exhaust gases when the temperature of the exhaust gases becomes abnormally high, concomitantly feeding a nonoxidizable medium into the exhaust gases, and reducing oxidation by the medium to rapidly reduce the temperature of the exhaust gases and the temperature of the manifold.
Claim 12
Independent Claim
89 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold in which oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases including interrupting Flow of air into the exhaust gases when the temperature of the exhaust gases becomes abnormally high, concomitantly feeding a nonoxidizable medium into the exhaust gases, and reducing oxidation by the medium to rapidly reduce the temperature of the exhaust gases and the temperature of the manifold.
Claim 13
Independent Claim
121 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber including flowing air into the exhaust gases promoting oxidation of unburned constituents in the exhaust gases, flowing the exhaust gases from the chamber through a passage, transferring heat from the gases in the passage to the air flowing into the exhaust gases for preheating the air, sensing the temperature of the gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of preheated air into the exhaust gases when the gases attain a predetermined high temperature, and delivering an oxidation retarding fluid into the exhaust gases concomitantly with the interruption of the flow of preheated air.
Claim 14
Independent Claim
121 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber including flowing air into the exhaust gases promoting oxidation of unburned constituents in the exhaust gases, flowing the exhaust gases from the chamber through a passage, transferring heat from the gases in the passage to the air flowing into the exhaust gases for preheating the air, sensing the temperature of the gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of preheated air into the exhaust gases when the gases attain a predetermined high temperature, and delivering an oxidation retarding fluid into the exhaust gases concomitantly with the interruption of the flow of preheated air.
Claim 15
Independent Claim
114 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber including flowing air into the exhaust gases promoting oxidation of unburned constituents in the exhaust gases, flowing exhaust gases from the chamber into a catalytic reactor, sensing the temperature of the exhaust gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of air into the exhaust gases in the chamber when the gases attain a predetermined high temperature, and delivering a quenching fluid into the exhaust gases in the chamber concomitantly with the interruption of the flow of air to rapidly reduce the temperature of the exhaust gases.
Claim 16
Independent Claim
114 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber including flowing air into the exhaust gases promoting oxidation of unburned constituents in the exhaust gases, flowing exhaust gases from the chamber into a catalytic reactor, sensing the temperature of the exhaust gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of air into the exhaust gases in the chamber when the gases attain a predetermined high temperature, and delivering a quenching fluid into the exhaust gases in the chamber concomitantly with the interruption of the flow of air to rapidly reduce the temperature of the exhaust gases.
Claim 17
Independent Claim
158 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing air into the exhaust gases in the chamber, flowing exhaust gases from the chamber into a catalytic reactor, flowing exhaust gases from the reactor through a passage, transferring heat from the exhaust gases in the passage to the air flowing into the exhaust gases in the chamber for preheating the air, flowing preheated air into the catalytic reactor, sensing the temperature of the exhaust gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of preheated air into the exhaust gases in the chamber when the gases attain a predetermined high temperature, and delivering a heat-absorbing oxidation-retarding fluid into the exhaust gases in the chamber concomitantly with the interruption of the flow of preheated air into the chamber.
Claim 18
Independent Claim
158 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a chamber in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing air into the exhaust gases in the chamber, flowing exhaust gases from the chamber into a catalytic reactor, flowing exhaust gases from the reactor through a passage, transferring heat from the exhaust gases in the passage to the air flowing into the exhaust gases in the chamber for preheating the air, flowing preheated air into the catalytic reactor, sensing the temperature of the exhaust gases in the chamber by a temperature sensor, interrupting through the medium of the temperature sensor the flow of preheated air into the exhaust gases in the chamber when the gases attain a predetermined high temperature, and delivering a heat-absorbing oxidation-retarding fluid into the exhaust gases in the chamber concomitantly with the interruption of the flow of preheated air into the chamber.
Claim 19
Independent Claim
170 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which limited oxidation of unburned constituents in the exhaust gases is promoted by delivering air from an air pump into the exhaust gases, sensing the temperature of the exhaust gases in the passage by a temperature sensor, establishing a supply of oxidation retarding fluid in a container, interrupting through activation of the temperature sensor the flow of air into the exhaust gases in the passage when the gases attain a predetermined high temperature, and upon interruption of air flow into the exhaust gases, diverting air from the air pump into the container to establish pressure in the container, delivering oxidation-retarding fluid under the influence of the pressure in the container into the exhaust gases in the passage to rapidly reduce the temperature of the gases in the passage, and interrupting delivery of oxidation-retarding fluid when a predetermined quantity of oxidation-retarding fluid is delivered from the container into the gases in the passage.
Claim 20
Independent Claim
170 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage in which limited oxidation of unburned constituents in the exhaust gases is promoted by delivering air from an air pump into the exhaust gases, sensing the temperature of the exhaust gases in the passage by a temperature sensor, establishing a supply of oxidation retarding fluid in a container, interrupting through activation of the temperature sensor the flow of air into the exhaust gases in the passage when the gases attain a predetermined high temperature, and upon interruption of air flow into the exhaust gases, diverting air from the air pump into the container to establish pressure in the container, delivering oxidation-retarding fluid under the influence of the pressure in the container into the exhaust gases in the passage to rapidly reduce the temperature of the gases in the passage, and interrupting delivery of oxidation-retarding fluid when a predetermined quantity of oxidation-retarding fluid is delivered from the container into the gases in the passage.
Claim 21
Independent Claim
172 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine intO a passage in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases in the chamber, providing a supply of oxidation retarding fluid in a receptacle, circulating and recirculating the fluid through channel means in communication with the receptacle, sensing the temperature of the exhaust gases in the passage by a temperature sensor, interrupting through the medium of the temperature sensor the flow of air into the exhaust gases when the gases attain a predetermined high temperature, delivering oxidation-retarding fluid from the receptacle into the passage concomitantly with the interruption of air flow into the exhaust gases to rapidly quench the exhaust gases to reduce the temperature of the exhaust gases, and interrupting delivery of oxidation-retarding fluid into the exhaust gases in the passage when a predetermined amount of oxidation-retarding fluid from the container has been delivered into the exhaust gases in the passage.
Claim 22
Independent Claim
172 words
The method of controlling temperatures of exhaust gases emitted from an internal combustion engine intO a passage in which limited oxidation of unburned constituents in the exhaust gases is promoted by flowing a limited amount of air into the exhaust gases in the chamber, providing a supply of oxidation retarding fluid in a receptacle, circulating and recirculating the fluid through channel means in communication with the receptacle, sensing the temperature of the exhaust gases in the passage by a temperature sensor, interrupting through the medium of the temperature sensor the flow of air into the exhaust gases when the gases attain a predetermined high temperature, delivering oxidation-retarding fluid from the receptacle into the passage concomitantly with the interruption of air flow into the exhaust gases to rapidly quench the exhaust gases to reduce the temperature of the exhaust gases, and interrupting delivery of oxidation-retarding fluid into the exhaust gases in the passage when a predetermined amount of oxidation-retarding fluid from the container has been delivered into the exhaust gases in the passage.
Claim 23
Dependent Claim
86 words
Apparatus for controlling temperature of exhaust gases emitted from an internal combustion engine into passage means in which oxidation is occurring of unburned constituents in the exhaust gases comprising, in combination, a supply of quenching liquid, temperature responsive means associated with the passage means, and means rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to effect delivery of quenching liquid from the supply into the exhaust gases to reduce the temperature of the gases and the passage means.
Claim 24
Dependent Claim
86 words
Apparatus for controlling temperature of exhaust gases emitted from an internal combustion engine into passage means in which oxidation is occurring of unburned constituents in the exhaust gases comprising, in combination, a supply of quenching liquid, temperature responsive means associated with the passage means, and means rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to effect delivery of quenching liquid from the supply into the exhaust gases to reduce the temperature of the gases and the passage means.
Claim 25
Dependent Claim
111 words
An overtemperature control system for exhaust gases emitted from an internal combustion engine into a passage means in which oxidation of unburned constituents in the exhaust gases is promoted by flowing air into the exhaust gases comprising temperature responsive means disposed to be influenced by the temperature of the gases in the chamber means, means providing a supply of oxidation retarding fluid, and valve means rendered effective by the temperature responsive means at a predetermined temperature of the gases in the chamber for reducing flow of air into the gases and establishing flow of the oxidation-retarding fluid from the supply into the gases to reduce the temperature of the passage means.
Claim 26
Dependent Claim
111 words
An overtemperature control system for exhaust gases emitted from an internal combustion engine into a passage means in which oxidation of unburned constituents in the exhaust gases is promoted by flowing air into the exhaust gases comprising temperature responsive means disposed to be influenced by the temperature of the gases in the chamber means, means providing a supply of oxidation retarding fluid, and valve means rendered effective by the temperature responsive means at a predetermined temperature of the gases in the chamber for reducing flow of air into the gases and establishing flow of the oxidation-retarding fluid from the supply into the gases to reduce the temperature of the passage means.
Claim 27
Dependent Claim
15 words
The overtemperature control system according to claim 13 wherein the valve means is solenoid operated.
Claim 28
Dependent Claim
133 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into passage means comprising, in combination, means providing a source of air under pressure, means for conveying air under pressure at a controlled rate from the source into the passage means to promote limited oxidation of unburned constituents in the exhaust gases in the passage means, means establishing a supply of oxidation retarding fluid, temperature responsive means associated with said passage means, and means rendered effective by the temperature responsive means at a predetermined hig temperature of the exhaust gases for interrupting flow of air into the passage means and concomitantly effect the delivery of oxidation retarding fluid from the supply to quench oxidation in the exhaust gases to rapidly reduce the temperature of the gases and the passage means.
Claim 29
Dependent Claim
133 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into passage means comprising, in combination, means providing a source of air under pressure, means for conveying air under pressure at a controlled rate from the source into the passage means to promote limited oxidation of unburned constituents in the exhaust gases in the passage means, means establishing a supply of oxidation retarding fluid, temperature responsive means associated with said passage means, and means rendered effective by the temperature responsive means at a predetermined hig temperature of the exhaust gases for interrupting flow of air into the passage means and concomitantly effect the delivery of oxidation retarding fluid from the supply to quench oxidation in the exhaust gases to rapidly reduce the temperature of the gases and the passage means.
Claim 30
Dependent Claim
47 words
The combination according to claim 15 including conveying means for conveying the exhaust gases from the passage means, and means associated with the conveying means for transferring heat from the gases in the conveying means to the air flowing into the passage means to preheat the air.
Claim 31
Dependent Claim
20 words
The combination according to claim 15 wherein the means rendered effective by the temperature responsive means is a solenoid-operated valve.
Claim 32
Dependent Claim
189 words
An overtemperature control system for exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, means establishing a source of air under pressure, means for delivering air from the source at a limited rate into the passage means to promote limited oxidation of unburned constituents in the exhaust gases in the passage means, a catalytic reactor arranged to receive exhaust gases from the passage means, tubular means connected with the catalytic reactor for conveying exhaust gases away from the catalytic reactor, valve means, temperature responsive means associated with the passage means, means associated with the exhaust gas conveying means for preheating air flowing into the passage means, a receptacle containing a supply of oxidation retarding fluid, said valve means being rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to interrupt the flow of air to the passage means and concomitantly effect delivery of oxidation retarding fluid from the supply into the exhaust gases in the passage means to quench the gases and thereby reduce the temperature of the gases and the temperature of the passage means.
Claim 33
Dependent Claim
189 words
An overtemperature control system for exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, means establishing a source of air under pressure, means for delivering air from the source at a limited rate into the passage means to promote limited oxidation of unburned constituents in the exhaust gases in the passage means, a catalytic reactor arranged to receive exhaust gases from the passage means, tubular means connected with the catalytic reactor for conveying exhaust gases away from the catalytic reactor, valve means, temperature responsive means associated with the passage means, means associated with the exhaust gas conveying means for preheating air flowing into the passage means, a receptacle containing a supply of oxidation retarding fluid, said valve means being rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to interrupt the flow of air to the passage means and concomitantly effect delivery of oxidation retarding fluid from the supply into the exhaust gases in the passage means to quench the gases and thereby reduce the temperature of the gases and the temperature of the passage means.
Claim 34
Dependent Claim
18 words
An overtemperature control system according to claim 18 including means for conveying preheated air into the catalytic reactor.
Claim 35
Dependent Claim
212 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold chamber including, in combination, means providing air under pressure, means for delivering the air under pressure at a controlled rate into the manifold chamber to promote limited oxidation of unburned constituents in the exhaust gases in the manifold chamber, a catalytic reactor arranged to receive exhaust gases from the manifold chamber, tubular means connected with the catalytic reactor for conveying exhaust gases away from the catalytic reactor, means associated with the tubular exhaust gas conveying means for transferring heat from the exhaust gases in said tubular means to increase the temperature of the air delivered into the manifold chamber, solenoid-operated valve means, temperature responsive means associated with the manifold chamber, a receptacle containing a supply of quenching fluid, and means rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to energize the solenoid-operated valve means to a position interrupting the flow of preheated air to the manifold chamber, said solenoid-operated valve means in its energized position delivering quenching fluid from the supply into the exhaust gases in the manifold chamber to quench the gases and thereby reduce the temperature of the gases and the temperature of the manifold chamber.
Claim 36
Dependent Claim
212 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a manifold chamber including, in combination, means providing air under pressure, means for delivering the air under pressure at a controlled rate into the manifold chamber to promote limited oxidation of unburned constituents in the exhaust gases in the manifold chamber, a catalytic reactor arranged to receive exhaust gases from the manifold chamber, tubular means connected with the catalytic reactor for conveying exhaust gases away from the catalytic reactor, means associated with the tubular exhaust gas conveying means for transferring heat from the exhaust gases in said tubular means to increase the temperature of the air delivered into the manifold chamber, solenoid-operated valve means, temperature responsive means associated with the manifold chamber, a receptacle containing a supply of quenching fluid, and means rendered effective by the temperature responsive means at a predetermined high temperature of the exhaust gases to energize the solenoid-operated valve means to a position interrupting the flow of preheated air to the manifold chamber, said solenoid-operated valve means in its energized position delivering quenching fluid from the supply into the exhaust gases in the manifold chamber to quench the gases and thereby reduce the temperature of the gases and the temperature of the manifold chamber.
Claim 37
Dependent Claim
27 words
The apparatus according to claim 20 including means for conveying preheated air into the catalytic reactor for oxidizing oxidizable constituents in the exhaust gases in the reactor.
Claim 38
Dependent Claim
23 words
The combination according to claim 20 wherein the catalytic reactor embodies a chemical reduction bed for converting oxides of nitrogen to nontoxic gases.
Claim 39
Dependent Claim
39 words
The combination according to claim 20 including means rendered effective by the temperature responsive means under the influence of the reduced temperature of the gases to de-energize the solenoid-operated valve means restoring the valve means to its initial position.
Claim 40
Dependent Claim
285 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, a first pump for pumping air, means for conveying from the pump a limited amount of air into the exhaust gases in the passage means to promote limited oxidation of unburned constituents in the exhaust gases, receptacle means containing a supply of quenching fluid, a second pump adapted to circulate and recirculate the fluid through fluid conveying means in communication with the receptacle means, a first solenoid-operated valve means for controlling the flow of air into the exhaust gases, means associated with the second pump adapted to convey the quenching fluid under high temperature conditions into the exhaust gases in the passage means, a second solenoid-operated valve means for controlling flow of quenching flUid into the exhaust gases in the passage means, a timer associated with the second solenoid-operated valve means, temperature responsive means associated with the passage means, means rendered effective by the temperature responsive means at a predetermined high temperature to energize the first solenoid-operated valve means to interrupt flow of air into the exhaust gases in the passage means and to energize through the timer the second solenoid-operated valve means to a position effecting delivery of quenching fluid from the supply into the exhaust gases in the passage means to rapidly quench the exhaust gases to reduce the temperature of the exhaust gases and the temperature of the passage means, said timer being set to time out and de-energize the second solenoid-operated valve means when a predetermined amount of quenching fluid has been delivered from the receptacle means into the exhaust gases in the passage means to interrupt delivery of quenching fluid.
Claim 41
Dependent Claim
285 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, a first pump for pumping air, means for conveying from the pump a limited amount of air into the exhaust gases in the passage means to promote limited oxidation of unburned constituents in the exhaust gases, receptacle means containing a supply of quenching fluid, a second pump adapted to circulate and recirculate the fluid through fluid conveying means in communication with the receptacle means, a first solenoid-operated valve means for controlling the flow of air into the exhaust gases, means associated with the second pump adapted to convey the quenching fluid under high temperature conditions into the exhaust gases in the passage means, a second solenoid-operated valve means for controlling flow of quenching flUid into the exhaust gases in the passage means, a timer associated with the second solenoid-operated valve means, temperature responsive means associated with the passage means, means rendered effective by the temperature responsive means at a predetermined high temperature to energize the first solenoid-operated valve means to interrupt flow of air into the exhaust gases in the passage means and to energize through the timer the second solenoid-operated valve means to a position effecting delivery of quenching fluid from the supply into the exhaust gases in the passage means to rapidly quench the exhaust gases to reduce the temperature of the exhaust gases and the temperature of the passage means, said timer being set to time out and de-energize the second solenoid-operated valve means when a predetermined amount of quenching fluid has been delivered from the receptacle means into the exhaust gases in the passage means to interrupt delivery of quenching fluid.
Claim 42
Dependent Claim
245 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, an air pump, means for conveying a limited amount of air from the air pump into the exhaust gases to promote limited oxidation of oxidizable constituents in the exhaust gases, a receptacle adapted to contain a quenching fluid, means establishing communication between the receptacle and the passage means, a solenoid-operated valve means associated with the means for conveying air into the passage means, tubular means establishing communication of the receptacle with the solenoid-operated valve means, said solenoid-operated valve means being normally in a position to convey air from the pump into the passage means, temperature responsive means associated with the passage means, said temperature responsive means being effective when the gases in the passage means attain a predetermined temperature to energize the solenoid-operated valve means to a position interrupting flow of air into the passage means and to establish communication of the air pump through the tubular means with the receptacle whereby air from the pump is directed into the receptacle to effect rapid delivery of the quenching fluid into the passage means to quench the exhaust gases in the passage means and thereby reduce the temperature of the exhaust gases and the temperature of the passage means, and means associated with the receptacle operable upon the delivery from the receptacle of a predetermined amount of quenching fluid to interrupt delivery of the quenching fluid.
Claim 43
Dependent Claim
245 words
Apparatus for controlling temperatures of exhaust gases emitted from an internal combustion engine into a passage means comprising, in combination, an air pump, means for conveying a limited amount of air from the air pump into the exhaust gases to promote limited oxidation of oxidizable constituents in the exhaust gases, a receptacle adapted to contain a quenching fluid, means establishing communication between the receptacle and the passage means, a solenoid-operated valve means associated with the means for conveying air into the passage means, tubular means establishing communication of the receptacle with the solenoid-operated valve means, said solenoid-operated valve means being normally in a position to convey air from the pump into the passage means, temperature responsive means associated with the passage means, said temperature responsive means being effective when the gases in the passage means attain a predetermined temperature to energize the solenoid-operated valve means to a position interrupting flow of air into the passage means and to establish communication of the air pump through the tubular means with the receptacle whereby air from the pump is directed into the receptacle to effect rapid delivery of the quenching fluid into the passage means to quench the exhaust gases in the passage means and thereby reduce the temperature of the exhaust gases and the temperature of the passage means, and means associated with the receptacle operable upon the delivery from the receptacle of a predetermined amount of quenching fluid to interrupt delivery of the quenching fluid.
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |