US7007473B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control device of evaporator
Assignee: Honda Motor Co Ltd
•
Filing: 2002-09-20
•
Granted: 2006-03-07
•
Expires: 2022-09-20
Abstract
Abstract Evaporator temperature control means (U) that, in order to make the temperature of steam generated by heating water using exhaust gas of an engine coincide with a target temperature, controls the amount of water supplied to the evaporator based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the water, and the temperature of the steam. Calculating an exhaust gas flow rate (Gmix) based on a fuel injection quantity, an air/fuel ratio, and a rotational speed of the engine improves the precision and the responsiveness of the calculation. Controlling the amount of water supplied to the evaporator based on this exhaust gas flow rate (Gmix) therefore improves the accuracy with which the steam temperature is controlled so as to make it coincide with the target temperature.
Inventors
- 👤 Shuji Nagatani
- 👤 Tsuyoshi Baba
- 👤 Shigeru Ibaraki
- 👤 Akihisa Sato
- 👤 Susumu Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:29
CPC Classifications
F; F01; F01N; F01N5/00; F01N5/02; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/065; F01K23/10; F01K23/101; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: fuel injection quantity detection means (S 5 ) for detecting a fuel injection quantity of the engine (E); air/fuel ratio detection means (S 6 ) for detecting an air/fuel ratio of the engine (E); and rotational speed detection means (S 7 ) for detecting a rotational speed of the engine (E); the exhaust gas flow rate being determined by calculation based on the fuel injection quantity, the air/fuel ratio, and the rotational speed.
Claim 2
Dependent Claim
150 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: fuel injection quantity detection means (S 5 ) for detecting a fuel injection quantity of the engine (E); air/fuel ratio detection means (S 6 ) for detecting an air/fuel ratio of the engine (E); and rotational speed detection means (S 7 ) for detecting a rotational speed of the engine (E); the exhaust gas flow rate being determined by calculation based on the fuel injection quantity, the air/fuel ratio, and the rotational speed.
Claim 3
Dependent Claim
56 words
The evaporator temperature control system according to claim 1 , wherein the fuel injection quantity detection means (S 5 ), the air/fuel ratio detection means (S 6 ), and the rotational speed detection means (S 7 ) are connected to steam temperature control means U for controlling a water supply regulation actuator of a Rankine engine.
Claim 4
Dependent Claim
18 words
The evaporator temperature control system according to claim 1 , wherein the engine E is a gasoline engine.
Claim 5
Dependent Claim
19 words
The evaporator temperature control system according to claim 1 , wherein the engine E is a common-rail diesel engine.
Claim 6
Dependent Claim
24 words
The evaporator temperature control system according to claim 1 , wherein the liquid-phase working medium is water, and the gas-phase working medium is steam.
Claim 7
Dependent Claim
28 words
The evaporator temperature control system according to claim 1 , wherein the liquid-phase working medium is other than water, and the gas-phase working medium is other than steam.
Claim 8
Dependent Claim
134 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: fuel injection quantity detection means (S 5 ) for detecting a fuel injection quantity of the engine (E); and intake air volume detection means (S 8 ) for detecting an intake air volume of the engine (E); the exhaust gas flow rate being determined by calculation based on the fuel injection quantity and the intake air volume.
Claim 9
Dependent Claim
134 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: fuel injection quantity detection means (S 5 ) for detecting a fuel injection quantity of the engine (E); and intake air volume detection means (S 8 ) for detecting an intake air volume of the engine (E); the exhaust gas flow rate being determined by calculation based on the fuel injection quantity and the intake air volume.
Claim 10
Dependent Claim
131 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: intake air volume detection means (S 8 ) for detecting an intake air volume of the engine (E); and air/fuel ratio detection means (S 6 ) for detecting an air/fuel ratio of the engine (E); the exhaust gas flow rate being determined by calculation based on the intake air volume and the air/fuel ratio.
Claim 11
Dependent Claim
131 words
An evaporator temperature control system that, in order to make the temperature of a gas-phase working medium generated by heating a liquid-phase working medium using exhaust gas of an engine (E) coincide with a target temperature, controls the supply of the liquid-phase working medium based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the liquid-phase working medium, and the temperature of the gas-phase working medium, the system comprising: intake air volume detection means (S 8 ) for detecting an intake air volume of the engine (E); and air/fuel ratio detection means (S 6 ) for detecting an air/fuel ratio of the engine (E); the exhaust gas flow rate being determined by calculation based on the intake air volume and the air/fuel ratio.
References Cited (Backward Citations)
JPS6064101A
Cited
US4586338A
Cited
JPH0238161A
Cited
JPH0238162A
Cited
US5896746A
Cited
JP2002115801A
Cited
US6810668B2
Cited
US6845618B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-03-06 | 2009-09-05 | 2010-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-03-06 | 2013-09-05 | 2014-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-03-06 | 2017-09-05 | 2018-03-07 | $7700.00 | Window Closed / Lapsed |