Patent US6748934B2 successfully refreshed from Google Patents.
US6748934B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine charge air conditioning system with multiple intercoolers
Assignee: Ford Global Technologies LLC
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Filing: 2003-01-30
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Granted: 2004-06-15
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Expires: 2023-01-30
Abstract
Abstract An automotive engine has a charge air conditioning system, including a charge booster, and a first intercooler for transferring heat from charge air flowing from the booster. The first intercooler transfers heat from the charge air to ambient air, and a second intercooler downstream from the first intercooler further reduces the heat content of the charge air by transferring heat from the charge air to a refrigerated fluid. An engine control module controls the engine's spark timing and fuel charge as a function of at least the amount of air charge cooling provided by the second intercooler. The present engine is particularly well adapted to operate on gaseous hydrogen fuel.
Inventors
- 👤 Robert Jay Natkin
- 👤 August Thomas Vaught
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:50
CPC Classifications
F; F25; F25B; F25B25/00; F25B25/005; F01; F01P; F01P9/00; F01P9/06; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0412; F02B29/0425; F02B29/0437; F02B29/0443; F02B29/0493; F25B5/00; F25B5/02; F25B9/00; F25B9/002; F01P2060/00; F01P2060/02; F25B2600/00; F25B2600/25; F25B2600/2511; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
A spark-ignited internal combustion engine having a charge air conditioning system, with said conditioning system comprising: a charge booster; a first intercooler for transferring heat from charge air flowing from the booster to ambient air; a second intercooler, downstream from the first intercooler, for transferring heat from the charge air to a refrigerant fluid provided by a refrigeration system powered by the engine; and a controller for controlling the flow of refrigerant fluid to the second intercooler, with the controller also controlling the engine's fuel charge and spark timing as a function of at least the rate of flow of the refrigerant fluid.
Claim 2
Dependent Claim
103 words
A spark-ignited internal combustion engine having a charge air conditioning system, with said conditioning system comprising: a charge booster; a first intercooler for transferring heat from charge air flowing from the booster to ambient air; a second intercooler, downstream from the first intercooler, for transferring heat from the charge air to a refrigerant fluid provided by a refrigeration system powered by the engine; and a controller for controlling the flow of refrigerant fluid to the second intercooler, with the controller also controlling the engine's fuel charge and spark timing as a function of at least the rate of flow of the refrigerant fluid.
Claim 3
Dependent Claim
19 words
The charge air conditioning system according to claim 1 , wherein said charge booster comprises an engine driven supercharger.
Claim 4
Dependent Claim
24 words
The charge air conditioning system according to claim 1 , wherein said charge booster comprises a turbocharger driven by exhaust gases from the engine.
Claim 5
Dependent Claim
35 words
The charge air conditioning system according to claim 1 , wherein said second intercooler transfers heat from the charge air to a liquid which has been cooled by a refrigeration system powered by the engine.
Claim 6
Dependent Claim
48 words
The charge air conditioning system according to claim 1 , wherein said second intercooler transfers heat from the charge air to a refrigerant flowing through the second intercooler, so as to change the state of at least a portion of the refrigerant from a liquid to a gas.
Claim 7
Dependent Claim
29 words
The charge air conditioning system according to claim 5 , wherein said second intercooler receives liquid refrigerant from a refrigeration system which cools a passenger compartment of a vehicle.
Claim 8
Dependent Claim
16 words
The charge air conditioning system according to claim 6 , wherein said refrigerant comprises compound R134a.
Claim 9
Dependent Claim
32 words
The charge air conditioning system according to claim 1 , wherein said second intercooler transfers heat from the charge air to a liquid which has been cooled by an air-to-liquid heat exchanger.
Claim 10
Dependent Claim
50 words
The charge air conditioning system according to claim 1 , wherein said controller monitors the position of an accelerator pedal and controls the flow of refrigerant fluid so as to provide refrigerant fluid to the second intercooler in the event that the accelerator pedal is in a closed throttle position.
Claim 11
Dependent Claim
68 words
The charge air conditioning system according to claim 1 , wherein said controller receives signals from a plurality of engine operating parameter sensors, including at least an accelerator position signal, with said controller filtering said accelerator position signal and controlling the flow of refrigerant fluid so as to provide refrigerant fluid to the second intercooler in the event that the filtered accelerator position signal exceeds a predetermined threshold.
Claim 12
Dependent Claim
44 words
The charge air conditioning system according to claim 1 , wherein said engine has a plurality of power cylinders, with each of said cylinders having a smaller capacity fuel injector and a larger capacity injector, with said injectors each being operated by said controller.
Claim 13
Dependent Claim
18 words
The spark-ignited internal combustion engine according to claim 1 , wherein said engine is fueled with gaseous hydrogen.
Claim 14
Independent Claim
91 words
A method for conditioning charge air for an automotive spark-ignited internal combustion engine, comprising the steps of: compressing the air with a charge booster; removing heat from the compressed charge air by means of a charge air-to-ambient air heat exchanger; removing additional heat from the charge air by means of a charge air-to-liquid heat exchanger furnished with a flow of liquid refrigerant; and controlling the engine's spark timing and fuel charge as a function of at least the amount of heat removed from the air charge by the air-to-liquid heat exchanger.
Claim 15
Independent Claim
91 words
A method for conditioning charge air for an automotive spark-ignited internal combustion engine, comprising the steps of: compressing the air with a charge booster; removing heat from the compressed charge air by means of a charge air-to-ambient air heat exchanger; removing additional heat from the charge air by means of a charge air-to-liquid heat exchanger furnished with a flow of liquid refrigerant; and controlling the engine's spark timing and fuel charge as a function of at least the amount of heat removed from the air charge by the air-to-liquid heat exchanger.
Claim 16
Dependent Claim
29 words
The method according to claim 13 , wherein said charge air-to liquid heat exchanger is furnished with liquid refrigerant which changes phase while absorbing heat from the charge air.
Claim 17
Dependent Claim
36 words
The method for according to claim 13 , further comprising the step of controlling the flow of refrigerant liquid furnished to the charge air-to-liquid heat exchanger as a function of at least an accelerator position signal.
Claim 18
Dependent Claim
17 words
The method according to claim 15 , wherein said accelerator position signal comprises a digitally filtered signal.
Claim 19
Dependent Claim
111 words
A spark-ignited reciprocating internal combustion engine having a charge air conditioning system, with said conditioning system comprising: a charge booster; a first intercooler for transferring heat from charge air flowing from the booster to ambient air; a second intercooler, downstream from the first intercooler, for transferring heat from the charge air to a refrigerant fluid provided by a refrigeration system powered by the engine; and a controller for controlling the flow of refrigerant fluid to the second intercooler as a function of at least an accelerator position signal, and controlling the engine's fuel charge and spark timing as a function of at least the rate of flow of the refrigerant fluid.
Claim 20
Dependent Claim
111 words
A spark-ignited reciprocating internal combustion engine having a charge air conditioning system, with said conditioning system comprising: a charge booster; a first intercooler for transferring heat from charge air flowing from the booster to ambient air; a second intercooler, downstream from the first intercooler, for transferring heat from the charge air to a refrigerant fluid provided by a refrigeration system powered by the engine; and a controller for controlling the flow of refrigerant fluid to the second intercooler as a function of at least an accelerator position signal, and controlling the engine's fuel charge and spark timing as a function of at least the rate of flow of the refrigerant fluid.
Claim 21
Dependent Claim
31 words
The spark-ignited reciprocating internal combustion engine according to claim 17 , wherein said controller controls the flow of refrigerant fluid to the second intercooler as a further function of engine speed.
Claim 22
Dependent Claim
26 words
The spark-ignited reciprocating internal combustion engine according to claim 17 , further comprising a plurality of fuel injectors for providing gaseous hydrogen fuel to the engine.
Claim 23
Dependent Claim
26 words
The spark-ignited reciprocating internal combustion engine according to claim 19 , wherein at least two hydrogen fuel injectors are employed for each cylinder of the engine.
References Cited (Backward Citations)
DE2301666A1
Cited
US4010613A
Cited
US4236492A
Cited
US4237689A
Cited
US4317439A
Cited
JPS6093118A
Cited
US4683725A
Cited
JPS6165017A
Cited
US4936262A
Cited
JPS62279228A
Cited
JPS6375312A
Cited
US4918923A
Cited
US5081977A
Cited
US5036668A
Cited
US5394854A
Cited
US5144812A
Cited
US5305714A
Cited
US5492103A
Cited
US5435289A
Cited
US5269143A
Cited
US5809981A
Cited
US5415147A
Cited
US5598705A
Cited
EP0750106A1
Cited
US5669338A
Cited
US5875633A
Cited
US6006540A
Cited
US6347618B1
Cited
US6381973B1
Cited
US6510690B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-06-15 | 2007-12-15 | 2008-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-15 | 2011-12-15 | 2012-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-15 | 2015-12-15 | 2016-06-15 | $7700.00 | Window Closed / Lapsed |