US6092502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct injection engine controller
Assignee: Hitachi Ltd
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Filing: 1998-12-02
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Granted: 2000-07-25
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Expires: 2018-12-02
Abstract
Abstract A controller of a direct injection engine is basically provided with a swirl control valve arranged in an air intake port portion, a fuel injection valve and a variable fuel pressure regulator, further provided with means for controlling fuel pressure by the variable fuel pressure regulator, means for detecting operational conditions and means for detecting a combustion state, and still further provided with means for controlling a valve opening of the swirl control valve on the basis of the operational conditions and the combustion state.
Inventors
- 👤 Takeshi Atago
- 👤 Kousaku Shimada
- 👤 Katsuo Saitoh
- 👤 Shunichi Mitsuishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:29
CPC Classifications
F; F02; F02B; F02B31/00; F02B31/04; F02B31/06; F02D; F02D41/00; F02D41/0002; F02D41/008; F02B75/00; F02B75/12; F02B2075/125; F02B2275/00; F02B2275/18; F02D2041/0015; F02D41/30; F02D41/38; F02D2041/389; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
59 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of at least one factor representative of combustion state is a combustion stability being in a target region.
Claim 2
Dependent Claim
59 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of at least one factor representative of combustion state is a combustion stability being in a target region.
Claim 3
Dependent Claim
39 words
A controller of a direct injection engine according to claim 1, wherein a basic opening position of said swirl control valve is controlled on the basis of the number of revolutions and a target torque of said operational conditions.
Claim 4
Dependent Claim
49 words
A controller of a direct injection engine according to claim 1, wherein a valve opening position of said swirl control valve is controlled to correct so as to open not to reduce engine power when at least one of actuators or a control system of said engine is abnormal.
Claim 5
Dependent Claim
74 words
A controller of a direct injection engine according to claim 3, wherein when a valve opening position of said swirl control valve is controlled to correct so as to open not to reduce engine power when at least one of actuators or a control system of said engine is abnormal, the valve opening position is restricted so that an increment rate of engine output per time does not become more than a predetermined value.
Claim 6
Dependent Claim
51 words
A controller of a direct injection engine according to claim 1, wherein said at least one of factors indicative of combustion state is combustion stability, and wherein the factor indicative of said combustion stability is detected and said swirl control valve is controlled on the basis of the detected combustion stability.
Claim 7
Dependent Claim
47 words
A controller of a direct injection engine according to claim 1, wherein an opening position of said swirl control valve is controlled to a valve opening position set for each combustion state on the basis of an air fuel ratio set as a target of said engine.
Claim 8
Dependent Claim
45 words
A controller of a direct injection engine according to claim 1, wherein a valve opening position of said swirl control valve is controlled to correct so as to be stable in engine combustion by a factor indicative of the stability of combustion in said engine.
Claim 9
Dependent Claim
80 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, a fuel injection valve and a variable fuel pressure regulator, said controller further comprising: means for controlling the pressure of fuel by said variable fuel pressure regulator; means for detecting operational conditions; means for detecting a combustion state; and means for controlling an opening of said swirl control valve on the basis of the operational condition and the combustion state.
Claim 10
Dependent Claim
80 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, a fuel injection valve and a variable fuel pressure regulator, said controller further comprising: means for controlling the pressure of fuel by said variable fuel pressure regulator; means for detecting operational conditions; means for detecting a combustion state; and means for controlling an opening of said swirl control valve on the basis of the operational condition and the combustion state.
Claim 11
Dependent Claim
33 words
A controller of a direct injection engine according to claim 8, wherein a fuel pressure of said variable fuel pressure regulator is controlled based on a factor indicative of the stability of combustion.
Claim 12
Dependent Claim
39 words
A controller of a direct injection engine according to claim 8, wherein a basic opening position of said swirl control valve is controlled on the basis of the number of revolutions and a target torque of said operational conditions.
Claim 13
Dependent Claim
47 words
A controller of a direct injection engine according to claim 8, wherein an opening position of said swirl control valve is controlled to a valve opening position set for each combustion state on the basis of an air fuel ratio set as a target of said engine.
Claim 14
Dependent Claim
45 words
A controller of a direct injection engine according to claim 8, wherein a valve opening position of said swirl control valve is controlled to correct so as to be stable in engine combustion by a factor indicative of the stability of combustion in said engine.
Claim 15
Dependent Claim
39 words
A controller of a direct injection engine according to claim 12, wherein a basic opening position of said swirl control valve is controlled on the basis of the number of revolutions and a target torque of said operational conditions.
Claim 16
Dependent Claim
37 words
A controller of a direct injection engine according to claim 8, wherein a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 17
Dependent Claim
37 words
A controller of a direct injection engine according to claim 6, wherein a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 18
Dependent Claim
80 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct infection engine and a combustion state, wherein a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 19
Dependent Claim
80 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct infection engine and a combustion state, wherein a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 20
Dependent Claim
108 words
A controller of a direct injection engine, provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct injection engine and a combustion state, wherein a basic opening position of said swirl control valve is controlled on the basis of the number of revolutions and a target torque of said operational conditions, and a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 21
Dependent Claim
108 words
A controller of a direct injection engine, provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct injection engine and a combustion state, wherein a basic opening position of said swirl control valve is controlled on the basis of the number of revolutions and a target torque of said operational conditions, and a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 22
Dependent Claim
114 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct injection engine and a combustion state, wherein a valve opening position of said swirl control valve is controlled to correct so as to be stable in engine combustion by a factor indicative of the stability of combustion in said engine and a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 23
Dependent Claim
114 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein said swirl control valve is constructed so that an opening of said swirl control valve is controllable on the basis of an operational condition of said direct injection engine and a combustion state, wherein a valve opening position of said swirl control valve is controlled to correct so as to be stable in engine combustion by a factor indicative of the stability of combustion in said engine and a valve opening position of said swirl control valve is controlled to correct on the basis of operational fuel pressure of a fuel injection valve.
Claim 24
Dependent Claim
53 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein means is provided for detecting a factor indicative of combustion state and for controlling said swirl control valve on the basis of the detected result of said factor indicative of combustion state.
Claim 25
Dependent Claim
53 words
A controller of a direct injection engine provided with a swirl control valve arranged in an air intake port portion, wherein means is provided for detecting a factor indicative of combustion state and for controlling said swirl control valve on the basis of the detected result of said factor indicative of combustion state.
Claim 26
Dependent Claim
43 words
A controller of a direct injection engine according to claim 19, wherein said factor indicative of combustion sate is combustion stability, and wherein aid means detects said combustion stability and controls said swirl control valve on the basis of the detected combustion stability.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |