EP0376714A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Control system for internal combustion engine
Assignee: Isuzu Motors Ltd
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Filing: 1989-12-28
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Granted: —
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Expires: 2009-12-28
Abstract
Abstract A control system for controlling an internal combustion engine (1) having intake (2) and exhaust valves and a supply unit (11) for supplying fuel to an intake port includes electromagnetic actuator means (22,24,25) for selectively opening and closing the intake and exhaust valves. The timing and extent of opening of the intake and exhaust valves and the timing and amount of fuel to be injected, are calculated based on engine load conditions and drive/control signals are applied to the electromagnetic actuator means (22,24,25) and the fuel supply unit (11) based on the respective calculations. in order to control the ratio of the air-fuel mixture introduced into the intake port.
Inventors
- 👤 Hideo Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 12:35
CPC Classifications
F; F02; F02D; F02D13/00; F02D13/02; F02D13/0203; F02D13/0207; F02D13/0211; F01; F01L; F01L9/00; F01L9/20; F02D13/0253; F02D41/00; F02D41/30; F02D41/32; F02D41/34; F02D41/345; F02M; F02M69/00; F02M69/04; F02M69/042; F02M69/044; F01L2201/00; F02B; F02B1/00; F02B1/02; F02B1/04; F02D41/0002; F02D2041/001; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A control system for controlling an internal combustion engine (1) having intake (2) and exhaust valves and a supply unit (11) for supplying fuel to an intake port which is openable and closable by the intake valve, the control system comprising: electromagnetic actuator means (22,24,25) for selectively opening and closing the intake and exhaust valves; a fuel injection nozzle (12) for injecting fuel from the fuel supply unit into the intake port; an engine load sensor (41) for detecting the load on the engine; a crankshaft angle sensor (13) for detecting the angular position of the crankshaft of the engine; calculating means (5), for calculating the timing and extent of opening of the intake and exhaust valves and the timing and amount of fuel to be injected, based on signals from the engine load sensor (41) and the crankshaft angle sensor (13); and control means (5) for applying drive signals to the electromagnetic actuator means (22,24,25) and a control signal to the fuel supply unit (11), based on the respective calculations of the calculating means.
Claim 2
Dependent Claim
175 words
A control system for controlling an internal combustion engine (1) having intake (2) and exhaust valves and a supply unit (11) for supplying fuel to an intake port which is openable and closable by the intake valve, the control system comprising: electromagnetic actuator means (22,24,25) for selectively opening and closing the intake and exhaust valves; a fuel injection nozzle (12) for injecting fuel from the fuel supply unit into the intake port; an engine load sensor (41) for detecting the load on the engine; a crankshaft angle sensor (13) for detecting the angular position of the crankshaft of the engine; calculating means (5), for calculating the timing and extent of opening of the intake and exhaust valves and the timing and amount of fuel to be injected, based on signals from the engine load sensor (41) and the crankshaft angle sensor (13); and control means (5) for applying drive signals to the electromagnetic actuator means (22,24,25) and a control signal to the fuel supply unit (11), based on the respective calculations of the calculating means.
Claim 3
Dependent Claim
28 words
A control system according to claim 1, wherein the fuel injection nozzle (12) is oriented to direct fuel onto a valve head (21) of the intake valve (2).
Claim 4
Dependent Claim
66 words
A control system according to claim 1 or claim 2, further including means (51) for detecting the amount of air flowing through the intake port, and wherein the calculating means (5) is arranged to correct the calculated amount of fuel to be injected so that the amount of fuel injected and the amount of air flowing through the intake port are at a stoichiometric air-fuel ratio.
Claim 5
Dependent Claim
17 words
An internal combustion engine having a control system according to claim 1, claim 2 or claim 3.
Claim 6
Dependent Claim
20 words
An engine according to claim 4, wherein each of the intake and exhaust valves is made of a ceramic material.
References Cited (Backward Citations)
No citation records indexed.
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