Patent EP0239095A2 successfully refreshed from Google Patents.
EP0239095A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A control system and method for internal combustion engines
Assignee: Hitachi Ltd
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Filing: 1987-03-25
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Granted: —
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Expires: 2007-03-25
Abstract
Abstract in a control system and method for an internal combustion engine, in which the amount of fuel is determined on the basis of the depression amount of an accelerator pedal (113) and the amount of air is determined on the basis of the fuel amount, the changing amounts of the fuel and air are corrected by the changing rate of the accelerator pedal depression amount.
Inventors
- 👤 Yutaka Nishimura
- 👤 Yoshishige Oyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/045; F02D43/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
234 words
A control system for an internal combustion engine, comprising: (a) accelerator pedal depression amount detecting means (113) for detecting the depression amount of an accelerator pedal; (b) number-of-revolution detection means (111) for detecting the number of revolutions of the engine; (c) air/fuel ratio detecting means (124) disposed in an exhaust pipe (110) for detecting an air/fuel ratio of fuel mixture from engine exhaust gas; (d) accelerator pedal depression changing rate detecting means (112) for obtaining the changing rate of the depression amount of the accelerator pedal; (e) fuel injection amount determining means (112) for determining the basic amount of fuel injection on the basis of the detected signal of said accelerator pedal depression changing rate detecting means; (f) fuel injection amount correcting means (112) for correcting the basic amount of fuel injection, which is determined by said fuel injection amount determining means, on the basis of the detected signal of said air/ fuel ratio detecting means; (g) throttle valve opening determining means (145) for determining the opening of a throttle valve (116) on the basis of the value of said fuel injection amount correcting means; (h) fuel injection means (109, 117) for injecting fuel on the basis of the value of said fuel injection amount correcting means; and (i) throttle valve control means (114) for controlling the throttle valve opening on the basis of an output signal of said throttle valve opening determining means.
Claim 2
Dependent Claim
234 words
A control system for an internal combustion engine, comprising: (a) accelerator pedal depression amount detecting means (113) for detecting the depression amount of an accelerator pedal; (b) number-of-revolution detection means (111) for detecting the number of revolutions of the engine; (c) air/fuel ratio detecting means (124) disposed in an exhaust pipe (110) for detecting an air/fuel ratio of fuel mixture from engine exhaust gas; (d) accelerator pedal depression changing rate detecting means (112) for obtaining the changing rate of the depression amount of the accelerator pedal; (e) fuel injection amount determining means (112) for determining the basic amount of fuel injection on the basis of the detected signal of said accelerator pedal depression changing rate detecting means; (f) fuel injection amount correcting means (112) for correcting the basic amount of fuel injection, which is determined by said fuel injection amount determining means, on the basis of the detected signal of said air/ fuel ratio detecting means; (g) throttle valve opening determining means (145) for determining the opening of a throttle valve (116) on the basis of the value of said fuel injection amount correcting means; (h) fuel injection means (109, 117) for injecting fuel on the basis of the value of said fuel injection amount correcting means; and (i) throttle valve control means (114) for controlling the throttle valve opening on the basis of an output signal of said throttle valve opening determining means.
Claim 3
Dependent Claim
29 words
A control system according to claim 1, further comprising transmission position detecting means for correcting an output signal of said accelerator pedal depression changing rate detecting means (Fig. 8).
Claim 4
Dependent Claim
43 words
A control system according to claim 1, wherein said fuel injection amount correcting means (112) further corrects the basic fuel injection amount in accordance with a correction coefficient which is determined by the engine number of revolutions and the basic fuel injection amount.
Claim 5
Dependent Claim
31 words
A control system according to claim 1, further comprising ignition timing determining means for determining an ignition timing on the basis of the value from said fuel injection amount correcting means.
Claim 6
Dependent Claim
177 words
A control method for an internal combustion engine, comprising following steps: (a) detecting the depression amount of an accelerator pedal; (b) detecting the number of revolutions of the engine; (c) detecting an air/fuel ratio of fuel mixture from engine exhaust gas; (d) determining the basic amount of fuel injection on the basis of the detected signal of said accelerator pedal depression amount detecting means; (e) detecting whether or not the detected signal of said air/fuel ratio detecting means is within a range of the air fuel ratio of 15 to 18; (f) determining the opening of a throttle valve on the basis of the output of said fuel injection amount determining means and for operating the throttle valve so that the throttle valve may be closed in response to the detected signal of said NO x emission air/fuel ratio detecting means; (g) injecting fuel on the basis of the value from said fuel injection amount determining means; and (h) controlling the throttle valve opening on the basis of the value from said throttle valve opening determining means.
Claim 7
Dependent Claim
177 words
A control method for an internal combustion engine, comprising following steps: (a) detecting the depression amount of an accelerator pedal; (b) detecting the number of revolutions of the engine; (c) detecting an air/fuel ratio of fuel mixture from engine exhaust gas; (d) determining the basic amount of fuel injection on the basis of the detected signal of said accelerator pedal depression amount detecting means; (e) detecting whether or not the detected signal of said air/fuel ratio detecting means is within a range of the air fuel ratio of 15 to 18; (f) determining the opening of a throttle valve on the basis of the output of said fuel injection amount determining means and for operating the throttle valve so that the throttle valve may be closed in response to the detected signal of said NO x emission air/fuel ratio detecting means; (g) injecting fuel on the basis of the value from said fuel injection amount determining means; and (h) controlling the throttle valve opening on the basis of the value from said throttle valve opening determining means.
Claim 8
Dependent Claim
56 words
A control method according to claim 5, further comprising the steps of detecting the pressure of suction air; discriminating whether or not the suction air pressure is at a set level; and correcting the opening signal of said throttle valve opening determining means on the basis of the value of said suction air pressure discriminating means.
Claim 9
Dependent Claim
53 words
A control method according to claim 5,further comprising the steps of detecting the amount of suction air; discriminating whether or not the air amount is at a set value; and correcting the opening signal of said throttle valve opening determining means on the basis of the value of said air amount discriminating means.
References Cited (Backward Citations)
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