EP0779424A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of controlling start of engine and device for carrying out the same
Assignee: Niterra Co Ltd
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Filing: 1996-12-12
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Granted: —
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Expires: 2016-12-12
Abstract
Abstract A method of controlling start of an internal combustion engine is provided. By the method, supply of fuel and ignition are suspended at the beginning or initial stage of cranking and started for the first time when a cranking speed has become a predetermined value. In a modified embodiment, a time elapsing from the starting of the cranking is measured, and supply of fuel and ignition are started when the time elapsing from the staring of the cranking has become a predetermined value, though the cranking speed does not become the predetermined value. The predetermined value can be altered depending upon battery voltage and coolant temperature A device for carrying out the method is also provided.
Inventors
- 👤 Kenichi c/o NGK Spark Plug Co. Ltd. Hattori
- 👤 Yoshihiro c/o NGK Spark Plug Co. Ltd. Matsubara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:04
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/06; F02D41/061; F02D41/062; F02D41/064
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
59 words
An method of controlling start of an internal combustion engine, comprising the steps of: detecting a coolant temperature of the engine; detecting a cranking speed at start of the engine; and suspending supply of fuel to the engine, when said coolant temperature is equal to or lower than a predetermined value, until said cranking speed becomes a predetermined value.
Claim 2
Dependent Claim
19 words
A method according to claim 1, wherein ignition in the engine is suspended until supply of fuel is started.
Claim 3
Dependent Claim
44 words
A method according to claim 1 or 2, wherein a cranking speed at which said supply of fuel is started is altered depending upon a variation of said coolant temperature in such a manner as to become lower as said coolant temperature becomes lower.
Claim 4
Independent Claim
59 words
A method according to any one of the preceding claims, further comprising the step of detecting a voltage of a battery used for cranking the engine, a cranking speed at which said supply of fuel is started being altered in such a manner as to become lower as said voltage becomes lower, depending upon a variation of said voltage.
Claim 5
Independent Claim
63 words
A method of controlling start of an internal combustion engine comprising the steps of: detecting a coolant temperature of the engine: detecting a cranking speed at start of the engine; measuring a time from the beginning of said cranking; suspending supply of fuel to the engine until a predetermined time elapses; and starting said supply of fuel after said predetermined time has elapsed.
Claim 6
Independent Claim
86 words
A method of controlling start of an internal combustion engine comprising the steps of: detecting a coolant temperature of the engine; detecting a cranking speed at start of the engine; measuring, when said coolant temperature is lower than a predetermined value, a time elapsing after said cranking speed has become a predetermined value; suspending supply of fuel to the engine until a predetermined time elapses after said cranking speed has become a predetermined value; and starting said supply of fuel after said predetermined time has elapsed.
Claim 7
Independent Claim
103 words
A device for controlling start of an internal combustion engine, comprising: coolant temperature detecting means for detecting a coolant temperature of the engine; cranking speed detecting means for detecting a cranking speed at start of the engine; fuel supplying and suspending means for supplying fuel or suspending supply of fuel to the engine; fuel supply controlling means for controlling said fuel supplying and suspending means in such a manner that supply of fuel to the engine is suspended, when said coolant temperature detected by said coolant temperature detecting means is lower than a predetermined temperature, until said cranking speed becomes a predetermined value.
Claim 8
Dependent Claim
57 words
A device according to claim 7, further comprising altering means for altering said predetermined cranking speed, said altering means altering said predetermined value on the basis of said coolant temperature detected by said coolant temperature detecting means in such a manner that said predetermined value of said cranking speed becomes lower as said coolant temperature becomes lower.
Claim 9
Dependent Claim
68 words
A device according to claim 7 or 8, further comprising ignition control means for controlling an ignition system of the engine, said ignition control means controlling said ignition system in such a manner that spark discharge by said ignition system is suspended during the time when said supply of fuel is suspended by said fuel supplying and suspending means and executed after said supply of fuel is started.
Claim 10
Independent Claim
92 words
A device according to any one of claims 7 to 9, further comprising battery voltage detecting means for detecting a voltage of a battery used for cranking of the engine, and altering means for altering said predetermined cranking speed at which said supply of fuel is started, said altering means altering said predetermined value of said cranking speed on the basis of said battery voltage detected by said battery voltage detecting means in such a manner that said predetermined value of said cranking speed becomes lower as said battery voltage becomes lower.
Claim 11
Independent Claim
109 words
A device for controlling start of an internal combustion engine, comprising: coolant temperature detecting means for detecting a coolant temperature of the engine; fuel supplying and suspending means for supplying fuel or suspending supply of fuel to the engine; time measuring means for measuring a time elapsing from the beginning of said cranking; and fuel supply controlling means for controlling said fuel supplying and suspending means in such a manner that supply of fuel to the engine is suspended, when said coolant temperature detected by said coolant temperature detecting means is lower than a predetermined temperature, until a time measured by said time measuring means becomes a predetermined value.
Claim 12
Independent Claim
144 words
A device for controlling start of an internal combustion engine, comprising: coolant temperature detecting means for detecting a coolant temperature of the engine; cranking speed detecting means for detecting a cranking speed at the time of start of the engine; fuel supplying and suspending means for supplying fuel or suspending supply of fuel to the engine; judgment means for judging, when said coolant temperature detected by said coolant temperature detecting means is lower than a predetermined value, whether said cranking speed has become a predetermined value; delay time setting means for setting a delay time delaying after said cranking speed has become a predetermined value; and fuel supply control means for controlling said fuel supplying and suspending means in such a manner that supply of fuel to the engine is suspended until said delay time elapses and started after said delay time has elapsed.
References Cited (Backward Citations)
No citation records indexed.
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