Engine fuel injection control apparatus
AssigneeMitsubishi Electric Corporation
InventorHiroyuki MATSUMOTO
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Abstract
In the case where it is determined, based on a throttle opening degree change detected by a throttle sensor 16, that the engine is in the acceleration mode, an engine fuel injection control apparatus according to the present invention calculates a correction coefficient Krt in accordance with a crankshaft rotation count RCNT during a time between the immediately asynchronous injection and the present asynchronous injection, and then corrects the amount of a fuel injected through the present asynchronous injection, based on the correction coefficient Krt.
Claims5
An engine fuel injection control apparatus including an electronic control unit that performs synchronous injection control where a fuel in a quantity calculated in accordance with an operation condition of an engine is injected in synchronization with a signal generated every predetermined crank angle by a crank angle sensor provided on a crankshaft of the engine and that performs asynchronous injection control where when an acceleration mode is detected based on a change in the opening degree indicated by a throttle sensor for detecting the opening/closing state of a throttle valve provided in an intake system of the engine, a fuel in a quantity calculated in accordance with the acceleration mode is injected at a timing that is different from the timing for the synchronous injection, wherein the electronic control unit has an asynchronous injection amount correction unit that corrects the amount of a fuel injected through the present asynchronous injection, based on a crankshaft rotation count obtained through the crank angle sensor during a time between the immediately previous asynchronous injection and the present asynchronous injection.
An engine fuel injection control apparatus including an electronic control unit that performs synchronous injection control where a fuel in a quantity calculated in accordance with an operation condition of an engine is injected in synchronization with a signal generated every predetermined crank angle by a crank angle sensor provided on a crankshaft of the engine and that performs asynchronous injection control where when an acceleration mode is detected based on a change in the opening degree indicated by a throttle sensor for detecting the opening/closing state of a throttle valve provided in an intake system of the engine, a fuel in a quantity calculated in accordance with the acceleration mode is injected at a timing that is different from the timing for the synchronous injection, wherein the electronic control unit has an asynchronous injection amount correction unit that corrects the amount of a fuel injected through the present asynchronous injection, based on an ignition count during a time between the immediately previous asynchronous injection and the present asynchronous injection.
An engine fuel injection control apparatus including an electronic control unit that performs synchronous injection control where a fuel in a quantity calculated in accordance with an operation condition of an engine is injected in synchronization with a signal generated every predetermined crank angle by a crank angle sensor provided on a crankshaft of the engine and that performs asynchronous injection control where when an acceleration mode is detected based on a change in the opening degree indicated by a throttle sensor for detecting the opening/closing state of a throttle valve provided in an intake system of the engine, a fuel in a quantity calculated in accordance with the acceleration mode is injected at a timing that is different from the timing for the synchronous injection, wherein the electronic control unit has an asynchronous injection amount correction unit that corrects the amount of a fuel injected through the present asynchronous injection, based on a synchronous injection count during a time between the immediately previous asynchronous injection and the present asynchronous injection.
Dependencies are inferred from the claim text.