Fuel injection control apparatus of engine
AssigneeUnisia Jecs Corporation
InventorHirokazu Shimizu
Life of this patent
Estimating the term…
Abstract
In an engine equipped with a variable valve timing mechanism that variably controls the valve timing successively, when variably controlling the valve timing, a transient correction amount of fuel supplied to the engine is corrected based on the detection value of the valve overlap amount of the intake/exhaust valves.
Claims19
A fuel injection control apparatus of an engine equipped with a variable valve timing mechanism that controls the valve timing of at least one of an intake valve and an exhaust valve, comprising:
- a valve timing detector that detects the valve timing controlled by said variable valve timing mechanism;
- and
- a fuel injection controller that inputs with a signal from said valve timing detector to detect a state in which the valve timing is switched by said valve timing mechanism, computes a valve overlap amount of the intake/exhaust valves when the valve timing is being switched, corrects a transient correction amount of fuel being supplied to the engine based on the computation value of said valve overlap amount, corrects and computes a fuel injection quantity by said corrected transient correction amount, and outputs a signal for said fuel injection quantity to a fuel injection valve.
A fuel injection control apparatus of an engine equipped with a variable valve timing mechanism that controls the valve timing of at least one of an intake valve and an exhaust valve, comprising:
- valve timing detecting means for detecting the valve timing controlled by said variable valve timing mechanism;
- valve timing switching state detecting means for inputting with a signal from said valve timing detecting means to detect a state in which the valve timing is switched by said valve timing mechanism;
- valve overlap amount computing means for computing a valve overlap amount of the intake/exhaust valves when the valve timing is being switched;
- transient correction amount correcting means for correcting a transient correction amount of fuel being supplied to the engine based on the computation value of said valve overlap amount;
- fuel injection quantity computing means for correcting and computing a fuel injection quantity by said corrected transient correction amount;
- and
- fuel injection valve driving means for outputting a signal for said fuel injection quantity to a fuel injection valve to drive said fuel injection valve.
A fuel injection control method of an engine equipped with a variable valve timing mechanism that controls the valve timing of at least one of an intake valve and an exhaust valve,
- wherein the valve timing controlled by said variable valve timing mechanism is detected,
- a signal from a valve timing detector is input to detect a state in which the valve timing is switched by said valve timing mechanism,
- a valve overlap amount of the intake/exhaust valves when the valve timing is being switched is computed,
- a transient correction amount of fuel being supplied to the engine is corrected based on the computation value of said valve overlap amount,
- a fuel injection quantity is corrected and computed by said corrected transient correction amount, and
- a signal for said fuel injection quantity is output to a fuel injection valve to drive said fuel injection valve.
Dependencies are inferred from the claim text.