摘要:
A fuel control system for an internal combustion engine capable of correcting an inlet air flow rate, used for the computation of a fuel injection, in consideration of a blow-back flow rate. The inlet air flow rate is detected by a hot-wire type sensor and sampled by a control unit. The control unit determines whether or not the sampled inlet air flow rate has reversed twice its gradient from the negative one to the positive one between predetermined crank angles of the engine and computes the blow-back flow rate subtracted from the inlet air flow rate.
摘要:
A fuel injection control apparatus for an internal combustion engine using a hot-wire type air flow sensor wherein, even during a low engine speed and in a fully opened condition of the throttle valve of the engine, the output of the air flow sensor is corrected corresponding to the opening of the throttle valve and the engine speed on the basis on a predetermined relationship therebetween, thereby providing a proper A/F ratio.
摘要:
A fuel control apparatus for an internal combustion engine comprises, an air intake quantity detector to detect a parameter related to an air intake quantity for the engine, a filter for filtering an output from the air intake quantity detector, a switch for changing the filter coefficient of the filter on the basis of operational conditions of the engine, a controller to control a fuel supply quantity to the engine on the basis of the output of the filter, and a corrector to correct the fuel supply quantity depending on an error between an output from the filter and another output from the same at a predetermined crank angle when the error exceeds a predetermined value, wherein the predetermined value is changed depending on the filter coefficient which is changed by the switch.
摘要:
In a fuel supply control method including determining a cylinder at a suction stroke in a multiple cylinder internal combustion engine at each generation of a first predetermined crank angle position signal and injecting/supplying into a cylinder at a suction stroke a first amount at fuel which is computed by a first technique based on a sucked amount of air, A, and number of engine rotations, N, representing an engine load, a method comprises determining a cylinder at a suction stroke for asynchronous injection at each generation of a second crank angle position signal which is nearer to a top dead center of each cylinder than the first predetermined crank angle position signal; detecting a throttle valve opening for each predetermined time Ts and computing a throttle value opening variation .DELTA. .circleincircle.H ; and injecting/supplying, upon determining the variation .DELTA. .circleincircle.H as being greater than a predetermined value, a second amount of fuel corresponding to the variation .DELTA. .circleincircle.H into the cylinder which has been determined by the second crank angle position signal as being at the suction stroke and into a cylinder at a corresponding exhaust stroke. By so doing, there is an increased chance of being able to correct an incremental fuel which is asynchronously injected into a cylinder at the suction stroke and cylinder at the exhaust stroke, thus ensuring an enhanced response of the vehicle to an engine output at a time of acceleration.
摘要:
A fuel controller for an internal combustion engine has a control unit which calculates the amount of fuel to be supplied to the engine by fuel injectors and drives the fuel injectors with a prescribed timing. The timing of the fuel injection is advanced at high engine speeds. The fuel injection timing is set such that the fuel injection is performed substantially in synchrony with the calculation of the amount of fuel to be supplied even when the fuel injection timing is advanced.
摘要:
Opening degree of the throttle valve of an engine is detected and compared with a plurality of throttle opening degree reference values which are preset to be minuter in the lower region of the throttle opening degree. Each time the actual throttle opening degree exceeds one of the reference values, an extra fuel injection pulse is outputted in addition to regular injection pulses to increase the amount of fuel to be supplied to the engine.
摘要:
A system and a method for controlling fuel supply to an internal combustion engine are disclosed in which excessive supply of fuel to the engine is effectively prevented in a most reliable manner particularly at the time of engine deceleration. To this end, a reduction in the amount of intake air sucked into an engine per intake stroke is sensed, and the amount of fuel supplied to the engine is reduced when there is a reduction in the intake air amount sucked into engine per intake stroke. The amount of reduction in the fuel supply is changed in accordance with at least one of the number of revolutions per minute of the engine and the amount of intake air sucked into the engine per intake stroke.
摘要:
A fuel feed quantity control system of the so-called L-Jetronic system is described. The system is equipped with a Karman vortex air-flow sensor, at least one injector for feeding a fuel into an internal combustion engine, a controller for controlling the quantity of the fuel, which is to be injected, on the basis of intake air flow rate information from the air-flow sensor, and at least one operation parameter sensor. The controller also includes at least one additional control unit which serves to correct the quantity of the fuel, which is to be fed into the engine, in accordance with at least one operation parameter from the operation parameter sensor and frequency information outputted from the air-flow sensor. The quantity of the fuel, which has been determined based on an output from the air-flow sensor, is corrected by the controller in accordance with changes in kinematic viscosity of the atmospheric air.
摘要:
A fuel controlling system for an internal combustion engine, e.g. a vehicular engine, provided for ensuring an appropriate air fuel ratio and a stable rotational output independently of variations in the quantity of air introduced into the engine.
摘要:
A fuel supply control apparatus for an internal combustion engine comprises a detecting means for detecting the increment of air intake quantity for the internal combustion engine and a sensor for detecting temperature of the cooling water of the internal combustion engine so that the fuel supply quantity is increased according to the temperature of cooling water when the increment of air intake quantity is detected, thereby enabling rapid increment of fuel supply quantity according to the increment of the revolution of the engine and compensation of fuel supply loss, which is caused by adhesion of liquefying fuel inside the air intake pipe and the like, according to the temperature of cooling water.