摘要:
An intake-air measuring apparatus for an internal combustion engine, enabling to calculate a mass of intake-air inducted into the internal combustion engine, with a small map but at high accuracy, comprises: a means for measuring out an air mass passing through a throttle valve based on pressure in up/down streams of the throttle valve and temperature in the upstream of the throttle valve; a means for calculating an air mass passing through the intake valve based on a rotation speed of the internal combustion engine, an open/close timing of the intake valve and an opening of an EGR valve; and a means for selecting either one of the air mass passing through the throttle valve or the air mass passing through the intake valve, depending upon operation condition of the internal combustion engine, thereby outputting the selected air mass as inducted air mass into the internal combustion engine.
摘要:
A variable-speed electromechanical energy converter includes a wound-type induction motor and a power rectifier connected to a secondary winding of the motor to convert AC power produced by the motor into DC power. A chopper is connected to an output of the power converter to control the output thereof according to a control signal and a capacitor is connected through a rectifier device to the chopper. A power inverter converts DC power stored in the capacitor into AC power which is fed back to an AC system connected to the motor. The motor includes a cage rotor disposed between a wound rotor and a rotor shaft, the cage rotor being separated from the rotor shaft by an inner gap and separated from the wound rotor by a middle gap so as to rotate independently of the rotor shaft.
摘要:
The invention provides an internal combustion engine misfire detection device for a motor vehicle in which an output of an internal combustion engine is transmitted via a torque converter to a drive shaft. A primary misfire detecting unit detects an internal combustion engine misfire condition including a possible false condition thereof; and an external cause detecting unit detects an influence associated with an external cause variation in terms of an operating condition variation transmitted from the drive shaft via the torque converter. A misfire judging unit judges whether the internal combustion engine misfire condition detected by the primary misfire detecting unit is a true misfire condition or a false misfire condition based on the detection output from the external cause detecting unit. A processing unit performs a predetermined processing to detect a misfire operating condition in response to a judgment by the misfire judging unit that the detected operating condition is a true misfire operating condition; and a misfire judgment disabling unit renders the misfire judging unit inoperative in response to a judgment by the misfire judging unit that the detected operating condition is a false misfire operating condition.
摘要:
A fuel injection control device for an internal combustion engine includes a canister which temporarily collects fuel vapor purge gas generated in a fuel tank and a canister purge gas control system which introduces the collected fuel vapor purge gas into the internal combustion engine during the operation thereof. The canister purge gas control system includes a purge gas air/fuel ratio calculating system which determines the purge gas air/fuel ratio of the collected fuel vapor purge gas to be introduced into the combustion engine, and only during a time when the purge gas air/fuel ratio calculated by the purge gas air/fuel ratio calculating system is within a predetermined range, the canister purge gas control system interrupts the introduction of the collected fuel vapor purge gas into the internal combustion engine so as to permit an air/fuel ratio learning control system to perform an air/fuel ratio learning control, whereby an air/fuel ratio learning control is performed without causing an air/fuel ratio variation and an output power variation of the internal combustion engine.
摘要:
An electronic fuel injection device for an internal combustion engine, wherein operating conditions of the internal combustion engine is detected; a fuel injection value for the internal combustion engine is calculated based upon the detected operating conditions; the calculated fuel injection value is corrected by a fuel correction value during engine start which is stored in a memory; a fuel injection pulse for a fuel injector corresponding to the corrected fuel injection value during engine start is generated; a start time of the internal combustion engine started by the fuel injection determined by generated fuel injection pulse; a start time rank for the detected start time is assigned depending upon the length of the start time; a new fuel correction value is calculated by summing up variables of factors in Table 1 which influence the air/fuel ratio during engine start and are determined for every start time rank based upon the assigned start time rank; the fuel correction value used for the present engine start is renewed by adding the calculated new fuel correction value during engine start and is stored in the memory for use in the next engine start.
摘要:
The present invention has a means for calculating the amount of air to be inhaled into the cylinder in a steady state of an internal combustion engine by using a regression model based on the rotational speed of an internal combustion engine, the pressure in an intake pipe, and the valve lift characteristics of the variable valve, and also includes a means for estimating the amount of air to be inhaled into the cylinder of an internal combustion engine by compensating for a delay in flow rate detection by an intake airflow rate detection means according to a change in the amount of air to be inhaled that is caused by a change, which is calculated by the regression model, in variable valve operation.
摘要:
A control device for an internal combustion engine, which comprise a turbocharger, of which turbo flow rate is made variable, and an intake valve provided with a variable valve mechanism and in which mirror cycle is performed, the control device comprising: device, which calculates an intake air quantity per unit time and an intake air quantity per cycle on the basis of torque required to the internal combustion engine; device, which controls the turbocharger so that with the intake air quantity per unit time, supercharging pressure is further increased in that range, in which a ratio of supercharging pressure and exhaust pressure is equal to or less than a predetermined value; and device, which controls the variable valve mechanism on the basis of the supercharging pressure and the intake air quantity per cycle.
摘要:
In a control device for an internal combustion engine having a turbocharger with a variable turbo flow rate, and an intake valve provided with a variable valve mechanism, mirror cycle operation is performed. The control device includes a device which calculates an intake air quantity per unit time and an intake air quantity per cycle on the basis of torque required to the internal combustion engine. The turbocharger is controlled so that, with the calculated intake air quantity per unit time, supercharging pressure is further increased in a range in which the ratio of exhaust pressure to supercharging pressure is equal to or less than a predetermined value. A further device, which controls the variable valve mechanism on the basis of the supercharging pressure and the calculated intake air quantity per cycle.
摘要:
When an engine torque trace is set during acceleration or deceleration, the ratio of increase or decrease in the engine torque per unit time is restricted so that when the engine torque generated during acceleration or deceleration approaches an engine torque (balance torque) at which the engine is oriented upright with respect to the engine mount, the engine torque stays near the balance torque for a prescribed time.
摘要:
A transient correction of an ignition timing is precisely executed even in a transient state. The ignition timing at a stationary time is computed on the basis of an operating state detected by an operating state detecting means, and the ignition timing at the stationary time is corrected by a transient time ignition timing correcting means defined by a transfer function G(s).