Note: Beginning in 1985, Ford multi-port EFI uses an Idle Air Control (IAC) valve, which allows air to bypass the throttle plates. Unlike the stepper motors used by GM and Chrysler, the Ford units only have two terminals and one winding. These units regulate IAC plunger position using pul...
A vehicle is driven by an internal combustion engine having an air induction passage with an idle air control valve positionable by a stepping motor in response to valve opening and valve closing pulses. A counter normally counts the pulses arithmetically to provide an indication of valve position...
air quantity of an idle control valve is caculated as a total sum of an air mass accumulated in a chamber by an intake air system model and an air mass sucked in a cylinder, and based on a calculation value of a pass air qnantity, the opening of an idle control valve is controlled...
to controlling the position of the throttle to achieve fast idle during engine warm-up, a variety of systems can be found in the prior art having a valve controlled throttle bypass air passage which admits auxiliary or idle air into the manifold at a point downstream of the closed throttle. ...
1. An idle speed control apparatus for an internal combustion engine which includes an intake manifold for supplying intake air to the engine and a throttle valve disposed in the intake manifold for adjusting the amount of intake air sucked into the engine, said idle speed control apparatus compr...
Introduction Idle Stepper Motor is mainly used to control the throttle valve body of various automobiles, and has the advantages of good stability, high precision, and long life.The idle speed motor is an elemen...
Common cabin air assembly water separator liquid check valve 21 charcoal filters stationwide HEPA filters in Node 3 Blower in carbon dioxide removal assembly (twice, first replacement failed) Sample Distribution Assembly in Node 3 Mass Spectrometer assembly ...
Because throttle plate 62′ is electronically controlled, an idle bypass valve (element 96 of FIG. 1A) is not provided. Referring now to FIG. 2 a block diagram is shown of the idle control system implemented by the controller executing computer code stored in ROM 106 of controller 12. The...
control valve is closed, the air flow rate is minimized and when the throttle control valve is opened, the flow rate through the induction system can be somewhat controlled. The use of a bypass passage allows air to bypass the throttle control valve for supply to the engine even when the ...
A method for controlling a mechanical solenoid valve of a high-pressure fuel pump to supply fuel to an engine is provided. In one example, current supplied to the mechanical solenoi