Secara umum ISC merupakan rangkaian elektronik yang fungsi utamanya adalah mengatur jumlah udara yang akan melalui idle port pada saat katup gas posisinya tertutup. Hal ini berbanding terbalik dengan komponen seperti IMAS dan ISAS terdahulu di mana pengemudi harus mengatur putaran idle di mesin secara manual. The ISC (Idle Speed Control) system is provided with a circuit that bypasses the throttle valve, and the air volume drawn in from the bypass circuit is controlled by the ISCV (Idle Speed Control Valve). The ISCV uses the signal from the engine ECU to control the engine at the optimum idling speed at all times. PDF | This paper proposes a novel modelling and optimization approach for steady state and transient performance tune-up of an engine at idle speed. In | Find, read and cite all the research The main objective of the idle speed control is to maintain the idling speed at 650rpm and to reject as quickly as possible the extra load exerted on the engine system during idling mode. Comparing the three methods, it shows that PID tuning by ILA produced better results than heuristic tuning and pole placement. The idle air control valve controls the air needed to maintain a steady idle speed. It essentially acts as a bypass of the throttle body plate. The solenoid in an idle air control valve can get The idle air control valve, commonly referred to as the "idle speed control valve," manages how quickly your engine idles. The computer in the engine is in charge of this. Your car may occasionally stall or idle abnormally due to faulty parts. 1) Stalled Engine - A bad idle speed control valve will cause your engine to stall. Depending on the extent of the wear 2) Idle Speed Changes - When you bring your vehicle to a complete stop, you may notice your engine idle speed changing 3) Difficulty Steering - During a situation where The idle speed controller ensures that the idle speed of the engine remains constant in all load conditions. On this page you can find out about how the idle speed actuator regulates the intake air mass of the engine, and how the failure of this actuator impacts on the engine running. Practical tips for troubleshooting and assembly instructions nvC1.