the throttle body consists of a throttle valve, throttle position sensor that detects the throttle valve opening, throttle control motor that opens and closes the throttle valve, and a return spring that Read more Throttle body construction and operation
Engine
ETCS-i (Electronic Throttle Control System-intelligent)
The ETCS-i (Electronic Throttle Control System-intelligent) is a system that uses a computer to electrically control the throttle valve opening. Conventional throttle valve opening has been controlled Read more ETCS-i (Electronic Throttle Control System-intelligent)
Function of ISC Operation of Rotary Solenoid Type
1. Staring control
When the engine ECU receives a starter signal (STA), it determines that the engine is starting and opens the ISCV to improve startability. The ISCV opening is controlled according to Read more Function of ISC Operation of Rotary Solenoid Type
The ISC (Idle Speed Control) system
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). Read more The ISC (Idle Speed Control) system
Maximum and Minimum Advance Angle Control
When there is trouble with the predetermined ignition timing from the initial ignition timing, basic ignition advance angle and corrective ignition advance angle, it will affect the engine performance Read more Maximum and Minimum Advance Angle Control
Corrective Ignition Advance Control
1. Warm-up correction
An advanced angle is used for the ignition timing when the coolant temperature is low to improve drivability. Some engine models conduct correction advancing in response to the intake Read more Corrective Ignition Advance Control
Outline of Ignition Timing Control (Control of ESA)
The ignition timing control consists of two basic controls.
1. Starting ignition control
The starting ignition control is performed by conducting ignition at the predetermined crankshaft angle regardless Read more Outline of Ignition Timing Control (Control of ESA)
Basic Ignition Advance Angle
The basic ignition advance angle is determined using the NE signal and the VG signal or PIM signal. The NE and VG signal data used to determine the basic ignition advance angle is stored in the engine Read more Basic Ignition Advance Angle
ESA (Electronic Spark Advance) system
The ESA (Electronic Spark Advance) system is a system that uses the engine ECU to determine the ignition timing based on the signals from the various sensors. The engine ECU calculates the ignition timing Read more ESA (Electronic Spark Advance) system
Various Corrections in Gasoline Engine Injection Control System 2 of 2
4. Acceleration enrichment
The air-fuel ratio becomes lean, especially during the start of acceleration because a fuel supply lag tends to occur during acceleration against the rapid change of the amount Read more Various Corrections in Gasoline Engine Injection Control System 2 of 2