The engine ECU changes the fuel injection volume by changing the injector injection duration. The actual fuel injection duration is determined by the following two items.
1. The basic injection duration Read more Gasoline Engine Fuel Injection Duration Control
control
Gasoline Engine EFI (Electronic Fuel Injection) Fuel System
The EFI system uses various sensors to detect the engine condition and vehicle running condition. And the engine ECU calculates at the optimum fuel injection volume, and causes the injectors to inject Read more Gasoline Engine EFI (Electronic Fuel Injection) Fuel System
Gasoline Engine Accelerator Pedal Position Sensor
The accelerator pedal position sensor converts the amount that the accelerator pedal is depressed (angle) to an electrical signal that is sent to the engine ECU. In addition, to ensure reliability, this Read more Gasoline Engine Accelerator Pedal Position Sensor
Throttle Position Sensor
The throttle position sensor is installed on the throttle body. The sensor converts the throttle opening angle to voltage, which is sent to the engine ECU as the throttle opening signal (VTA). In addition, Read more Throttle Position Sensor
What is a Sensor Terminal Voltage?
The sensors convert various information into voltage change that can be detected by the engine ECU. There are many types of sensor signals, but there are five main types of methods for converting the information Read more What is a Sensor Terminal Voltage?
Gasoline Engine Electronic Control System
The engine control system consists of three groups including sensors (and sensor output signals), engine ECU, and actuators. This chapter explains the sensors (signals), power circuitry and ground circuitry, Read more Gasoline Engine Electronic Control System
Outline of Electronic Fuel Injection and Idle Speed Control System
EFI (Electronic Fuel Injection)System
The EFI system uses various sensors to detect the operating conditions of the engine and the vehicle. In accordance with the signals from these sensors, the ECU calculates Read more Outline of Electronic Fuel Injection and Idle Speed Control System
Computer Control of Gasoline Engine
A gasoline engine produces power through the explosion of a mixture of gasoline and air. The three essential elements for a gasoline engine to produce power are the following
1. Good air-fuel mixture
2. Read more Computer Control of Gasoline Engine
VE Pump Options ACSD (Automatically-controlled Cold Starting Device)
1. Description
The ACSD uses the contractive and expansive properties of thermo wax and the tension of a spring to automatically advance the injection timing in response to the coolant temperature, causing Read more VE Pump Options ACSD (Automatically-controlled Cold Starting Device)
Boost Pressure Control
The turbocharger attains a high output by pumping compressed air into the cylinders. However engine parts will be unable to withstand the explosive force if the boost pressure rises too high. In this case, Read more Boost Pressure Control