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Details the vehicle models and engine types for which the common rail system is applicable.
Lists part numbers for various components of the common rail system for different engine models.
Explains the fundamental characteristics and advantages of the common rail system.
Describes the key features of injection control including pressure, timing, and rate control.
Compares the common rail system with traditional injection systems.
Identifies the primary components that constitute the common rail system.
Details the operational functions of the supply pump, rail, injectors, and engine ECU.
Outlines the complete fuel flow path within the common rail system.
Explains the structure of the control system, dividing it into sensors, ECU, and actuators.
Provides a general overview of the supply pump's construction and function.
Illustrates the external appearance of the supply pump for different engine models.
Details the internal path of fuel flow through the supply pump.
Explains the mechanical construction and internal workings of the supply pump.
Describes the operational cycle of the supply pump plungers and fuel delivery.
Details the trochoid type feed pump integrated within the supply pump.
Explains the SCV's function in regulating fuel quantity supplied to the plungers.
Describes the fuel temperature sensor and its role in injection volume correction.
Describes the rail's function in storing and distributing high-pressure fuel.
Details the rail pressure sensor and its signal output to the ECU.
Explains the function of the pressure limiter in controlling excess rail pressure.
Introduces the injector's role in injecting fuel into combustion chambers.
Describes the compact, energy-saving solenoid-control type injector.
Shows the external view of injectors for different engine models.
Details the internal construction of the injector, including the TWV.
Explains the injector's operation modes: non-injection, injection, and end of injection.
Discusses the adoption of QR codes for improved injector quantity precision.
Illustrates the circuit diagram for actuating the injector solenoid.
Provides a schematic overview of the entire engine control system.
Describes the Engine ECU as the central command unit for fuel injection and engine operation.
Explains the TDC sensor's role in identifying cylinder position.
Details the semiconductor pressure sensor for measuring turbo and atmospheric pressure.
Describes the mass air flow meter and its built-in intake air temperature sensor.
Explains the function and operation of the electronic control throttle system.
Introduces the advanced control capabilities compared to conventional systems.
Details the pilot injection control for minimizing initial ignition rate.
Explains control of fuel injection quantity based on engine speed and accelerator signals.
Describes control of injection timing based on engine speed and injection quantity.
Details rail pressure feedback control for matching discharge volume to optimal values.
Explains how injection quantity is determined by adding various corrections.
Describes the calculation method for determining final injection quantity.
Details basic, maximum, and starting injection quantities and idle speed control.
Explains that injection timing is controlled by varying current application to injectors.
Details calculation of main and pilot injection timing based on various parameters.
Describes the learning control process to preserve injection quantity accuracy.
Explains how pilot injection minimizes initial ignition rate to reduce NOx and noise.
Describes how ECU determines fuel injection pressure based on quantity and engine speed.
Explains the meaning of SAE diagnostic trouble codes output via STT (WDS).
Lists and details diagnostic trouble codes common to 4D56/4M41 models.
Shows the wiring diagram connecting various sensors and actuators to the Engine ECU.
Details the ECU connector pin assignments and their corresponding signals.
General| Fuel Type | Diesel |
|---|---|
| Fuel System | Direct Injection |
| Aspiration | Turbocharged |
| Valvetrain | DOHC, 16-Valve |
| Engine Type | 4-Cylinder, Inline |
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