Denso CRS - Common Rail System Components and Types; Layout of Main Components

Operation Section
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2. COMMON RAIL SYSTEM OUTLINE
2.1 Layout of Main Components
z Common rail systems are mainly made up of the supply pump, rail, and injectors. There are the following types accord-
ing to the supply pump used.
(1) HP0 Type
• This system is the first common rail system that DENSO commercialized. It uses an HP0 type supply pump and is
mounted in large trucks and large buses.
Exterior View of Main System Components
Configuration of Main System Components (Example of HP0)
Q000755E
InjectorSupply Pump (HP0 Type)
Rail
Q000756E
Supply Pump
PCV (Pump Control Valve)
Cylinder
Recognition Sensor
(TDC (G) Sensor)
Rail Pressure Sensor
Rail
Engine ECU
Injector
Accelerator
Position Sensor
Crankshaft Position Sensor (Engine Speed Sensor)
Fuel Temperature
Sensor
Coolant Temperature
Sensor