Fuel System Flow Diagram - SSANGYONG Actyon Sports II 2012.01 Manual

03-24

2) Fuel System Flow Diagram

The fuel from the fuel tank is supplied to the fuel heater of fuel filter/priming pump and then low
pressure generated by the low pressure pump (built into HP pump) is transmitted to the HP pump.
The fuel pressure at the HP pump is controlled by the IMV valve, and the maximum allowed
pressure is 1,800 bar. The compressed fuel at the fuel pump is delivered to the rail, and injected by
the injectors according to the injection signals. The injection method is the same with the
conventional method; Fuel return by backleak which operates the needle valve.
The major difference is that the fuel return line is connected to the fuel filter inlet port, not the HP
pump venturi.
The pressure from the high pressure pump is increased to 1,800 bar from 1,600 bar, and the pump
is now installed to the cylinder head (cylinder block for previous model). The fuel pressure is
generated by the operation of intake camshaft and gears. The specifications for the IMV valve and
the fuel temperature sensor are not changed.