Fuel supply system for e.g. multi-cylinder diesel engine, has pressure detecting unit detecting fuel pressure in fuel supply channel, and evaluating unit evaluating air quantity mixed in fuel from detected pressure value

摘要

The system has a fuel supply channel to supply fuel to an exhaust boss (26) of a high pressure fuel pump (4) through an interior of a low pressure fuel pump (5) and a pressurization chamber (31) of the high pressure pump. A control device (10) has a pressure detecting unit to detect a fuel pressure in the supply channel, and an evaluating unit to evaluate an air quantity mixed in the fuel from the detected fuel pressure value.