Fuel injection system for combustion engine, has relief valves provided with temperature-dependent working device that is interconnected at suction side of inlet pressure pump and fuel return line

摘要

#CMT# #/CMT# The system has an inlet pressure pump (1) connected with a tank at a suction-side and interconnected with a high pressure pump (2) on a discharge side. The high pressure pump comprises relief valve (5) redirecting fluid into a fuel return line (6), where the relief valve is provided with a temperature-dependent working device. The temperature-dependent working device is interconnected at the suction side of the inlet pressure pump and the fuel return line. The inlet pressure pump is electrically operated in an adjustable manner. #CMT#USE : #/CMT# Fuel injection system for a combustion engine. #CMT#ADVANTAGE : #/CMT# The temperature-dependent working device is interconnected at the suction side of the inlet pressure pump and the fuel return line, thus improving cold start capability of the combustion engine. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a circuit diagram of a decorated fuel circuit. 1 : Inlet pressure pump 2 : High pressure pump 5 : Relief valve 6 : Fuel return line 8 : Heat extension element.