초록 ▼

In order to prevent a damage on a component forming a pressure feed fuel passage and to reduce a fuel injection pump in size and weight, the pressure feed fuel passage having fuel discharge passage, fuel chamber and accommodation hole formed in respective cylinder heads is formed straightly in respe

In order to prevent a damage on a component forming a pressure feed fuel passage and to reduce a fuel injection pump in size and weight, the pressure feed fuel passage having fuel discharge passage, fuel chamber and accommodation hole formed in respective cylinder heads is formed straightly in respective cylinder heads, and has communication port for communicating with fuel pressure chamber and fuel outlet which has an opening at an outer peripheral wall of the cylinder heads. Fuel pressurized in fuel pressure chamber at the cylinder head side is introduced into fuel chamber of cylinder head via fuel passage and fuel lines. Fuel pressurized in both fuel pressure chambers is merged at fuel chamber of cylinder head, and is supplied to a common-rail via fuel passage.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fuel injection pump comprising:a rotatable cam;a drive shaft for transmitting a rotational force to said rotatable cam;at least two fuel pressure chambers for pressurizing fuel;at least two pressure feed fuel passages for transmitting fuel pressurized in said respecti

[ What is claimed is:] [1.]1. A fuel injection pump comprising:a rotatable cam;a drive shaft for transmitting a rotational force to said rotatable cam;at least two fuel pressure chambers for pressurizing fuel;at least two pressure feed fuel passages for transmitting fuel pressurized in said respective fuel pressure chambers;a moving member for reciprocating according to a rotation of said cam to pressurize fuel in said fuel pressure chambers and to transmit said pressurized fuel to said pressure feed fuel passages;at least two cylinder heads, each made of metal, and forming said respective fuel pressure chambers thereinside;a main housing made of metal having a lesser hardness and weight than the metal of each of said cylinder heads for rotatably supporting said drive shaft, wherein;each one of said pressure feed fuel passages includes a communication port for communicating with said fuel pressure chamber;each one of said pressure feed fuel passages includes a fuel outlet; andsaid pressure feed fuel passages are formed in said cylinder heads, respectively.