|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||123/497 ; 123/511 ; 123/458|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 25 인용 특허 : 0|
In a fuel supply system employing a returnless fuel pipe arrangement, a relief valve is provided at a discharge side of a fuel pump. The relief valve is opened when fuel pressure in the fuel pipe arrangement becomes no less than a system protective pressure, so as to relieve the fuel pressure to protect the system. The relief valve is also arranged to be open when the fuel pressure in the fuel pipe arrangement becomes higher than a target fuel pressure by a predetermined value or when the fuel cut is performed. Thus, the fuel pressure in the fuel pipe ar...
[ What is claimed is:] [1.] A fuel supply system for an internal combustion engine, and fuel supply system having a returnless fuel pipe arrangement in which no fuel return line is provided for returning an excessive portion of fuel, delivered under pressure from a fuel pump to a fuel injector, to a fuel tank, said fuel supply system comprising:fuel pressure control means for controlling said fuel pump so as to converge a fuel pressure in said fuel pipe arrangement to a target fuel pressure;a check valve provided at a fuel discharge port of said fuel pum...