Patent ID: 6021759
Filing Date: 2000-02-08
Classification: F02M

Abstract:
A fuel supply apparatus for supplying high pressure fuel to a fuel injection device, comprising:a high pressure pump for producing high pressure fuel and for supplying high pressure fuel to the fuel injection device;a first low pressure fuel passage that has a cross sectional area of S.sub.0, and that is connected to said high pressure pump for supplying low pressure fuel to said high pressure pump;a second low pressure fuel passage that has a cross sectional area of S.sub.2, and that is connected to said first low pressure fuel passage for supplying said low pressure fuel to said first low pressure fuel passage, said second low pressure fuel passage having an orifice that has a cross sectional area of S.sub.1 between said first low pressure fuel passage and said second low pressure fuel passage; anda pressure regulator installed in said first low pressure fuel passage for regulating pressure of the low pressure fuel, wherein;said cross sectional areas S.sub.0, S.sub.1 and S.sub.2 are set to satisfy the following relationship:S.sub.1 <S.sub.0 <S.sub.2.