Air/fuel handling system for fuel injection engine

A fuel handling system for a fuel injection engine comprising:

• a body,
• a fuel rail in said body and having at least one outlet to supply fuel to a fuel injector located at said outlet,
• a fuel pump located within said body and having a low pressure inlet to receive fuel from a fuel supply and a high pressure outlet to supply fuel to said fuel rail,
• a pressure regulator carried by said body to regulate high pressure fuel flow from said fuel pump to said fuel rail, and
• an overflow outlet in said pressure regulator in communication with the fuel supply to discharge excess fuel from said fuel rail.

An air/fuel handling system for a fuel injection engine comprising

• a body,
• a fuel chamber in said body and having a low pressure fuel inlet,
• a fuel pump received in said fuel chamber and having a pump inlet communicating with said low pressure fuel inlet and a high pressure pump outlet to supply fuel to at least one fuel injector of the engine,
• an air chamber in said body having an inlet and at least one outlet to supply air to the engine,
• an air/fuel housing connected to said body,
• an air flow passage in said housing communicating with the inlet of said air chamber and having a throttle valve therein to control air flow to said air chamber,
• a low pressure fuel .metering chamber formed in said housing and having a metering valve to control fuel flow from a fuel supply to the fuel metering chamber, and
• a vapor separator carried by said housing in communication with said fuel metering chamber and the inlet of said air chamber to allow fuel vapor to flow into said air chamber.

An air/fuel handling system for a fuel injection engine comprising

• a body,
• an air chamber in said body having an inlet and at least one outlet to supply .air to the engine,
• an air/fuel housing connected to said body,
• an air flow passage in said housing communicating with the inlet of said air chamber and having a throttle valve therein to control air flow to said air chamber,
• a low pressure fuel metering chamber formed in said housing and having a metering valve to control fuel flow from a fuel supply to the fuel metering chamber, and
• a vapor separator carried by said housing in communication with said fuel metering chamber and the inlet of said air chamber to allow fuel vapor to flow into said air chamber, said vapor separator having
• a vapor dome formed in said housing,
• a vapor port communicating said vapor dome with said fuel metering chamber, and
• a discharge port communicating said vapor dome with said air flow passage downstream of the throttle.

A fuel handling system for an engine with at least two fuel injectors comprising:

• a body,
• a fuel rail carried by said body and having at least two spaced apart outlets each to supply fuel directly to a separate fuel injector connected to each said outlet,
• a fuel pump located within said body and having a low pressure inlet to receive fuel from a fuel supply and a high pressure outlet to supply fuel to said fuel rail and the fuel injectors connected thereto, and
• a pressure regulator carried by said body to regulate high pressure fuel flow from said fuel pump to said fuel rail and the injectors connected thereto.