Fuel flow path module in inline pump type fuel injection apparatus

• US 7,243,640 B2
• Filed: 12/02/2005
• Issued: 07/17/2007
• Est. Priority Date: 12/10/2004
• Status: Expired due to Fees

• Current Assignee: Keihin Corporation (Hitachi, Ltd.)
• Original Assignee: Keihin Corporation (Hitachi, Ltd.)
• Inventors: Kondo, Yasushi
• Primary Examiner(s): SOLIS, ERICK R
• Application Number:
  US11/291,769
• Publication Number:
  US 20060124111A1
• Time in Patent Office: 592 Days
• Field of Search: 123/511, 123/514, 123/516
• US Class Current: 123/516
• CPC Class Codes: F02M 2037/082 Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets
• CPC Class Codes: F02M 25/0854 Details of the absorption canister
• CPC Class Codes: F02M 37/106 the pump being installed in a sub-tank

Abstract

To make a length in a horizontal direction of a vapor return joint small, thereby improving an assembling property of a fuel flow path module to a fuel tank, a vapor inflow hole, a fuel outflow hole and a regulator fuel inflow hole are provided in a fuel tube portion of a fuel flow path module, a vapor return joint is provided uprightly in an upper side of the vapor inflow hole, the vapor return joint comprises by a first straight pipe portion, and a second straight pipe portion connected to an upper end of the first straight pipe portion at a narrow angle A downward, an intersection between the first straight pipe portion and the second straight pipe portion is arranged above an upper opening end of the second straight pipe portion.

Claims

1. A fuel flow path module in an inline pump type fuel supply apparatus comprising:

a fuel tube portion formed in a vertical direction;

an attaching collar portion formed toward a side portion from an outer periphery of the fuel tube portion;

a vapor inflow hole, a fuel outflow hole and a regulator fuel inflow hole provided toward an upper end from a lower end of the fuel tube portion;

a vapor return joint provided uprightly in an upper side of the vapor inflow hole; and

a pressure regulator arranged so as to be connected to the regulator fuel inflow hole,

wherein said vapor return joint comprises;

a fuel flow path module which is formed by a first straight pipe portion extending toward an upper side, and a second straight pipe portion arranged so as to be connected at a narrow angle A from an upper end of the first straight pipe portion toward a downward direction, and in which an intersection of connection between the first straight pipe portion and the second straight pipe portion is arranged at an upper position from an upper opening end of a lower opening portion of the second straight pipe portion;

a pump receiving case which receives a fuel pump, and in which a fuel inflow hole is open to a lower side and a vapor discharge hole is open to an upper side; and

a fuel distribution pipe in which a fuel injection valve J is arranged so as to be inserted toward a fuel distribution path,

wherein the fuel tube portion provided with the vapor return joint and the pressure regulator of said fuel flow path module is inserted into a fuel tank via a module insertion hole open to a bottom portion of the fuel tank, and the fuel flow path module is fixedly arranged in the fuel tank via an attaching collar portion, and

wherein the fuel outflow hole and the fuel inflow hole are connected by a fuel inflow pipe, the vapor discharge hole and the vapor inflow hole are connected by a vapor relief pipe, the pump discharge path and the fuel distribution path are connected by a fuel outflow pipe, and a regulator fuel pipe branched from the fuel outflow pipe is connected to the regulator fuel inflow hole.