| 摘要 |
PROBLEM TO BE SOLVED: To use a seal block-shaped gear pump in a fuel system of an engine for a vehicle. SOLUTION: In this gear pump provided with a drive gear and a driven gear meshing mutually in a sealed gear case, side plates for sealing side faces of both gears, and a sealing member for sealing a tooth tip, the sealing member is provided among a plurality of tooth tips in the vicinity of a meshing part on a low pressure side separately from the gear case, a suction port is formed by the sealing member and the side plates, the inside of the gear case except the meshing part of both gears and the sealed parts is formed as a high pressure zone where pressure is increased for the suction port, and a pressure dividing seal is provided on the side plate and has cross section like stairs or a shaft of the driven gear is not restrained to the case to support rotation reaction force of an inside part composed of both gears and the sealing member in a central part of a rear surface of the sealing member. COPYRIGHT: (C)2007,JPO&INPIT
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