Document Type and Number:
Japanese Patent JPH034780
Kind Code:
Y2
Abstract:
A distributor-type fuel injection pump comprises a pump body 1 including an internal lubrication space 5 or 2 to be lubricated with a lubrication oil, a fuel feed pump 34, e.g. of sliding vane type (Figures 3 & 4), disposed in the pump body adjacent to the lubrication space and separated by an oil seal 50a or 50b housed in a sealing chamber 49a, 49b facing to the feed pump, and a pressure release passageway 58 communicating the sealing chamber with the low pressure side of the feed pump. With this construction, the fuel pressure in the sealing chamber is released to the low pressure side of the feed pump through the pressure release passageway 58. As a result, the fuel pressure applied to the oil seal can be maintained low so that the fuel leakage into the lubrication space is minimised.
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Application Number:
JP2437885U
Publication Date:
February 07, 1991
Filing Date:
February 22, 1985
Export Citation:
International Classes:
F02M39/00; F02M41/12; F02M59/44; F02M63/00; F04C15/00; (IPC1-7): F02M41/12