| 摘要 |
PURPOSE:To control the lead angle in starting in a cold climate by providing a second conduit independently of a first conduit having an interposed servo- valve mechanism, while changeover therebetween being effected in response to the existing temperature. CONSTITUTION:The first conduit 26 providing communication between pump chamber 2 and a pressured fuel inflow chamber 12 through a servo-valve mechanism 16 to check the move of a timer piston 7 actuated by the reaction of a roller holder 3. The second conduit 29 is set independently of the first conduit 26. The first piston 31 serving as a switching over means 27 between the conduits 26 and 29 is incorporated in a fit-holding chamber 28 laid in the radial direction of the timer piston 7, and a temperature sensitive material 37 is attached to the second piston 32 incorporated in a fit-holding 30 in a pump hausing 1. When it is cold, the second conduit 29 is opened by the energizing force of a spring 39. Thus, the lead angle can be controlled when the pump is started in a cold climate.
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