Fuel injection pump for diesel engine - press-fit ball in bore is connected with pressure chamber for relief of excess pressure

摘要

The bore section containing the ball may be the middle section of a longer bore consisting of three stepped sections, the bore section with the largest diameter may intersect with a smaller lateral bore and may be provided with an annular groove, the fuel injection pump is particularly suitable for heavy oil, and any pressure build up during cold start, is released to avoided damage.