Hydraulic fuel injection initiation adjuster for IC engines has hydraulic line to tappet containing hydraulic fluid pressure intensifier for tappet adjustment

摘要

The engine has a fuel injection system with a pump element with hydraulically length-adjustable tappet. The hydraulic pipe leading to the tappet contains a pressure intensifier, to increase the hydraulic fluid pressure for tappet adjustment. The intensifier has a stepped piston (11), a magnetic valve (2), a pressure accumulator (9), and two back pressure valves (8a,b). Engine oil is used as hydraulic fluid.