Accumulator injection system for internal combustion engine, comprises pressure-maintaining valve arranged between high-pressure accumulator and high-pressure pump, which closes high-pressure line when stopping internal combustion engine

摘要

The accumulator injection system comprises a high-pressure accumulator (10), which is filled with fuel under high pressure by a high-pressure pump (11) through a high-pressure line (14) and maintains the injection pressure required for the injection. A pressure-maintaining valve (20) is arranged between the high-pressure accumulator and the high-pressure pump. The pressure-maintaining valve closes the high pressure line at the high-pressure accumulator leading to the high-pressure pump when stopping the internal combustion engine.