Acceleration regulator for fuel injection engine - uses change in damping pressure on inlet manifold suction sensor to increase fuel supply pressure

摘要

The metered fuel quantity is determined by a valve (7). The fuel inlet is governed by a plunger (11) operated by the inlet manifold suction sensor (3), and the pressure in a control line (32) governed by orifices (32, 34) and an electrically operated valve (37). The plunger (11) terminates in a damping chamber (49) connected to the fuel pressure line (16) through an orifice valve (50) to prevent small fluctuations Connected directly (56) to this chamber is the fuel pressure regulating valve (27), arranged as a differential pressure valve. If the damping chamber pressure rises above a set level the regulating valve closes and the fuel pressure rises to the max. the pump (14) can deliver. The increased fuel pressure is used to force the extra fuel into the metering valve (7) against the control line pressure in the inlet valves (24).