Fuel supply apparatus for internal combustion engines
First Claim
1. A fuel injection apparatus for internal combustion engines having a fuel injection pump which includes a predetermined interior pressure for supplying a regulatable fuel injection quantity, a ventilation apparatus for the fuel injection pump and an exhaust gas recirculation means controlled by said fuel quantity, characterized in that a spring-loaded piston-type fuel quantity meter of a mixture regulator is disposed in an inlet to the fuel injection pump, said mixture regulator having a piston the position of which, determined by the fuel quantity at a particular time, is ascertained by a travel receptor, said travel receptor arranged to determine the exhaust gas quantity recirculated to an intake tube, further that disposed in a discharge of said injection pump is a pressure-controlled ventilation valve, which communicates with a heat exchanger, said valve arranged to be controlled by pump interior pressure (ppi) and adjusted such that its pressure effecting the opening (po) is greater than the maximum interior pressure of said injection pump in an exhaust gas test range.
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Accused Products
Abstract
A fuel supply apparatus for internal combustion engines is proposed, which has a fuel injection pump for supplying a regulatable fuel injection quantity, a ventilation apparatus for the fuel injection pump, a fuel quantity meter and a means of exhaust gas recirculation controlled by fuel quantity. A ventilation valve responding to a predetermined pump interior pressure is included in an overflow line in order to cool the fuel injection pump by connection with the fuel supply container. The fuel quantity meter is embodied as a spring-loaded piston-type fuel quantity meter and has a travel receptor which generates an electrical output signal and delivers it to a control member of the exhaust gas recirculation system for varying the recirculated exhaust gas quantity accordingly.
12 Citations
9 Claims
- 1. A fuel injection apparatus for internal combustion engines having a fuel injection pump which includes a predetermined interior pressure for supplying a regulatable fuel injection quantity, a ventilation apparatus for the fuel injection pump and an exhaust gas recirculation means controlled by said fuel quantity, characterized in that a spring-loaded piston-type fuel quantity meter of a mixture regulator is disposed in an inlet to the fuel injection pump, said mixture regulator having a piston the position of which, determined by the fuel quantity at a particular time, is ascertained by a travel receptor, said travel receptor arranged to determine the exhaust gas quantity recirculated to an intake tube, further that disposed in a discharge of said injection pump is a pressure-controlled ventilation valve, which communicates with a heat exchanger, said valve arranged to be controlled by pump interior pressure (ppi) and adjusted such that its pressure effecting the opening (po) is greater than the maximum interior pressure of said injection pump in an exhaust gas test range.
Specification