Fuel injection system with pressure-controlled bleed function
First Claim
1. A high-pressure fuel injection system for pressurizing fuel and delivering it fur injection into an internal combustion engine, the system comprising a high-pressure fuel injection pump with an inlet, at least one plunger, a suction channel positioned between the inlet and plunger, the system further comprising a return port, and a bleed valve connectively arranged at the suction channel of the high-pressure fuel injection pump, wherein a selector valve is provided between the inlet and return port, and an inlet metering valve is connectively arranged between the inlet and the suction channel, the bleed valve being connectively arranged between the inlet metering valve and the plunger, an outlet of the selector valve being in fluid communication with an outlet of the bleed valve.
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Abstract
A fuel injection system with a high-pressure fuel injection pomp is provided for pressurizing fuel and delivering it for injection into an internal combustion engine. The system and the high-pressure fuel injection pump have an inlet, a return port, at least one plunger, a suction, channel positioned between the inlet and plunger, and a bleed valve connectively arranged at the suction channel of the high-pressure fuel injection pump, A selector valve is provided between the inlet, and return port.
38 Citations
15 Claims
- 1. A high-pressure fuel injection system for pressurizing fuel and delivering it fur injection into an internal combustion engine, the system comprising a high-pressure fuel injection pump with an inlet, at least one plunger, a suction channel positioned between the inlet and plunger, the system further comprising a return port, and a bleed valve connectively arranged at the suction channel of the high-pressure fuel injection pump, wherein a selector valve is provided between the inlet and return port, and an inlet metering valve is connectively arranged between the inlet and the suction channel, the bleed valve being connectively arranged between the inlet metering valve and the plunger, an outlet of the selector valve being in fluid communication with an outlet of the bleed valve.
Specification