High Efficiency Delivery Valve 096420-0550 for Toyota Land Cruiser Prado 1HZ 1HZ-T 1KZ-TE 1PZ

Cutting off fuel supply
When the injection pump stops supplying fuel, the outlet valve closes quickly under the action of spring force to prevent the fuel in the high-pressure oil pipe from flowing back to the injection pump, so that the fuel supply is cut off immediately to ensure the timeliness and accuracy of fuel injection and avoid dripping after the end of fuel injection, thus making the combustion process of the engine more stable and efficient.

Stabilize fuel pressure
When the outlet valve is closed, it can isolate the high-pressure fuel pipe from the plunger chamber of the injection pump and keep the fuel pressure in the high-pressure fuel pipe stable. This helps to prevent excessive pressure fluctuations in the high-pressure fuel line due to plunger return during the injection process, and ensures that the fuel is injected into the engine combustion chamber at a stable pressure, resulting in a more even fuel injection and better atomization, which is conducive to improving the engine's power performance and fuel economy.

Control of fuel injection characteristics
The structure and operating characteristics of the outlet valve have an important impact on the beginning and end of the injection moment and injection rate. For example, the pressure-reducing ring belt of the outlet valve can quickly reduce the pressure in the high-pressure oil pipe at the end of the injection, so that the injection can be stopped quickly, the duration of the injection and the injection pattern can be controlled, so that the injection process can better adapt to the needs of different engine conditions, optimize the combustion process of the engine, and reduce the emission of pollutants.

Prevent backflow of fuel
The outlet valve has the function of a one-way valve, which only allows the fuel to flow from the injection pump to the high-pressure fuel line, and does not allow the fuel to flow in the opposite direction. This can prevent the fuel in the high-pressure fuel pipe from flowing back to the injection pump due to gravity or other reasons when the engine stops working or the injection pump is not working, ensure the correct direction of fuel flow in the fuel system, maintain the normal working order of the fuel system, and prepare for the next startup and injection.