Methods for controlling fuel supply systems
By increasing the pressure in the fuel supply system to activate and re-inspect the pressure relief valve, the problem of difficult-to-identify pressure relief valve leaks is solved. This enables the self-repair of the pressure relief valve's sealing performance and accurate location of leaks in other components, thereby improving system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2017-05-10
- Publication Date
- 2026-05-26
AI Technical Summary
In existing fuel supply systems, leaks in pressure relief valves are difficult to accurately identify and distinguish, which may cause fuel to leak into the combustion chamber or other parts of the system, affecting engine operation. Existing technologies are unable to effectively eliminate this type of leakage.
When a leak is detected, the pressure relief valve is activated by increasing the pressure in the fuel supply system. The leak is then rechecked for further leakage. If the pressure relief valve has a sealing problem, the leak is eliminated by repeatedly opening and closing it. Otherwise, the leak is attributed to other components.
Effectively distinguish between pressure relief valve leakage and leakage from other components, ensure the pressure relief valve's sealing performance, avoid unnecessary fault diagnosis and maintenance, and improve system reliability.
Smart Images
Figure CN107448311B_ABST