Performing a diagnostic on a hydraulic system while the vehicle is operating
AssigneeRobert Bosch GmbH
InventorsLabiba Quaiyum, Qingyuan Li, Wenguang Zhou, Reimar Fuchs
Life of this patent
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Abstract
A system and method for performing a diagnostic on a hydraulic system in a vehicle while the vehicle is at a standstill. The method includes, by means of an electronic processor, moving a plunger at a constant rate, determining a position of the plunger, receiving a pressure of the hydraulic system from a pressure sensor, comparing the determined position and the measured pressure to a position versus pressure graph, and sending a diagnostic to a diagnostic indicator.
Claims18
A system for performing a diagnostic on a hydraulic system in a vehicle when the vehicle is at a standstill, the system comprising:
- a plunger coupled to the hydraulic system of the vehicle;
- a pressure sensor;
- and
- an electronic controller, configured to generate a signal to move the plunger,
- receive, from the pressure sensor, a pressure of the hydraulic system,
- determine a position of the plunger,
- compare the position of the plunger and the pressure to a position versus pressure curve, and
- send at least one diagnostic indication to at least one diagnostic indicator.
A method for performing a diagnostic on a hydraulic system in a vehicle when the vehicle is at a standstill, the method comprising:
- generating, with an electronic controller, a signal to move a plunger fluidly connected to the hydraulic system,
- receiving, from a pressure sensor, a pressure of the hydraulic system,
- determining a position of the plunger,
- comparing, in the electronic controller, the position of the plunger and the pressure to a position versus pressure curve, and
- sending, from the electronic controller, at least one diagnostic indication to at least one diagnostic indicator.
Dependencies are inferred from the claim text.