Patent ID: 11912092
Assignee: DRIV AUTOMOTIVE INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 10:
11. A leak checking method for a suspension system of a vehicle, the leak checking method comprising:
selectively setting a present state of a leak check for the suspension system to a first state;
determining first target open and closed states for valves of the suspension system based on the present state being set to the first state;
selectively opening and closing the valves of the suspension system according to the first target open and closed states, respectively;
when the valves are in the first target open and closed states, respectively, selectively operating an electric pump of the suspension system in a first direction to increase hydraulic fluid pressure in a first portion of the suspension system;
selectively diagnosing a leak in a first one of the valves associated with the first state based on a first pressure in the first portion of the suspension system while the valves are open and closed according to the first target open and closed states for the first state;
selectively setting the present state of the leak check for the suspension system to a second state;
determining second target open and closed states for the valves of the suspension system based on the present state being set to the second state and to open and close the valves of the suspension system according to the second target open and closed states, respectively,
wherein the second target open and closed states are different than the first target open and closed states;
when the valves are in the second target open and closed states, respectively, selectively operating the electric pump of the suspension system in the first direction to increase hydraulic fluid pressure in a second portion of the suspension system; and
selectively diagnosing a leak in a second one of the valves associated with the second state based on a second pressure in the second portion of the suspension system while the valves are open and closed according to the second target open and closed states for the second state,
wherein the second portion is different the first portion.