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

Claim 0:
1. A leak checking system for a suspension system of a vehicle, the leak checking system comprising:
a state module configured to selectively set a present state of a leak check for the suspension system to a first state;
a valve control module configured to determine first target open and closed states for valves of the suspension system based on the present state being set to the first state and to open and close the valves of the suspension system according to the first target open and closed states, respectively;
a pump control module configured to, when the valves are in the first target open and closed states, respectively, selectively operate an electric pump of the suspension system in a first direction to increase hydraulic fluid pressure in a first portion of the suspension system;
a leak module configured to selectively diagnose 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;
wherein:
the state module is further configured to selectively set the present state of the leak check for the suspension system to a second state;
the valve control module is further configured to determine 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,
the second target open and closed states are different than the first target open and closed states;
the pump control module is further configured to, when the valves are in the second target open and closed states, respectively, selectively operate the electric pump of the suspension system in the first direction to increase hydraulic fluid pressure in a second portion of the suspension system;
the leak module selectively diagnose 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; and
the second portion is different the first portion.