System and method for detecting brake fluid leakage
AssigneeHl Mando Corporation
InventorJisoo Kim
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a system and method of detecting a brake fluid leakage for detecting whether a brake fluid of a vehicle is leaking and a position of the leakage. The method of detecting a brake fluid leakage according to an embodiment of the present disclosure includes detecting a level of the brake fluid stored, detecting whether the vehicle is braking, and diagnosing whether the brake fluid is leaking and the position of the leakage when the level of the brake fluid falls below a reference level and a state of the vehicle is detected as a non-braking state.
Claims20
A system for detecting a brake fluid leakage in a vehicle and a position of the leakage, the system comprising:
- a storage tank configured to store brake fluid;
- a level sensor configured to detect a level of the brake fluid stored in the storage tank;
- a braking state detection means configured to detect whether the vehicle is braking;
- a first brake circuit provided to brake some of a plurality of wheels, and comprising a first wheel injection valve to control an inflow of the brake fluid;
- a second brake circuit provided to brake wheels of the plurality of wheels, and comprising a second wheel injection valve to control an inflow of the brake fluid;
- and
- a control device configured to detect whether the brake fluid is leaking and the position of the leakage by closing the first wheel injection valve and generating a predetermined brake pressure in the second brake circuit to monitor an amount of outflow of the brake fluid, or by closing the second wheel injection valve and generating a predetermined brake pressure in the first brake circuit to monitor the amount of outflow of the brake fluid when the level of the brake fluid stored in the storage tank falls below a reference level, and a state of the vehicle is detected as a non-braking state.
A method of detecting a brake fluid leakage comprising:
- detecting a level of brake fluid stored;
- detecting whether a vehicle is braking;
- and
- diagnosing whether the brake fluid is leaking and a position of the leakage when the level of the brake fluid falls below a reference level and a state of the vehicle is detected to be a non-braking state,
- wherein the diagnosing of whether the brake fluid is leaking and the position of the leakage comprises:
- monitoring an amount of outflow of the brake fluid by shutting off a supply of the brake fluid to a first brake circuit for braking some of wheels of a plurality of wheels, and generating a predetermined brake pressure in the second brake circuit for braking the other wheels of the plurality of wheels;
- monitoring the amount of outflow of the brake fluid by shutting off a supply of the brake fluid to the second brake circuit for braking the other wheels of the plurality of wheels, and generating a predetermined brake pressure in the first brake circuit for braking some of wheels of the plurality of wheels;
- and
- diagnosing whether the brake fluid is leaking and the position of the leakage by analyzing results of the monitoring of the amount of outflow of the brake fluid.
Dependencies are inferred from the claim text.