초록 ▼

A tank intended for an electrohydraulic braking system comprises, according to the present invention, a first chamber (7) for the supply of a primary hydraulic circuit of a master cylinder with brake fluid, a second chamber (9) for the supply of a secondary hydraulic circuit of the master cylinder (

A tank intended for an electrohydraulic braking system comprises, according to the present invention, a first chamber (7) for the supply of a primary hydraulic circuit of a master cylinder with brake fluid, a second chamber (9) for the supply of a secondary hydraulic circuit of the master cylinder (not shown) with brake fluid, a third chamber (11) for the supply of a hydraulic pump with brake fluid, and a fourth chamber (13), a measuring one, which accommodates a detection device, indicating when the brake-fluid level inside the tank is too low. The tank has a flow path for the interconnection of the first chamber (7), the second chamber ( 9) and the third chamber (11) when the hydraulic-fluid level is higher than a safety level, and for the fluid-tight separation of said chambers when the hydraulic-fluid level is lower than the safety level.

대표청구항 ▼

What is claimed is: 1. A brake-fluid tank for a braking system, comprising a casing, defining an inner space (3), a filling port, at least one outlet port, a first supply chamber (7) for a primary hydraulic circuit, a second supply chamber (9) for a secondary hydraulic circuit, a level sensor for t

What is claimed is: 1. A brake-fluid tank for a braking system, comprising a casing, defining an inner space (3), a filling port, at least one outlet port, a first supply chamber (7) for a primary hydraulic circuit, a second supply chamber (9) for a secondary hydraulic circuit, a level sensor for the hydraulic fluid contained in said tank (R) , when such level is lower than a minimum level (m), characterised in that said tank also comprises a third supply chamber (11) for a hydraulic pump (23), and means for the interconnection of the first, second and third chambers when the hydraulic-fluid level is higher than a safety level (s), and for the fluid-tight separation of said chambers when the hydraulic-fluid level is lower than the safety level (s) , the safety level (s) being lower than or equal to the minimum level (m) and a fourth chamber (13) for accommodating the level sensor, said fourth chamber (13) being situated substantially centrally in said tank (R) and separated from the first, second and third chambers (7 , 9, 11) by a partition wall (15) that is provided with passages (14) connecting the first, second and third chambers (7, 9, 11) with said fourth chamber (13), said passages (14) being situated between the safety level (s) and the minimum level (m). 2. The tank according to claim 1, characterised in that the fourth chamber (13) is surrounded with an annular passage ( 17) communicating with the chambers (7, 9, 11). 3. The tank according to claim 2, characterised in that the means (37, 36), intended for the interconnection of the first, second and third chambers when the hydraulic-fluid level is higher than the safety level (s), and for the fluid-tight separation of said chambers when the hydraulic-fluid level is tower than the safety level (s) , comprises dividing walls (37) extending, in a fluid-tight manner, from the bottom wall (8) towards the top wall (4) of the tank (R), to a height which is smaller than the distance between the bottom wall (8) of the tank (R) and the top wall ( 4) of the tank (R), said dividing walls being provided between the first, second and third chambers (7, 9, 11) and forming, between their upper ends (38) and the top wall of the tank, interconnecting ports (36) for said first, second and third chambers (7, 9, 11). 4. The tank according to claim 3, characterised in that the dividing walls (37) extend between the first, second and third chambers (7, 9, 11) and the annular passage ( 17). 5. The tank according to claim 4, characterised in that the third chamber (11) comprises a brake-fluid reinjection port, which is provided in the top wall (4) of the tank (R) and intended to be connected with a brake-fluid return line from a braking circuit. 6. The tank according to claim 5 for use in an electrohydraulic braking system comprising a braking member, a brake pedal, detection means, a computer (21) outputting a command for the hydraulic pump (23) to deliver brake-fluid to at least one brake (25) mounted at a wheel of the vehicle, on the detection, by the detection means, of the driver's action on the braking member, and a master cylinder connected to the brake (25).