A performance test bench for the hydraulic unit of an automotive electronic braking system

Abstract

The present invention discloses a performance test bench for the hydraulic unit of an automotive electronic braking system, which includes an experimental bench frame. The interior of the experimental bench frame includes a profile frame, a pedal simulation module, and a clamping module. Inside the profile frame, there is an operation area, a vehicle braking system, and a hydraulic test system. Inside the operation area, there is an operation panel, a manual ball valve, an oil pot, and an oil nozzle flange. Inside the vehicle braking system, there are a left front wheel cylinder, a right front wheel cylinder, a left rear wheel cylinder, a right rear wheel cylinder, a front brake disc, a rear brake disc, a front bracket, and a rear bracket. Through the setting of the experimental bench frame, the present invention can be used for the hydraulic characteristic test during the R & D process of IBC products, and can achieve the quick docking and sealing of the HCU test oil circuit of IBC according to the specific structural characteristics of IBC and the requirements of the performance indicators to be tested, realize the test conditions of constant pressure and various pressure increase and decrease rates, and test the loop pressure characteristics in real time, so as to evaluate the sealing, pressure resistance, and loop pressure characteristics of HCU.

Description

Technical Field

[0001] The present invention relates to the field of automobile manufacturing, and specifically to a performance test bench for the hydraulic unit of an automotive electronic braking system. Background Art

[0002] With the development of automotive technology, the electronic booster (TBS), electronic stability control module (ESC), and master cylinder are highly integrated to form a very compact and small electronic hydraulic braking system (IBC). The actuator of the IBC system is a highly integrated hydraulic control unit (HCU), and various control functions of the IBC are achieved through the HCU. Therefore, the performance of the HCU is crucial for the realization of the IBC functions. Its performance includes characteristics such as the sealing characteristics, pressure resistance characteristics, and pressure increasing and decreasing rate characteristics of four circuits. To meet the test requirements during the R & D stage of IBC products, a hydraulic unit test bench needs to be designed. Summary of the Invention

[0003] The purpose of the present invention is to provide a performance test bench for the hydraulic unit of an automotive electronic braking system to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: It includes an experimental bench frame. The interior of the experimental bench frame includes a profile frame, a pedal simulation module, and a clamping module. The interior of the profile frame is provided with an operation area, a vehicle braking system, and a hydraulic test system. The interior of the operation area is provided with an operation board, manual ball valves, an oil pot, and an oil nozzle flange. The interior of the vehicle braking system is provided with a left front wheel cylinder, a right front wheel cylinder, a left rear wheel cylinder, a right rear wheel cylinder, a front brake disc, a rear brake disc, a front bracket, and a rear bracket. The interior of the hydraulic test system is provided with a first pressure transmitter, a second pressure transmitter, a third pressure transmitter, a fourth pressure transmitter, a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter, and a circulation pump. The interior of the clamping module is provided with an oil leakage module, an ABS bracket, and an IBC bracket. The interior of the manual ball valves is provided with a first ball valve, a second ball valve, a third ball valve, and a fourth ball valve. The interior of the oil nozzle flange is provided with a first flange, a second flange, a third flange, and a fourth flange.

[0005] Preferably, the output ends of the first flowmeter, the second flowmeter, the third flowmeter, and the fourth flowmeter are respectively fixedly and communicatively connected to the input ends of the first pressure transmitter, the second pressure transmitter, the third pressure transmitter, and the fourth pressure transmitter in one-to-one correspondence. The output ends of the left front wheel cylinder, the right front wheel cylinder, the left rear wheel cylinder, and the right rear wheel cylinder are respectively fixedly and communicatively connected to the input ends of the first flowmeter, the second flowmeter, the third flowmeter, and the fourth flowmeter in one-to-one correspondence. The output end of the manual ball valve is fixedly communicatively connected to the input ends of the left front wheel cylinder, the right front wheel cylinder, the left rear wheel cylinder, and the right rear wheel cylinder. The output ends of the first pressure transmitter, the second pressure transmitter, the third pressure transmitter, and the fourth pressure transmitter are fixedly communicatively connected to the input end of the nozzle flange. The output end of the nozzle flange is fixedly communicatively connected to the input end of the oil pot. The output end of the oil pot is fixedly communicatively connected to the input end of the circulation pump. The output end of the circulation pump is fixedly communicatively connected to the input end of the manual ball valve. The output ends of the first ball valve, the second ball valve, the third ball valve, and the fourth ball valve are respectively fixedly communicatively connected to the input ends of the left front wheel cylinder, the right front wheel cylinder, the left rear wheel cylinder, and the right rear wheel cylinder. The output ends of the left front wheel cylinder, the right front wheel cylinder, the left rear wheel cylinder, and the right rear wheel cylinder are respectively fixedly communicatively connected to the input ends of the first flowmeter, the second flowmeter, the third flowmeter, and the fourth flowmeter.

[0006] Preferably, the fixed end of the left front wheel cylinder and the fixed end of the right front wheel cylinder are fixedly connected to the front brake disc through a front bracket. The fixed ends of the left rear wheel cylinder and the right rear wheel cylinder are fixedly connected to the rear brake disc through a rear bracket.

[0007] Preferably, the first pressure transmitter, the second pressure transmitter, the third pressure transmitter, and the fourth pressure transmitter are identical in shape and size. The first flowmeter, the second flowmeter, the third flowmeter, and the fourth flowmeter are identical in shape and size. The left front wheel cylinder, the right front wheel cylinder, the left rear wheel cylinder, and the right rear wheel cylinder are identical in shape and size.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] Through the setting of the test bench frame, the present invention can be used for the hydraulic characteristic test during the R & D process of IBC products. It can achieve the rapid docking and sealing of the HCU test oil circuit of IBC according to the specific structural characteristics of IBC and the requirements of the performance indicators to be tested, realize the constant pressure and various pressure increase and decrease rate test conditions, and test the pressure characteristics of the loop in real time, so as to evaluate the sealing, pressure resistance, and loop pressure characteristics of HCU.

[0010] Meanwhile, through the setting of the test bench frame, the present invention can be customized according to the performance test requirements of IBC. Its operation for running test is simple and rapid, which improves the test efficiency, realizes the low test cost, and achieves the purpose of compact structure and high space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the overall structural system block diagram of a hydraulic unit performance test bench for an automotive electronic brake system according to the present invention;

[0012] Figure 2 This is the structural schematic diagram of a pedal simulation module in a hydraulic unit performance test bench for an automotive electronic brake system according to the present invention;

[0013] Figure 3 This is the hydraulic circuit diagram of a hydraulic unit performance test bench for an automotive electronic brake system according to the present invention.

[0014] In the figure: 1. Test bench frame; 11. Profile frame; 2. Operation area; 21. Operation board; 22. Manual ball valve; 221. First ball valve; 222. Second ball valve; 223. Third ball valve; 224. Fourth ball valve; 23. Oil pot; 24. Oil nozzle flange; 241. First flange; 242. Second flange; 243. Third flange; 244. Fourth flange; 3. Pedal simulation module; 4. Clamping module; 41. Oil leakage module; 42. ABS bracket; 43. IBC bracket; 5. Vehicle brake system; 51. Left front wheel cylinder; 52. Right front wheel cylinder; 53. Left rear wheel cylinder; 54. Right rear wheel cylinder; 55. Front brake disc; 56. Rear brake disc; 57. Front bracket; 58. Rear bracket; 6. Hydraulic test system; 61. First pressure transmitter; 62. Second pressure transmitter; 63. Third pressure transmitter; 64. Fourth pressure transmitter; 65. First flowmeter; 66. Second flowmeter; 67. Third flowmeter; 68. Fourth flowmeter; 69. Circulation pump. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figure 1 , the present invention provides a technical solution: including a test bench frame 1, the outer frame of the test bench frame 1 is spliced by a profile frame 11 to form an overall installation frame. The bottom surface of the profile frame 11 is fixedly installed with rollers for transportation. The profile frame 11 is spliced and built with 40 aluminum profiles, and a pedal simulation module 3 communicated with the oil circuit of the hydraulic test system 6 is arranged inside the profile frame 11.

[0017] Please refer to Figure 1, the operation area 2 is arranged inside the profile frame 11 and is composed of an operation board 21, a manual ball valve 22, an oil pot 23, and an oil nozzle flange 24. The rear oil ports of the manual ball valve 22 and the oil nozzle flange 24, and the upper port of the oil pot 23 are communicated with a hydraulic test system 6 for testing the pressure increase and decrease rate of the oil circuit through the oil circuit. The front oil port of the oil nozzle flange 24 and the oil outlet of the oil pot 23 are connected to the workpiece to be tested through pipelines to form a complete test circuit. The first ball valve 221, the second ball valve 222, the third ball valve 223, and the fourth ball valve 224 respectively control the opening and closing of the oil circuits returning from the left front wheel cylinder 51, the right front wheel cylinder 52, the left rear wheel cylinder 53, and the right rear wheel cylinder 54, so as to realize the pressure relief operation of the left front wheel cylinder 51, the right front wheel cylinder 52, the left rear wheel cylinder 53, and the right rear wheel cylinder 54 after the test is completed.

[0018] Please refer to Figure 1 , the clamping module 4 is composed of a leakage module 41, an ABS bracket 42, and an IBC bracket 43 combined.

[0019] Please refer to Figure 1 , the vehicle braking system 5 is composed of a left front wheel cylinder 51, a right front wheel cylinder 52, a left rear wheel cylinder 53, a right rear wheel cylinder 54, a front brake disc 55, a rear brake disc 56, a front bracket 57, and a rear bracket 58 combined. The left front wheel cylinder 51 and the right front wheel cylinder 52 are fixed on the front brake disc 55 through the front bracket 57. The left rear wheel cylinder 53 and the right rear wheel cylinder 54 are fixed on the rear brake disc 56 through the rear bracket 58. The front bracket 57 and the rear bracket 58 are fixed on the profile frame 11, playing a supporting role.

[0020] Please refer to Figure 1 and Figure 3, on the oil circuit of the hydraulic test system 6, there are arranged a first pressure transmitter 61, a second pressure transmitter 62, a third pressure transmitter 63, a fourth pressure transmitter 64, a first flowmeter 65, a second flowmeter 66, a third flowmeter 67, a fourth flowmeter 68 and a circulation pump 69. The first flowmeter 65, the second flowmeter 66, the third flowmeter 67 and the fourth flowmeter 68 are respectively connected to the rear oil ports of the first flange 241, the second flange 242, the third flange 243 and the fourth flange 244 through pipelines. The first pressure transmitter 61, the second pressure transmitter 62, the third pressure transmitter 63 and the fourth pressure transmitter 64 are respectively connected to the first flowmeter 65, the second flowmeter 66, the third flowmeter 67 and the fourth flowmeter 68. The left front wheel cylinder 51, the right front wheel cylinder 52, the left rear wheel cylinder 53 and the right rear wheel cylinder 54 are respectively connected to the first flowmeter 65, the second flowmeter 66, the third flowmeter 67 and the fourth flowmeter 68 to form four test circuits, and the pressures and flows of the left front wheel cylinder 51, the right front wheel cylinder 52, the left rear wheel cylinder 53 and the right rear wheel cylinder 54 are measured. The left front wheel cylinder 51, the right front wheel cylinder 52, the left rear wheel cylinder 53 and the right rear wheel cylinder 54 are respectively connected to the first ball valve 221, the second ball valve 222, the third ball valve 223 and the fourth ball valve 224 to control the pressure relief of a single test circuit. The rear oil circuits of the first ball valve 221, the second ball valve 222, the third ball valve 223 and the fourth ball valve 224 are aggregated and connected to the circulation pump 69, and the circulation pump 69 is connected to the oil pot 23 for loop exhaust treatment.

[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automotive electronic brake system hydraulic unit performance test bench, comprising an experimental bench frame (1). Characterized in that: The interior of the test bench frame (1) includes a profile frame (11), a pedal simulation module (3) and a clamping module (4). The interior of the profile frame (11) is provided with an operation area (2), a vehicle braking system (5) and a hydraulic testing system (6). The interior of the operation area (2) is provided with an operation board (21), a manual ball valve (22), an oil pot (23) and an oil nozzle flange (24). The interior of the vehicle braking system (5) is provided with a left front wheel cylinder (51), a right front wheel cylinder (52), a left rear wheel cylinder (53), a right rear wheel cylinder (54), a front brake disc (55), a rear brake disc (56), a front bracket (57) and a rear bracket (58). The interior of the hydraulic testing system (6) is provided with a first pressure transmitter (61), a second pressure transmitter (62), a third pressure transmitter (63), a fourth pressure transmitter (64), a first flowmeter (65), a second flowmeter (66), a third flowmeter (67), a fourth flowmeter (68) and a circulation pump (69). The interior of the clamping module (4) is provided with an oil leakage module (41), an ABS bracket (42) and an IBC bracket (43). The interior of the manual ball valve (22) is provided with a first ball valve (221), a second ball valve (222), a third ball valve (223) and a fourth ball valve (224). The interior of the oil nozzle flange (24) is provided with a first flange (241), a second flange (242), a third flange (243) and a fourth flange (244). The output ends of the first flowmeter (65), the second flowmeter (66), the third flowmeter (67) and the fourth flowmeter (68) are respectively fixedly and communicatively connected to the input ends of the first pressure transmitter (61), the second pressure transmitter (62), the third pressure transmitter (63) and the fourth pressure transmitter (64) in one-to-one correspondence. The output ends of the left front wheel cylinder (51), the right front wheel cylinder (52), the left rear wheel cylinder (53) and the right rear wheel cylinder (54) are respectively fixedly and communicatively connected to the input ends of the first flowmeter (65), the second flowmeter (66), the third flowmeter (67) and the fourth flowmeter (68) in one-to-one correspondence. The output end of the manual ball valve (22) is fixedly and communicatively connected to the input ends of the left front wheel cylinder (51), the right front wheel cylinder (52), the left rear wheel cylinder (53) and the right rear wheel cylinder (54). The output ends of the first pressure transmitter (61), the second pressure transmitter (62), the third pressure transmitter (63) and the fourth pressure transmitter (64) are fixedly and communicatively connected to the input end of the oil nozzle flange (24). The output end of the oil nozzle flange (24) is fixedly and communicatively connected to the input end of the oil pot (23). The output end of the oil pot (23) is fixedly and communicatively connected to the input end of the circulation pump (69). The output end of the circulation pump (69) is fixedly and communicatively connected to the input end of the manual ball valve (22). The output ends of the first ball valve (221), the second ball valve (222), the third ball valve (223) and the fourth ball valve (224) are respectively fixedly and communicatively connected to the input ends of the left front wheel cylinder (51), the right front wheel cylinder (52), the left rear wheel cylinder (53) and the right rear wheel cylinder (54).The output ends of the left front wheel cylinder (51), right front wheel cylinder (52), left rear wheel cylinder (53) and right rear wheel cylinder (54) are fixedly communicated with the input ends of a first flowmeter (65), a second flowmeter (66), a third flowmeter (67) and a fourth flowmeter (68) respectively.

2. The automotive electronic brake system hydraulic unit performance test bench according to claim 1. Characterized in that: The fixed end of the left front wheel cylinder (51) and the fixed end of the right front wheel cylinder (52) are fixedly connected to the front brake disc (55) through a front bracket (57), and the fixed end of the left rear wheel cylinder (53) and the fixed end of the right rear wheel cylinder (54) are fixedly connected to the rear brake disc (56) through a rear bracket (58).

3. The automotive electronic brake system hydraulic unit performance test bench according to claim 1. Characterized in that: The first pressure transmitter (61), the second pressure transmitter (62), the third pressure transmitter (63) and the fourth pressure transmitter (64) are identical in shape and size, the first flowmeter (65), the second flowmeter (66), the third flowmeter (67) and the fourth flowmeter (68) are identical in shape and size, and the left front wheel cylinder (51), the right front wheel cylinder (52), the left rear wheel cylinder (53) and the right rear wheel cylinder (54) are identical in shape and size.

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