Electric inertia simulation light vehicle brake Inertia tester

 

1. Applications:

The equipment is mainly used for the test of the comprehensive performance of the brake of the light vehicle and the passenger car, and the friction and wear performance test of the disc brake or drum brake.

 

2. Principle:

Electric inertia simulation test-bed braking by the brake test bench, industrial control computer control DAC (Data Acquisition & Controlling) system, DC electric drive system, electric control and test system, hydraulic brake servo control (Servo Control) six parts of the system, cooling and dust removal system.

 

Fig. 1 Structure of electric inertia brake test stand

When the brake performance is detected, the brake is installed on the test bench. When the speed reaches the simulation speed, brake caliper, the friction between the brake caliper and the friction disc, the brake torque, forcing the spindle stop, measuring deceleration parameters such as brake torque, brake during braking. From the moment of inertia of the electric inertia system with fixed small flywheel and computer control motor simulation, namely the use of fixed small flywheel inertial properties (analog part is mainly used to control the motor at low speed when the compensation performance, using computer control motor simulation) the rest used performance (during the braking test, the flywheel shaft and the motor shaft does not disengage).

The electric inertia system is the core part of the measurement and control system of the brake test bench, electric inertia technology used in the system to simulate mechanical motor inertia, the implementation of this technique will have the following effect on brake tester:

(1) Reduce the size and weight of the test stand;

(2) To realize the stepless regulation of the simulated load inertia;

(3) The function of the system is greatly improved, and the loading precision and automation of the equipment are improved;

(4) The theoretical basis and control method of electric inertia system, the design has reference research and system control method of all kinds of test system of large inertia, such as vehicle bench test system, synchronizer test, vehicle drum tester etc..

(5) The electric inertia simulation of mechanical inertia characteristics, control using only one basic inertia compensation speed, inertia simulation test can be continuous; mechanical operation, avoid inertia wheel manual assembly work, simple operation, convenient use and maintenance.

Speed detection using OMRON encoder, the speed detection accuracy; application of Z4 series DC motor using SIEMENS technology, governor of British European company 590+ four quadrant speed, stable speed, speed change fast, can achieve rapid changes in speed, accurate simulation of inertia.

Pressure control using Schneider PVM pneumatic servo valve to adjust the pressure of the gas path, through the 1:20 cylinder into a brake fluid brake pressure, pressure relief, fast speed, can achieve rapid linear pressure relief.

Through the United States imports and exports sensor to detect friction, simple structure, high precision, and stable quality.

 

3. The test object:

Disc / drum brake assembly or brake pads for light trucks, mini cars, and passenger cars of 5 tons or less.

 

4. The basic function:

4.1 All functions of the inertia bench test machine;

4.2 All test functions with KRAUSS tester;

4.3 With constant torque (constant output) test function;

4.4 With constant pressure (constant input) test function;

4.5 With static torque test function (select item);

4.6 With the hand brake test function (options);

4.7 Comprehensive computer control, testing, printing curve and report;

4.8 Software can be fully prepared by a variety of standards, the implementation of China, Europe, the United States, Japan and other test standards

 

5. Executable representative standards:

P-VW3211, P-VW3212, VW-TL110, SAE J212, JB 3980, JB 4200,

JASO C406, ISO 11157, AK Master, AK1, AK2, TL-110-2.1/2.2,

QC/T 564-2008, QC/T 237-1997.

 

6. The main technical parameters:

Motor power: (DC) 200 KW, armature current 455A; 1500/2400 r/min;

Spindle speed: 30 ~ 2600 r/min;

Allowable torque: inertia brake (max) 5000 N.m; continuous friction drag 840 N.m

Static moment: (max) 2500 N.m

Hand brake pull: 0 ~ 3500 N, 50 mm travel;

Slide part: brake disc / drum diameter namely the above 400 mm, namely the above 500 mm width;

Maximum axial load of 5000 N, maximum radial loading of 40000 N;

Brake pressure: gas pressure - constant pressure or constant torque 1 ~ 20MPa

Pressure gradient: (max) 100MPa/sec

Temperature measurement: room temperature to 800 DEG C

Cooling system: blast volume: 4200 m3/h (at wind speed of 30 m/s) (analog set),

Air volume: 4900 m3/h;

Speed control device: (model European 590+ four quadrant) 440V; 500A

Computer systems: mainstream brands (Dell or Lenovo) computers

Color laser printer: HP (A4)

Dimensions: Main Engine: 4500 x 1500 x 2500 (mm), weight: about 6,000 Kgs