1、日本汽车标准_JASO C406-2000 英文版 乘用车-行车制动系统试验规程_JAPANESE AUTOMOBILE STANDARD JAS0 C406: 2000 Passenger car - Braking device - Dynamometer test procedures 1. Scope This Standard specifies the test procedures for the dynamometer performance of normally operated service brake devices used in passenger cars. i
2、ncluded in this Standard. Test procedures for two-wheeled vehicles are not 2. Applicable Publications The following publication forms a part of this Standard to the extent specified herein. of all publications shall apply. The latest edition JIS DO210 General Rules of Brake Test Methods for Automobi
3、les and Motorcycles 3. Definitions Definitions of major terms used herein are specified in Item 2 of JIS D0210, and include such terms as initial braking speed, braking interval, and initial brake temperature. 4. Test Conditions 4.1 Vehicle Classification Test vehicles are classified into the follow
4、ing categories by nominal maximum speed as specified below in accordance with the provisions of JIS D0210. PI: Exceeding 140 km/h P2: Exceeding 110 km/h up to 140 km/h P3: Exceeding 90 km/h up to 110 km/h P4: 90 km/h or less 4.2 Condition of Brake Parts The condition of each part of brake devices us
5、ed in testing shall conform to Item 4.3 of JIS DO210 (Condition of Brake Parts). a) Inertia Inertia shall be determined by the calculation equation specified in Item 7 of JIS DO210 (Calculation Equation). procedures and test equipment such as dual or single dynamometers. 1) 2) vehicle load (dual dyn
6、amometer) divided by the ratio of the front and rear wheel braking forces at a braking deceleration of 4.5 m/s2 Test loads, however, shall be as follows to accommodate specific test Front-and-rear combination tests using a dual dynamometer: 1/2 of the total vehicle load Right-left combination tests:
7、 1/2 of the total vehicle load (single dynamometer) or total 4.3 Temperature Measurement A thermocouple shall be installed on the fixed side as specified in Item 6 (Temperature Measurement) of JIS D0210, as a rule. Remarks: 4.4. Cooling Wind Cooling wind shall be at room temperature, shall be applie
8、d at a velocity of 11 m/s, as a rule, and shall be directed to blow uniformly and continuously against the projected surface of the brake device. Remarks: 4.5 Temperature Adjustment When adjustments are required to achieve a specified initial brake temperature refer to Item 5.2.d Burnish conditions.
9、 Any deviation from the above shall be noted in the test record. Any deviation from the above shall be noted in the test record. 1 JAS0 C406: 2000 5. Test Procedures 5.1 Preparation The brake device shall be inspected to confirm that there are no abnormalities before being installed on the test equi
10、pment. the friction material. in order to assure accurate measurement of wear on the friction material. 10 points, 5 points on each side. of the drum or disc shall be clean. or pad. drum or disc shall be recorded. Remarks: 5.2 Test Items and Sequence Test items and sequence of the test are specified
11、 below and in Attached Table 1. The vehicle shall be brought to a complete stop with each brake application. In vehicles where the specified braking temperature cannot be readily achieved, the initial brake temperature may be adjusted from 80oC to 60oC, or from 1200C to 80oC, respectively. Any forei
12、gn matter including grease and paint shall be removed from the surface of Specific measuring points on the pad and lining shall be determined prior to testing Linings shall be measured at The friction surface A thermocouple shall be installed at a specified location on the lining Pads shall be measu
13、red at 6 to 8 points, as a rule. The brake device shall be installed and centered on the test equipment. Any deflection of the Any deviation from the above shall be noted in the test record. a) Initial measurement b) Pre burnish check Lining or pad thickness and other brake part dimensions shall be
14、measured and recorded as required. Initial braking speed: 50 km/h Braking deceleration: 3.0 m/s2 Initial brake temperature: 80oC max. - front 60oC max. - rear 10 Rep et it i on s: c) First (pre burnish) effectiveness test Initial braking speed: 50 km/h & 100 km/h - PI & P2 vehicles 50 km/h & 80 km/h
15、 - P3 vehicles 50 km/h & 65 km/h - P4 vehicles 1.0 m/s2 to 10.0 m/s2 8OoC - front 6OoC - rear Repeat until measurements for 6 or more points are as equal as possible, within total deceleration range Braking deceleration: Initial brake temperature: Rep et it i on s: Remarks: 1- The lower values for i
16、nitial braking speed and deceleration shall be applied first, as a rule, prior to applying the higher deceleration. 2- Constant braking input/output shall be maintained. Any occurrence of inconstant braking shall be noted in the test record. d) Burnish: Initial braking speed: 65 km/h Braking deceler
17、ation: 3.5 km/s2 Initial brake temperature: Rep et it i on s: 12OOC - front 100C - rear 200 e) Second effectiveness test 1) Low Tem peratu re effectiveness test Initial braking speed: 50 km/h Braking deceleration: Initial brake temperature: Rep et it i on s: 1.0 mP2 to 10.0 m/s2 5OoC max. - front/re
18、ar Repeat until measurements for 4 or more points are as equal as possible, within total deceleration range. 2 JAS0 C406: 2000 2) Normal temperature effectiveness test The first effectiveness test specified in Item 5.2 above, shall be repeated. braking speeds, however, shall be as follows. Initial b
19、raking speed: The initial 50 km/h, 100 km/h & 130 km/h - PI vehicles 50 km/h, 80 km/h & 100 km/h - P2 vehicles 50 km/h & 80 km/h - P3 vehicles 50 km/h & 65 km/h - P4 vehicles i) First reburnish test The first effectiveness test specified in Item 5.2d shall be repeated. Repetitions shall be 35. The f
20、irst effectiveness test specified in Item 5.2 shall be repeated. Upon completion of the test, the burnish test specified in Item 5.2d shall be repeated. Repetitions shall be 35. g) Light load effectiveness test (Optional): h) Emergency brake test (Optional) Initial braking speed: 100 km/h - PI vehic
21、les 100 km/h - P2 vehicles 65 km/h - P3 vehicles 50 km/h - P4 vehicles 1.0 m/s to 6.0 m/s 8OoC - front 6OoC - rear Repeat until measurements for 4 or more points are as equal as possible, within total deceleration range Braking deceleration: Initial brake temperature: Rep et it i on s: Remarks: 1- F
22、or four-wheel and dual dynamometers, the test shall be conducted in response to each system failure. For single dynamometers, the moment of inertia corresponding to the failure shall be added in the test. 2- Upon completion, repeat the first reburnish test specified in Item 5.2f, then proceed to the
23、 next test. performed at braking a deceleration of 1 .O m/s2 to 2.5 m/s2. When the specified braking deceleration is inadequate, the test shall be i) First fade recovery test 1) Baseline check: +O Initial braking speed: V max., km/h 4 100 km/h Braking deceleration: Initial brake temperature: 5.0 m/s
24、 constant or a constant input that allows that deceleration 8OoC - front 6OoC - rear 3 Rep et it i on s: Remarks: 1- When a constant input is required, select an appropriate pressure in advance to obtain deceleration of 5.0 m/s2 2- When the initial brake temperature must be increased to a specified
25、degree in the fade recovery test, refer to the burnish conditions specified in Item 5.2d. J(8O%V rnax.) - (40%V rnax.) km/h 4 2) Fade test Initial braking speed: Braking deceleration: Initial brake temperature: 6OoC front/rear Braking interval: 100 km/h 3.0 km/s constant or a constant input that all
26、ows that deceleration 35 seconds - PI vehicles 40 seconds - P2 vehicles 45 seconds - P3 & P4 vehicles 3 JAS0 C406: 2000 Rep et it i on s: 10 Remarks: 1- When a constant input is required, select in advance an appropriate pressure for the initial brake application to obtain deceleration equivalent to
27、 3.0 m/s2 upon completion of the baseline check. 2- When any of the braking intervals above are inadequate, the time cycle may be extended to 45 or 60 s. The adjusted braking interval shall be noted in the test record. 3- Upon completion, proceed immediately to the high temperature effectiveness tes
28、t. The interval between the two tests shall be 15 seconds, as a rule. to a maximum of 35 seconds. Any interval extension shall be noted in the test record. Repetitions shall be increased by 3. This may be extended 3) High temperature effectiveness test +O Initial braking speed: V max. km/h 5 100 km/
29、h Braking deceleration: 5.0 km/s2 constant or a constant input that allows that deceleration Rep et it i on s: 1 Remarks: Vehicle stop/restart interval shall be as short as possible. Upon completion, proceed immediately to the cooling effectiveness test. the first test and first braking of the secon
30、d test shall be 120 seconds. The braking interval between completion of 4) Cooling effectiveness test Initial braking speed: 50 km/h Braking deceleration: Braking interval: 120 seconds 3.0 m/s2 constant or a constant input that allows that deceleration Rep et it i on s: 4 Remarks: 1- When a constant
31、 input is required, select in advance an appropriate pressure to obtain deceleration of 3.0 m/s2. 2- Vehicle stop/restart interval shall be as short as possible. Upon completion, proceed immediately to the recovery test. The braking interval between completion of the first test and first braking of
32、the second test shall be 120 seconds. 5) Recovery test +O Initial braking speed: V max., km/h 5 100 km/h Braking deceleration: Braking interval: 120 seconds 5.0 m/s2 constant or a constant input obtained by baseline check Rep et it i on s: 1 6) Effectiveness spot check (Optional) Initial braking spe
33、ed: Braking deceleration: Initial brake temperature: 8OoC - front 6OoC - rear Same as in 2) Fade test Same as in 2) Fade test Rep et it i on s: 2 Remarks: When a constant input is required, select in advance an appropriate pressure to obtain deceleration of 5.0 m/s2. j) Second reburnish k) Second fa
34、de recovery test 1) Base line check Repeat the first reburnish specified in Item 5.2f. Initial braking speed: 50 km/h Braking deceleration: Initial brake temperature: 8OoC - front 6OoC - rear 5.0 km/s2 constant or a constant input that allows that deceleration 4 JAS0 C406: 2000 Rep et it i on s: 3 R
35、emarks: 1- When a constant input is required, select in advance an appropriate pressure to obtain deceleration of 5.0 m/s2. 2- When the initial brake temperature must be increased to a specified degree in the fade recovery test, refer to the burnish conditions specified in Item 5.2d. 2) Fade test Br
36、aking deceleration: Initial braking speed: 4 (80%V rnax.) - (40%V rnax.) km/h 4 100 km/h 5.0 km/s constant or a constant input that allows that deceleration front /rear brake: 6OoC first application 35 seconds - PI vehicles 40 seconds - P2 vehicles 45 seconds - P3 and P4 vehicles 15 Initial brake te
37、mperature: Braking interval: Rep et it i on s: Remarks: 1- When a constant input is required, select in advance an appropriate pressure in the first brake application to obtain deceleration of 5.0 m/s2 upon completion of the base line check. Repetitions shall be increased by three. 2- When any of th
38、e braking intervals above are inadequate, the time cycle may be extended to 45 or 60 seconds. The adjusted braking interval shall be noted in the test record. 3- Upon completion, proceed immediately to the high temperature effectiveness test The interval between the two tests shall be 15 seconds, as
39、 a rule. to a maximum of 35 seconds. This may be extended Any interval extension shall be noted in the test record. 3) High temperature effectiveness test (Optional) +O Initial braking speed: V max., km/h 4 100 km/h Braking deceleration: 5.0 km/s constant or a constant input that allows that Rep et
40、it i on s: deceleration 1 Remarks: Vehicle stop/restart interval shall be as short as possible. Upon completion, proceed immediately to the recovery test. The interval between completion of the first test and first braking of the second test shall be 120 seconds. 4) Recovery test Initial braking spe
41、ed: 50 km/h Braking deceleration: Braking interval: 120 seconds 5.0 m/s2 constant or a constant input obtained by base line check Rep et it i on s: 12 5) Effectiveness spot check (Optional) Initial braking speed: Braking deceleration: Initial brake temperature: 8OoC - front 6OoC - rear Same as in 2)
42、 Fade test Same as in 2) Fade test Rep et it i on s: 2 i) Third reburnish Repeat the first reburnish specified in Item 5.2f. m) Final effectiveness test Repeat the normal temperature effectiveness test specified in Item 5.2e2). An optional test may be done using the following initial braking speeds.
43、 Initial braking speed: 150 km/h - Vehicles with nominal maximum speeds exceeding 160 km/h and less than 170 km/h 5 JASO C406: 2000 160 km/h - Vehicles with nominal maximum speeds exceeding 170 km/h Fourth reburnish Repeat the first reburnish test specified in Item 5.2f. Water recovery test Base lin
44、e check Initial braking speed: 50 km/h Braking deceleration: Initial brake temperature: 8OoC - front 6OoC - rear 3.0 m/s2 constant or a constant input that allows that deceleration Rep et it i on s: 3 Remarks: When a constant input is required, select in advance an appropriate pressure to obtain dec
45、eleration of 3.0 m/s2. 2) Water immersion With the brake released, thoroughly immerse the friction material surface in water for 120 seconds while rotating the brake slowly at 10 to 30 rpm. from the brake system before immersion. Drum brakes may be removed Remarks: 3) Recovery test Upon completion,
46、proceed immediately to the recovery test. Initial braking speed: 50 km/h Braking deceleration: Braking interval: 60 seconds Rep et it i on s: 3.0 m/s2 constant or a constant input that allows that deceleration 15 Remarks: When a constant input is required, select in advance an appropriate pressure t
47、o obtain deceleration of 3.0 m/s2. p) Final measurement and inspection The brake shall be inspected and the observed results shall be recorded. initial measurement specified in Item 5.2a. Repeat the 6. Records Records shall be maintained as follows. a) b) c) d) e) f) Any abnormalities such as noise
48、or vibrations observed at any time during the testing shall be recorded. Values for braking torque, pressure, temperature and initial braking speed (rotational speed) shall be recorded for each test. Pressure and braking torque shall preferably be measured continuously. Conditions of wear on pads (l
49、ining) or discs (drum) before and after the test shall be recorded. Room temperature and humidity during tests shall be recorded. Recording forms are specified in Attached Tables 2 and 3. Reference Standards: JASO C402 JASO C407 Service Brake Road Test Procedures - Passenger Cars Braking Device - Dynamometer Test Procedures- Truck and Bus 6 Attached Table 1 General Performance Test items Fourth Reburnish 2 f 2) Water immersion 2 3) Recovery Test Final Measurement and Inspection 2 t; 1) Base line Check 7 JACO C406:2000 160-170km/h) or 16Okm/h (nominal speed Vmax is over 70km/h) All Repe
