QC/T 564-2018 PDF English
US$285.00 · In stock · Download in 9 secondsQC/T 564-2018: Performance requirements and test methods for passenger car service brake Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid QC/T 564: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| QC/T 564-2018 | English | 285 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Performance requirements and test methods for passenger car service brake
| Valid |
| QC/T 564-2008 | English | 85 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Performance requirements and bench test methods for passenger car brake
| Obsolete |
| QC/T 564-1999 | English | 359 |
Add to Cart
|
3 days
|
Passenger Car Brake - Bench Test Method
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: QC/T 564-2018
QC/T 564-2018: Performance requirements and test methods for passenger car service brake---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT564-2018
QC
AUTOMOBILE INDUSTRY STANDARD
ICS 43.040.40
T 24
Replacing QC/T 564-2008
Performance requirements and test methods for
passenger car service brake
Issued on. JULY 04, 2018
Implemented on. JANUARY 01, 2019
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Performance requirements... 10
5 Test-related requirements... 13
6 Test preparation... 14
7 Test method... 16
Appendix A (Normative) Braking torque value method... 24
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009
"Directives for standardization - Part 1.Structure and drafting of standards".
This standard replaces QC/T 564-2008 "Performance requirements and bench
test methods for passenger car brake". Compared with QC/T 564-2008, the
main technical changes are as follows.
- MODIFY the definitions of the terms "average braking torque" and "average
braking pressure" (see 3.3, 3.6; 3.3 and 3.6 of the 2008 edition);
- ADD the terms and definitions of "invariable input mode" and "invariable
output mode" (see 3.13, 3.14)
- MODIFY the benchmark vehicle speed and speed stability evaluation
indicators for the braking torque evaluation in the efficiency test (see 4.1.1,
4.1.3, 4.1.8; 4.1.1, 4.1.2, 4.1.5 of the 2008 edition);
- ADD the room temperature efficiency test (see 4.1.2, 4.1.7, 7.1.4, 7.1.13);
- ADD the one pipeline failure test (see 4.1.4, 7.1.7);
- ADD the thermal efficiency test after the fading test (see 4.1.5c), 7.1.9.3);
- ADD the quantitative evaluation method and evaluation indicator of brake
drag phenomenon, after the decline recovery test (see 4.1.5 d), 7.1.9.6.1);
- ADD the braking efficiency test after the wear test (see 4.2.2, 7.2.5)
- ADD the calculation method of the rotation moment of inertia for the failure
test of one pipeline (see 6.3.2);
- MODIFY the initial brake temperature of the wear test (see 7.2.4; 7.2.3 of
the 2008 edition).
This standard was proposed by AND shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this standard. China FAW Co., Ltd. Technology Center,
Zhejiang Wanan Technology Co., Ltd., Zhejiang Asia-Pacific Mechanical and
Electrical Co., Ltd., Hebei Xingyue Brake Element Co., Ltd.
The main drafters of this standard. Lin Dahai, Hou Zonggang, Hu Shuibing,
Shen Kunrui, Wu Changjiang, Wang Shishuang, Shi Ruikang.
This standard replaces the standard previously issued as follows.
- JB 3980-85 and JB 4200-86;
- QC/T 564-1999 and QC/T 582-1999;
- QC/T 564-2008.
Performance requirements and test methods for
passenger car service brake
1 Scope
1.1 This standard specifies the terms and definitions, performance
requirements, test-related requirements, test preparations, test methods for
passenger car service brake assemblies.
1.2 This standard is applicable to the service brake assembly and friction lining
(lining block) assembly, for the category M1 passenger car, which is specified in
GB/T 15089.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB/T 5620 Road vehicles - Braking of automotive vehicles and their trailers
- Vocabulary
GB/T 15089 Classification of power-driven vehicles and trailers
QC/T 556 Automobile brake - Temperature measurement and thermocouple
mounting
3 Terms and definitions
The terms and definitions as defined in GB/T 5620, as well as the following
terms and definitions, apply to this standard.
3.1
Braking period
In the continuous braking process, the elapsed time, from the beginning of
this braking to the beginning of the next braking.
Note. The unit of braking period is s.
3.2
Initial braking temperature
The temperature of the brake drum (disc) or friction lining (lining block), at
the start of braking.
Note. The unit of initial braking temperature is °C.
4 Performance requirements
4.1 Brake performance test
4.1.1 The first efficiency test
Carry out the test according to 7.1.2.When the initial braking speed is 100 km/h
[For vehicle, whose Vmax (Vmax is the highest design speed of the car, the same
below) less than 100 km/h, it is Vmax], the average braking torque of the sample,
under the specified braking pressure, shall not be lower than 80% of the lower
design limit (where there is no lower design limit, it shall not be lower than 72%
of the design value OR as negotiated by both parties).
4.1.2 The first room temperature efficiency test
Carry out test according to 7.1.4.The average braking torque of the sample,
under the specified braking pressure, shall not be lower than 75% of the
average braking torque, under the same braking pressure as the corresponding
initial braking speed, in the second efficiency test.
4.1.4 Failure test of piping system (optional)
Carry out test according to 7.1.7.When the braking pressure is the rated
braking pressure, the average braking deceleration of the sample shall not be
less than 3.0 m/s2.
4.1.8 The third efficiency test
Same as 4.1.3.
4.1.9 Braking noise
During the test process of 7.1, the braking noise value of the sample shall be
less than 76dB (A).
4.1.10 Sample requirements after test
After completing the test of 7.1, the brake shall work normally AND meet the
following requirements.
4.2 Abrasion test of brake
4.2.1 Abrasion requirements
4.2.1.1 The abrasion of brake friction linings (lining block) and brake drums
(disks) shall be negotiated between the supplier and the buyer.
5 Test-related requirements
5.1 Test equipment
5.1.1 The test equipment is an inertial brake test bench (both single and double
wheels are acceptable). Its performance indicators shall meet the test
requirements of this standard.
5.1.5 The test equipment shall be able to continuously record the following
parameters. The measurement error shall meet the following requirements.
5.1.6 The device and thermocouple, which are used for measuring the
temperature of the brake drum (disc) and friction lining (lining block), shall
comply with the relevant requirements in QC/T 556.
5.1.7 The accuracy grade of the instrument or meter, which indicates each
parameter, shall not be lower than grade 2.5.
5.2 Other requirements
5.2.1 All test vehicle speeds shall be rounded off to an integral multiple of 5.
5.2.5 For all tests, which are carried out according to the brake deceleration
control, it shall use the formula (12) to convert the brake deceleration into the
braking torque control value of the test bench.
5.2.6 The radial runout of the brake drum, after installation (measured at the
middle of the width direction of the friction surface of the brake drum), shall not
be greater than 0.2 mm
6 Test preparation
6.1 Thermocouple installation
Install the thermocouple, according to the relevant requirements in QC/T 556.
6.2 Determination of the spindle speed of test bench
The spindle speed of the test bench is determined according to formula (6).
6.3 Determination of test inertia
6.4 Conversion of braking deceleration and braking torque
The braking deceleration, which is required by the test, is converted into the
braking torque control value of the test bench, according to formula (12).
7 Test method
7.1 Brake performance test
7.1.1 Inspection before running-in
7.1.2 The first efficiency test
7.1.2.1 The initial braking temperature is (80 ± 2) °C.
7.1.2.2 The initial braking speed is 30% Vmax BUT not higher than 80 km/h and
100 km/h (For vehicles, whose Vmax is less than 100 km/h, it is Vmax).
7.1.3 Running-in test
7.1.3.1 The initial braking temperature shall not be higher than 120 °C.
7.1.3.2 The initial braking speed is as follows.
7.1.3.3 The braking deceleration is 3.5 m/s2.
7.1.4 The first room temperature efficiency test
7.1.4.1 The initial braking temperature shall not be higher than 45 °C.
7.1.4.2 The initial braking speed is 30%Vmax, BUT not higher than 80 km/h.
7.1.5 The second efficiency test
For vehicles, whose Vmax is not higher than 125 km/h, it is the same as 7.1.2.
For vehicles, whose Vmax is higher than 125 km/h, increase the initial braking
speed of 80% Vmax, BUT not higher than 160 km/h.
7.1.6 The second running-in test
Except that the number of braking operations is 20, the rest is the same as 7.1.3.
7.1.7 Failure test of piping system (optional)
each test.
7.1.8 The third running-in test
Same as 7.1.6.
7.1.9 The first fading recovery test
7.1.9.1 Benchmark test
7.2.3 Running-in test
Same as 7.1.6.
7.2.5 Inspection of braking efficiency
After the end of the abrasion test, carry out the running-in test according to 7.1.6.
Then carry out the efficiency test according to 7.1.5.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of QC/T 564-2018 be delivered?Answer: The full copy PDF of English version of QC/T 564-2018 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of QC/T 564-2018_English with my colleagues?Answer: Yes. The purchased PDF of QC/T 564-2018_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- QC/T 564-2018 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version QC/T 564-2018?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version QC/T 564-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of QC/T 564-2018?A step-by-step guide to download PDF of QC/T 564-2018_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "QC/T 564-2018".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|