QC/T 961-2013 English PDF (QCT961-2013)

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QC/T 961-2013: Performance requirements and bench test methods of hydraulic brake system plastic reservoir assembly
QC/T 961-2013
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.40
T 24
Performance Requirements and Bench Test Methods
of Hydraulic Brake System Plastic Reservoir
Assembly
ISSUED ON: OCTOBER 17, 2013
IMPLEMENTED ON: MARCH 01, 2014
Issued by: Ministry of Industry and Information Technology of PRC
Attachment:
Number, Name and Initial Implementation Date of the 42
Automobile Industry Standards
S/N Standard No. Standard Name Replaced Standard No.
Implementation
Date
355 QC/T 253-2013
Preparation Methods for Engine
Model used in Motorcycles and
Mopeds
QC/T 253-1998 2014-03-01
356 QC/T 682-2013 Seats Used in Motorcycles and Mopeds QC/T 682-2002 2014-03-01
357 QC/T 229-2013 Technical Conditions for Rotor Pump of Motorcycles and Mopeds QC/T 229-1997 2014-03-01
358 QC/T 952-2013 Disc Wheels for Passenger Car — Dimensional of Attachment on Hub 2014-03-01
359 QC/T 953-2013 Commercial Road Vehicles－Flat Attachment Wheel Fixing Nuts 2014-03-01
360 QC/T 954-2013
Commercial Vehicles－Flat
Attachment Fixing Nuts－Test
Methods
2014-03-01
361 QC/T 258-2013 Test Methods for the Intensity of Vehicle Wheels and Screw Base QC/T 258-1998 2014-03-01
362 QC/T 199-2013 Vehicle Wheels - Balance Weight QC/T 199-1995 2014-03-01
363 QC/T 326-2013 Numbering Rules for Automobile Standardized Parts QC/T 326-1999 2014-03-01
364 QC/T 955-2013 Auto Leveling Device of Special Purpose Vehicle 2014-03-01
365 QC/T 956-2013 Transport Vehicle for Dry-mixed Mortar 2014-03-01
366 QC/T 957-2013 Cleaning Sweeper Truck 2014-03-01
367 QC/T 29104-2013
Method for Coding the Level of
Contamination by Solid Particles of
Special Purpose Vehicle Hydraulic
System
QC/T 29104-
1992 2014-03-01
368 QC/T 29105.3-2013
Sampling Methods of Testing
Particulate Contamination of
Hydraulic Oil of Special Purpose
Vehicle Hydraulic System
QC/T 29105.3-
1992 2014-03-01
369 QC/T 718-2013 Truck Mounted Concrete Pump QC/T 718-2004 2014-03-01
370 QC/T 439-2013 Swept-body Dump Truck QC/T 439-1999 QC/T 440-1999 2014-03-01
371 QC/T 935-2013 Kitchen Garbage Vehicle 2014-03-01
372 QC/T 939-2013 Technical Qualifications of Front Discharge Truck 2014-03-01
373 QC/T 457-2013 Ambulance QC/T 457-2002 2014-03-01
374 QC/T 936-2013 Detachable Container Garbage Collector 2014-03-01
375 QC/T 937-2013 Guardrail Repair Car 2014-03-01
376 QC/T 940-2013 Exhibition Vehicle 2014-03-01
377 QC/T 958-2013
Performance Requirements and
Bench Test Methods of Automobile
Vacuum Pump
2014-03-01
378 QC/T 592-2013 Performance Requirements and QC/T 592-1999 2014-03-01
Table of Contents
Foreword ... 6
1 Scope ... 7
2 Normative Reference ... 7
3 Terms and Definitions ... 7
4 Performance Requirements ... 8
5 Test Methods ... 10
Performance Requirements and Bench Test Methods
of Hydraulic Brake System Plastic Reservoir
Assembly
1 Scope
This Standard specifies the terms and definitions, performance requirements and
bench test methods of plastic reservoir for automotive hydraulic brake system.
This Standard is applicable to plastic reservoir for automotive hydraulic brake system;
plastic reservoir of automotive clutch master cylinders may be implemented by
reference.
2 Normative Reference
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) are applicable to this document.
GB 11121 Gasoline Engine Oils
GB 11122 Diesel Engine Oils
GB 17930 Gasoline for Motor Vehicles
GB 18351 Ethanol Gasoline for Motor Vehicles
3 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1 Maximum level
The highest position allowed to fill brake fluid during use of the reservoir; see Figure 1.
4.1.5.1 Total capacity. Measure according to 5.1.5.1 of this Standard; and the total
capacity of the reservoir shall meet the requirements of the product technical document.
4.1.5.2 Partition capacity. Measure according to 5.1.5.3 of this Standard; and the
partition capacity of any cavity of liquid storage chamber shall meet the design
requirements.
4.1.6 Strength of the installation part. This Standard shall test the reservoir directly
installed on the brake master cylinder according to 5.1.6 of this Standard. The reservoir
and the connection part with the master cylinder shall not be broken, cracked or
deformed; and shall be able to return to the original position after unloading.
4.1.7 Heat resistance. According to 5.1.7 of this Standard, the reservoir shall be free
of cracks, softening and deformation affecting functions. During the entire test, there
shall be no brake fluid overflowing from the reservoir. The brake fluid level of the
reservoir shall be clearly visible; the fluid level indicator shall meet the requirements of
4.2.1 and 4.2.2 of this Standard. For reservoir cover with screw-tightened structure,
the residual locking torque shall be no less than 50% of the initial tightening torque.
Other structures shall be in accordance with the provisions of the product technical
documents.
4.1.8 Cold resistance. Test according to 5.1.8 of this Standard; and the reservoir shall
be free of cracks and deformations that affect functions. The brake liquid level of the
reservoir shall be clearly visible; the liquid level indicator shall meet the requirements
of 4.2.1 and 4.2.2 of this Standard. For reservoir cover with screw-tightened structure,
the residual locking torque shall be no less than 50% of the initial tightening torque.
Other structures shall be in accordance with the provisions of the product technical
documents.
4.1.9 Temperature shock performance. Test according to 5.1.9 of this Standard; the
reservoir shall be free of cracks, softening and deformation that affects functions.
During the entire test, it should not have brake fluid overflow from the reservoir. The
brake liquid level of the reservoir shall be clearly visible; the liquid level indicator shall
meet the requirements of 4.2.1 and 4.2.2 of this Standard. For reservoir cover with
screw-tightened structure, the residual locking torque shall be no less than 50% of the
initial tightening torque. Other structures shall be in accordance with the provisions of
the product technical documents.
4.1.10 Vibration durability. Test according to 5.1.10 of this Standard. The reservoir shall
be free of cracks or damage; all parts shall be intact and work normally. During the
entire test, it should not have brake fluid overflow from the reservoir. The static
workability of the liquid level indicator shall meet the requirements of 4.2.1 of this
Standard. For reservoir cover with screw-tightened structure, the residual locking
torque shall be no less than 50% of the initial tightening torque. Other structures shall
be in accordance with the provisions of the product technical documents.
5.1.1.1 Block all liquid outlets of the reservoir.
5.1.1.2 Connect the brake fluid filling port of the reservoir to the vacuum source; and
after the absolute pressure of the system reaches (250±50) Pa; cut off the vacuum
source.
5.1.1.3 Measure and record the pressure rise value in the reservoir within 20s.
5.1.2 Pressure resistance.
5.1.2.1 Block all liquid outlets of the reservoir.
5.1.2.2 Apply (500±20) kPa air pressure to the reservoir from the brake fluid filling port
of the reservoir; and stabilize the pressure for 1min.
5.1.2.3 Check and record the leakage and damage of the reservoir.
5.1.3 Water resistance of the reservoir cover.
5.1.3.1 Seal all the liquid outlets of the dry reservoir.
5.1.3.2 Put the reservoir cover according to the provisions of the product technical
documents.
5.1.3.3 Install the reservoir on the test fixture according to the actual vehicle installation
angle.
5.1.3.4 From the two directions of top and side of the reservoir cover, spray water at a
flow rate of no less than 3800mL/min for 5min.
5.1.3.5 After the test, wipe the water on the outer surface of the reservoir with a dry
cloth; open the reservoir cover; observe and record whether there is water seeping into
the reservoir.
5.1.4 The air permeability of the reservoir cover.
5.1.4.1 Seal the liquid outlet of the reservoir by a plug, and then fix it on the test device
according to the actual vehicle installation state.
5.1.4.2 Fill the brake fluid to 5mm above the maximum level; put the reservoir cover
according to the provisions of the product technical documents.
5.1.4.3 Open any liquid outlet, observe and record the flow of brake fluid.
5.1.5 Capacity of the reservoir.
5.1.5.1 Total capacity.
5.1.9 Temperature shock performance
5.1.9.1 The sample status and installation status are the same as 5.1.5.1 a) of this
Standard; and the amount of added liquid is the same as 5.1.7.2.
5.1.9.2 Place the test device equipped with the sample in the test chamber at (- 40 ±
2)°C; take it out after keeping it warm for 3h and place it at room temperature for 1h;
then place it at (100 ± 2)°C to keep it warm in the test chamber for 3h; then take it out
and place it at room temperature for 1h. This is regarded as 1 cycle, and a total of 10
cycles are performed.
5.1.9.3 During the test, regularly check whether the brake fluid overflows from the
reservoir.
5.1.9.4 After the test, check and record whether the reservoir has cracks, softening
and deformation affecting the function, as well as the visibility of the reservoir body.
Check the performance of the liquid level indicator in accordance with 5.2.1 and 5.2.2
of this Standard. For the reservoir cover with screw-tightening structure, measure the
residual tightening torque of the reservoir cover at room temperature; other structures
shall be implemented according to the provisions of the product technical document.
5.1.10 Vibration durability.
5.1.10.1 Fix the reservoir on the vibration test device according to the actual vehicle
state; and fill the brake fluid to the maximum level.
5.1.10.2 Use a tightening torque of (3 ± 0.3) N • cm (or as specified in the product
technical document) to put the reservoir cover.
5.1.10.3 Vibrate in the up and down directions for 4 h at a vibration frequency of 10 Hz
and an acceleration of 14.7 m/s2.
5.1.10.4 During the test, regularly check whether the brake fluid overflows from the
reservoir.
5.1.10.5 After the test, check and record whether the reservoir has cracks or
deformation that affects the function. Check the static workability of the liquid level
indicator according to 5.2.1 of this Standard. For the reservoir cover with screw-
tightening structure, measure the residual tightening torque of the reservoir cover at
room temperature; other structures shall be implemented according to the provisions
of the product technical document.
5.1.11 Corrosion resistance.
Wipe the surface of the reservoir with a dry cloth; and apply the following liquids to the
surface of different reservoir samples (apply 2 or 3 times), and check the