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QC/T 1076-2017

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QC/T 1076-2017 英文版 760 购买 现货,9秒内自动发货PDF,有增值税发票。 无级变速器(CVT)性能要求及试验方法 有效

   
标准编号: QC/T 1076-2017 (QC/T1076-2017)
中文名称: 无级变速器(CVT)性能要求及试验方法
英文名称: (Continuously variable transmission (CVT) performance requirements and test methods)
行业: 汽车行业标准 (推荐)
发布日期: 2017-04-12
实施日期: 2017-10-01
标准依据: 工业和信息化部公告2017年第14号
范围: 本标准规定了M1类车辆用无级变速器(CVT)性能要求及试验方法。

QC/T 1076-2017
Performance requirements and testing methods for continuously variable transmission
无级变速器(CVT)性能要求及试验方法
1 范 围
本标准规定了 Mi 类车辆用无级变速器(CVT)性能要求及试验方法。
本标准适用于装备了 CVT的吣类车辆,装备了 CVT 的凡类车辆及 3 500 kg 以下的 M2 类
车辆可参照执行。
2 规范性引用文件
下列文件对于本标准的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本
标准。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本标准。
GB 15089 机动车辆及挂车分类
GB 18352.5-2013 轻型汽车污染物排放限值及测量方法(中国第五阶段)
GB 19233 轻型汽车燃料消耗量试验方法
QC/T 465 汽车机械式变速器分类的术语及定义
ECE RIO Rev.3 关于车辆电磁兼容性认证的统一规定
ISO 11451-2 道路车辆窄带辐射的电磁能量的电磁干扰车辆试验方法第 2 部分:车外辐
射源
ISO 11452-4 道路车辆窄带辐射的电磁能量的电磁干扰车辆试验方法第 4 部分:大电流注
入(BCI)
3 术语和定义
QC/T 465、GB 15089 界定的及下列术语和定义适用于本标准。
3.1
变速比 gear ratio
变速器输入轴转速与输出轴转速的比值。
3.2
无级变速器 CVT continuously variable transmission
可以连续地改变变速比的变速器。
3.3
最/J、变速比 smallest transmission ratio
变速比数值最小。
3.4
最大变速比 largest 计ansmission ratio
变速比数值最大。
3.5
变速比变化幅度 gear ratio spread
最大变速比与最小变速比的比值。
3.6
无级变速部 continuously variable mechanism variator
无级变速器内执行无级变速功能的机构总成。
3.7
无级变速部的变速比 gear ratio of continuously variable department variator ratio
无级变速部输人端与输出端转速的比值。
3.8
中间速比 middle ratio
无级变速部的变速比等于1时的变速比。
3.9
扭矩容量 torque capacity
变速器能够有效传递的最大输入扭矩。
3.1 0
传递效率 transmission efficiency
变速器输出功率与输入功率的比值。
3.1 1
起步装置 starting device
连接在发动机与变速器之间,将发动机转矩传递至变速器的装置,如液力变矩器、摩擦式离合器等。
3.1 2
锁止 lock up
起步装置的输入与输出转速差为 0 的连接状态。
3.1 3
最低燃料消耗率曲线 optimal fuel consumption curve
发动机不同工况下,连接有效燃料消耗率最低值的曲线。
4 试验要求与性能要求
4.1 试验要求
4.1.1 试验条件。
4.1.1.1 环境。
试验期间,试验室内温度应为 288 K〜308 K(15 °C 35 °C),相对湿度应为 20%〜60%,海拔不
超过1 000 m。
4.1.1.2 变速器油。
可使用变速器制造商指定的变速器油,并允许按照制造商指定方式进行油量调节。
4.1.1.3 台架试验磨合。
应按照 5.3.1的要求进行试验前准备。
5.4.2 试验循环。
应按照 5.3.2 的要求进行。
5.4.3 测功机设定。
应按照 5.3.3 的要求进行。
5.4.4 试验程序。
5.4.4.1 按照 GB 18352.5-2013 的附录 C 的规定运行试验。
5.4.4.2 测量锁止时间,即发动机转速与 CVT 输入轴转速差绝对值不超过 50 r/min 的状态的累
计时间。
5.4.5 试验结果处理。
应按下式计算液力变矩器锁止比。
5.5.1 试验准备。
应按照 5.1.1 条的要求进行试验前准备。
5.5.2 试验程序。
5.5.2.1 将驱动电机设定为转速控制模式。
5.5.2.2 将负载电机设定为扭矩控制模式。
5.5.2.3 将 CVT 设定在 D 档位置。
5.5.2.4 设定起步装置为锁止状态。
5.5.2.5 驱动电机转速设定为 1 000 r/min。
5.5.2.6 调节 CVT 控制器,使变速器达到最大变速比时的油压设计值并稳定工作。
值保持稳定后,测量时间不少于 10 s。
5.5.2.8 按1 000 r/min 的增量提高驱动电机的转速(最高不超过 120 km/h 车速对应的转速),保
持变速比与驱动电机扭矩不变,测量负载电机的转速与扭矩。
5.5.2.9 按表 3 的要求增加驱动电机扭矩,重复试验程序 5.5.2.8。
5.5.2.10 调节 CVT 控制器,使变速器达到中间速比时的油压设计值并稳定工作,重复试验程序
5.2.2.7〜5.2.2.9。
5.5.2.11 调节 CVT 控制器,使变速器达到最低变速比时的油压设计值并稳定工作,重复试验程序
5.2.2.7〜5.2.2.9。
5.5.2.12 按照表 3 所示记录数据。
5.6.1 试验设备。
5.6.1.1 动力传动系统试验台架。
5.6.1.2 转速、扭矩、温度测量设备。
5.6.1.3 校准器、传声器和风球。
5.6.1.4 噪声数据采集处理系统。
5.6.2 试验要求。
5.6.2.1 试验应在半消声室内进行,背景噪声低于 25 dB(A);最终测量结果与本底噪声的差值不
小于 10 dB(A)。
5.6.2.2 CVT 在台架上的安装状态与其在整车上的安装状态一致,CVT 输入轴的轴心线距离地
5.6.2.3 CVT 输出轴应使用原车的驱动轴和轮毂(如有)。
5.6.2.4 试验台架油冷单元的冷却能力与原车等效,且保证 CVT 正常运转。
5.6.2.5 噪声测量过程中,不能使用风机,CVT 润滑油温度保持在(80士 5)°C,个别极限工况可放
宽温度限值,但不应高于 100 °c。
5.6.2.6 磨合规范按 4.1.3规定进行。
5.6.2.7 噪声测量的频率范围在 200 Hz 8 000 Hz。
5.6.2.8 传声器安装位置在 CVT 中心点上、左、右、前四个位置,传声器与 CVT 的外壳包络面(对
应传声器安装侧)距离为1 m。针对不同布置形式的 CVT,当试验台架与某个测点位置干涉时可取
消该测点,但最多可取消一个测点。
5.6.3.1 关闭试验台架所有设备,测量试验室背景噪声。
5.6.3.2 被测变速器在台架上安装之前,测量试验台架的本底噪声,按规定布置传声器,试验台架
按规定各工况转速运转,各传声器测得的噪声即为本底噪声。
5.6.3.3 CVT 档位控制在 D 档位置,起步装置处于锁止状态。
5.6.3.4 按规定布置传声器,并用校准器校准。

QC/T 1076-2017
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.50
T 21
Performance requirements and testing methods for
continuously variable transmission
无级变速器(CVT)性能要求及试验方法
ISSUED ON: APRIL 12, 2017
IMPLEMENTED ON: OCTOBER 1, 2017
Issued by: Ministry of Industry and Information Technology of the
People’s Republic of China.
Table of Contents
Foreword ... 7 
1 Scope ... 8 
2 Normative references ... 8 
3 Terms and definitions ... 9 
4 Testing requirements and performance requirements ... 10 
5 Testing methods ... 13 
Performance requirements and testing methods for
continuously variable transmission
1 Scope
This Standard specifies the performance requirements and testing methods
for continuously variable transmissions (CVTs) for M1 vehicles.
This Standard applies to the M1 vehicles equipped with CVTs, while N1
vehicles equipped with CVTs and M2 vehicles under 3,500kg may be
implemented in accordance with this Standard.
2 Normative references
The following documents are essential for the application of this Standard.
For dated references, only the dated editions apply to this Standard. For
undated references, the latest editions (including all amendments) apply to
this Standard.
GB 15089 Classification of power-driven vehicle and trailers
GB 18352.5-2013 Limits and measurement methods for emissions from
light-duty vehicles (CHINA 5)
GB 19233 Measurement methods of fuel consumption for light-duty
vehicles
QC/T 465 Automotive mechanical transmission terminology and definition
ECE R10 Rev. 3 Uniform provisions concerning the approval of: vehicles
with regard to electromagnetic compatibility
ISO 11451-2 Road vehicles - Vehicle test methods for electrical
disturbances from narrowband radiated electromagnetic energy - Part 2:
Off-vehicle radiation sources
ISO 11452-4 Road vehicles - Vehicle test methods for electrical
disturbances from narrowband radiated electromagnetic energy - Part 4:
Bulk current injection (BCI)
3.11 Starting device
A device that is coupled between the engine and the transmission to transfer
engine torque to the transmission, such as a torque converter, a friction clutch,
etc.
3.12 Lock up
A connection state where the speed difference between input and output of
the starting device is 0.
3.13 Optimal fuel consumption curve
A curve connecting the lowest effective fuel consumption rate under different
operating conditions of the engine.
4 Testing requirements and performance
requirements
4.1 Testing requirements
4.1.1 Testing conditions
4.1.1.1 Environment
During the test, the temperature in the test chamber shall be 288K to 308K
(15°C to 35°C), the relative humidity shall be 20% to 60%, and the altitude
shall not exceed 1,000m.
4.1.1.2 Transmission oil
The transmission oil specified by the transmission manufacturer may be used,
and the fuel quantity is allowed to be adjusted in a manner specified by the
manufacturer.
4.1.1.3 Bench test run-in
Before performing the measurement test of the actual gear ratio and gear
test samples shall be run-in according to the following specifications:
a) The speed of the drive motor is set to 1,000r/min to 2,000r/min, and the
torque is set to 50% of the rated torque.
b) RUN-IN 1h in the states of the largest transmission ratio, the smallest
transmission ratio, and the middle transmission ratio, respectively.
connecting shaft of the CVT.
5.1.1.1.3 The CVT oil cooler and piping shall be the same as when the
vehicle is running normally, and the rigid pipe cannot be bent.
5.1.1.1.4 The joint shall be effectively sealed and shall not leak oil.
The test equipment and samples shall be run-in in accordance with the
requirements of 4.1.3.
5.1.2 Test procedure
5.1.2.1 SET the drive motor to the speed control mode.
5.1.2.2 SET the load motor to the no-load state.
5.1.2.3 SET the CVT to the D-gear position.
5.1.2.4 SET the starting device to the lock-up state.
5.1.2.5 INCREASE the speed of the drive motor so that the transmission is
able to achieve the lowest oil pressure to maintain normal operation.
pressure design value at the largest transmission ratio or the smallest
transmission ratio, respectively, and operates stably.
5.1.2.7 MEASURE the drive motor speed, N1, and N2 and N3 of the load
motor at different gear ratios. The measurement time is not less than 10s, and
the sampling interval is no more than 10ms.
5.1.2.8 REPEAT steps 5.1.2.3 to 5.1.2.7 for 3 tests.
5.1.3 Treatment of test results
5.1.3.1 CALCULATE the gear ratio according to the following formula:
Where:
N1i - The average speed of the drive motor in the ith test;
During the test, the difference between the theoretical speed and the actual
speed of the transmission load motor shall not exceed 5%, and the input
torque at this time is the transmission torque capacity.
It shall be corrected according to the following formula:
Where:
Tc - Transmission torque capacity;
Tin - Input torque;
Tdin - Loss of torque at the input of the device.
5.3.1 Test preparation
Pre-test preparation shall be carried out in accordance with the requirements
of 4.1.5.
5.3.2 Test cycle
The test cycle, as described in Annex CA of Appendix C of GB 18352.5-2013,
consists of two parts of Part 1 (urban driving) and Part 2 (suburban driving). If
the vehicle does not reach the acceleration and maximum speed values
required by the test cycle, the accelerator pedal shall be stepped through until
the required operating curve is returned. Deviation from the test cycle shall be
5.3.3 Dynamometer settings
The load and inertia of the dynamometer shall be set according to the
provisions of Appendix C of GB 18352.5-2013.
5.3.4 Test procedure
5.3.4.1 OBTAIN the engine optimal fuel consumption rate curve map.
5.3.4.2 RUN the test according to the provisions of Appendix C of GB
18352.5-2013.
5.3.4.3 MEASURE the engine speed and torque.
5.3.4.4 The data acquisition frequency is 1Hz.
L - Lock-up ratio;
tlock - Lock-up duration;
t - Total duration of the test (excluding the idle time).
5.5 Transmission efficiency
5.5.1 Test preparation
Pre-test preparation shall be carried out in accordance with the requirements
of 5.1.1.
5.5.2 Test procedure
5.5.2.1 SET the drive motor to the speed control mode.
5.5.2.3 SET the CVT to the D-gear position.
5.5.2.4 SET the starting device to the lock-up state.
5.5.2.5 SET the drive motor speed to 1,000r/min.
5.5.2.6 ADJUST the CVT controller so that the transmission reaches the oil
pressure design value at the largest transmission ratio, and operates stably.
5.5.2.7 ADJUST the torque of the drive motor to 25%, 50%, and 75% of the
rated torque load, respectively, and MEASURE the torque of the load motor;
after the value is stable, the measurement time is not less than 10s.
5.5.2.8 The load motor speed is increased by an increment of 1,000r/min
speed of 120km/h). MAINTAIN the gear ratio and the drive motor torque
unchanged. MEASURE the speed and torque of the load motor.
5.5.2.9 INCREASE the drive motor torque as specified in Table 3, and
REPEAT the test procedure 5.5.2.8.
5.5.2.10 ADJUST the CVT controller to make the transmission reach the oil
pressure design value at the middle ratio and operate stably. REPEAT the
test procedures 5.2.2.7 to 5.2.2.9.
5.5.2.11 ADJUST the CVT controller to make the transmission reach the oil
pressure design value at the smallest transmission ratio and operate stably.
5.6.1.2 Speed, torque and temperature measuring devices.
5.6.1.3 Calibrator, microphone and wind ball.
5.6.1.4 Noise data acquisition and processing system.
5.6.2 Test requirements
5.6.2.1 The test shall be carried out in a semi-anechoic chamber with a
background noise of less than 25dB(A); and the difference between the final
measurement and the background noise shall not be less than 10dB(A).
5.6.2.2 The installation state of the CVT on the bench is the same as the
installation state on the complete vehicle. The shaft axis of the CVT input
5.6.2.3 The CVT output shaft shall use the drive shaft and hub (if any) of the
original vehicle.
5.6.2.4 The cooling capacity of the oil cooling unit of the test bench is
equivalent to the original vehicle, and the CVT is guaranteed to operate
normally.
5.6.2.5 During the noise measurement process, the fan cannot be used.
The CVT lubricating oil temperature is maintained at (80±5)°C, and the
individual extreme conditions may relax the temperature limit, but shall not
exceed 100°C.
4.1.3.
5.6.2.7 The frequency range of noise measurement is from 200Hz to
8,000Hz.
5.6.2.8 The installation positions of the microphone are at the top, left, right
and front of the CVT center, and the distance between the microphone and
the outer envelope surface of the CVT (corresponding to the microphone
installation side) is 1m. For different layouts of CVT, when the test bench
interferes with the position of a certain measuring point, the measuring point
may be canceled, but at most one measuring point may be canceled.
5.6.3.1 TURN off all devices of the test bench, and MEASURE the
background noise of the test chamber.
5.6.3.2 MEASURE the background noise of the test bench before the
transmission under test is installed on the bench. ARRANGE the
In the case of canceling a measuring point, the above formula is changed to:
5.7 Electromagnetic compatibility
5.7.1 Narrowband electromagnetic radiation test
Narrowband electromagnetic radiation testing shall be carried out in
accordance with the provisions of Annex 8 of ECE R10 Rev. 3 Uniform
   
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