GB 21377-2015Tri-wheel vehicles - Limits and measurement methods for fuel consumption (English PDF)

Foreword

All technical contents of this standard is mandatory. This standard was drafted in accordance with rules GB/T 1.1-2009 given. This standard replaces GB 21377-2008 "three vehicle fuel consumption limits and measurement methods." This standard and GB/T 21377- The main changes compared to 2008 are as follows:

--- Normative application file for adjustment and reconfirmation;

--- Measurements adjusted using the chassis dynamometer, and adjust the corresponding fuel consumption limits;

--- Increased fuel consumption calculation;

--- Increased production conformance requirements;

--- Increase the implementation of standards requirements. The standard proposed by China Machinery Industry Federation. The low standard by the National Automotive Standardization Technical Committee (SAC/TC234) centralized. This standard is drafted by: National Quality Supervision and Inspection Center of farm machinery, industrial machinery and farm vehicles, tractors Product Quality Inspection Heart, National Tractor Quality Supervision and Inspection Center. Participated in the drafting of this standard. Shandong Shifeng (Group) Co., Ltd., Shandong five levy Group Co., Ltd., Fukuda Lovol International Heavy Industry Zhucheng Vehicle Plant Co., Ltd. Shandong double force of the vehicle, Ltd. Henan gallop. The main drafters. Zhang Xian wins, Lv Shusheng, Min Haitao, in Chi Lang, Chen Ge, Guan Peng, Lin Lianhua, Xia Wang Min, Ren Chenghua Palace Zengmin, Tang Xilin. This standard superseded previous editions case.

--- GB 21377-2008. Three vehicle fuel consumption limits and measurement methods

1 Scope

GB 21377-2015 is the Chinese national standard on tri-wheel vehicles - limits and measurement methods for fuel consumption, in the field of agriculture. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 3 July 2015 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 October 2015. Classification: ICS 65.060, CCS T54. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the three-wheeled automobile fuel consumption limit, measurement conditions, methods of measurement, fuel consumption calculations, production consistency inspection Investigation, the implementation of standards. This standard applies to three cars.

2 Normative references

The following documents for the application of this document is essential. For dated references, only applies to the version dated paper Pieces. For undated references, the latest edition (including any amendments) applies to this document.

GB 21378-2015 low-speed vehicle fuel consumption limits and measurement methods

GB/T 24945 three cars General technical conditions

GB/T 24948 wheel vehicles and low-speed vehicles vocabulary

3 Terms and Definitions

GB/T 24948 and defined by the following terms and definitions apply to this document.

3.1 Gaseous pollutants gaseouscontaminant Exhaust pollutants carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx). NOTE. hydrocarbons (HC) represents carbon equivalent (assuming hydrocarbon ratio 1.1.86), nitrogen oxides (NOx) to nitrogen dioxide (NO2) equivalent.

3.2 Particulate matter particulate According to the test method described in Appendix A, at a maximum temperature of 325K (52 °C) of the diluted exhaust gas, shall be prescribed by the filter media collection The exhaust gas composition.

3.3 Exhaust pollutants exhaustpolutants Exhaust pipe of gaseous pollutants and particulate matter.

3.4 Equivalent inertia equivalentinertia Movement and moment of inertia of the equivalent mass on the chassis dynamometer with inertia simulator simulates three car driving.

3.5 Reference quality referencemass Three cars "curb weight" plus 100kg.

4 Limits of Fuel Consumption

In the three-wheeled vehicles in line with GB/T 24945 requirements prescribed under, three vehicle fuel consumption should not exceed the limits specified in Table 1. Table 1 three vehicle fuel consumption limit Maximum design The total mass M kg Cylinder diesel engine fitted three-wheeled car Fuel Consumption Limits L/100km Multi-cylinder diesel engine fitted three-wheeled car Fuel Consumption Limits L/100km Type Approval production consistency check type approval Conformity of Production M<=1000 4.8 5.0 4.6 4.8 1000 \u003cM<=1500 5.5 5.7 5.2 5.5 1500 \u003cM<=2000 6.6 6.9 6.3 6.6 2000 \u003cM<=3000 7.7 8.1 7.3 7.7

6 Measurement Methods

Test cycle on a chassis dynamometer

6.1 Operating cycle three-wheeled vehicles according to the provisions of Appendix A be set in accordance with Appendix B of the test cycle.

6.2.1 Chassis dynamometer Chassis dynamometer properties should meet the requirements of this standard and test requirements of the relevant standards. When measuring fuel consumption measurement systems for fuel consumption, distance traveled and time should be synchronized.

8 Conformity of Production

8.1 As a general rule, three cars in terms of fuel consumption of the production consistency of assurance measures should be based on the test results report Content based on the value and type approval.

8.2 Conformity of Production test finger drawn in three automobile manufacturers mass-produced product in three cars, and in accordance with the provisions of Chapter

6 Test, it was confirmed that the fuel consumption and compliance Table 1.

8.3 If a model has several extended models, conformity of production tests shall be described in the initial type testing of the application materials base car Progressive type. If the base model has been discontinued initial type testing, conformity of production tests are carried out on an expansion models.

8.4 Type certification body to determine the kind of car after three cars, three car manufacturers can not be extracted for three cars make any adjustments.

8.5 Notwithstanding the requirements of 5.1.1, the test can be extracted from the production line in three cars off the assembly line in the sample qualified the car directly.

8.6 If the manufacturer requirements, according to the manufacturer's specifications running were running, but not for three cars to make any adjustments. 8.7

5.5 conformance test should be used with a predetermined reference fuel.

8.8 If the product extracted from the bulk sample vehicles can not meet the requirements of Table 1, according to three automobile manufacturing companies require pumping from batch products Take several prototypes, including the original sample vehicles were measured. Conformity of Production testing organization shall determine the number of samples n. N extraction units The arithmetic mean x and the standard fuel consumption measurements like vehicle deviation s, if meet the requirements of the formula (10), and then consider the inspection agency Product meets the conformance requirements. Or that the batch of products do not meet the requirements of the conformity of production. xk × s<=L (10) Where. L

--- three vehicle fuel consumption specified in Table 1 of the different engine assembly limits; K

--- statistical coefficient varies with n, are given in Table 3, if n>=20, then k =

0.860 Table 3 statistical coefficient n 2 3 4 5 6 7 8 9 10 k 0.973 0.613 0.489 0.421 0.376 0.342 0.317 0.296

0.279 n 11 12 13 14 15 16 17 18 19 k 0.265 0.253 0.242 0.233 0.224 0.216 0.210 0.203

0.198 s

Appendix A

(Normative) Three vehicle fuel consumption measurement A.1 on the chassis dynamometer operation cycle On the chassis dynamometer operation cycle in accordance with Appendix B requirements. A.2 general conditions of operation cycle When necessary, before the test run test run cycle, to determine how to properly operate the accelerator pedal and the brake pedal, so that the actual cycle Central and close to the theoretical cycle within the prescribed tolerances. A.3 transmission use A.3.1 If the transmission gear I can reach maximum speed of less than 10km/h, then use II gear or technical documents recommended gear. When the three-wheeled vehicles can not reach acceleration and maximum speed values required for the operation cycle, the accelerator pedal should be riding in the end completely until three Car to return to the required operating curve. Availability deviate operation cycle shall be recorded in the test report. A.3.2 When the test should be used during normal driving gear used, according to the manufacturer's instructions using the gear. A.3.3 If a launch vehicle engine idling is higher than the low speed operation cycle unit No. 4, No. 9 and No. 16 during operation Machine speed, at the request of the manufacturer, the number during the previous operation, the clutch can be disengaged. A.4 Tolerances A.4.1 acceleration, constant speed and deceleration with the brakes, the vehicle speed and the theoretical speed indicates the allowable tolerance of ± 2km/h. Without the use of the brake, the Deceleration too fast, it can only use A.7.4.3 requirements. When conditions change, the speed may be greater than a predetermined tolerance value, but each of tolerance of Time is not greater than 1s. A.4.2 time tolerance of ± 1s. The tolerances applicable to the start and end of each shift low speed operation cycle period. A.5 Test Equipment A.5.1 chassis dynamometer A.5.1.1 dynamometer test used may be a fixed load curve (the physical characteristics of the dynamometer provides a fixed load curve shape) Or adjustable load curve (dynamometer with at least two road load parameters can be adjusted to form a load curve). A.5.1.2 dynamometer setting shall not affect the passage of time and can not make any three-wheeled vehicles may prevent the normal three-wheeled vehicles Vibration operation. A.5.1.3 dynamometer shall be equipped with inertia simulation and load simulation device. A.5.1.4 Accuracy dynamometer shall meet the following criteria.

a) measuring and indicating the reading load, its accuracy should be able to reach ± 5%.

b) For a fixed load curve dynamometer, the accuracy of the load setting at 80km/h should achieve ± 5%. For the load curve Adjustable dynamometer, dynamometer road load corresponding to the load at 80km/h, 60km/h, quasi 40km/h and 20km/h when Accuracy should reach ± 5%, while at 20km/h was ± 15%, is lower than this speed, the dynamometer should be able to absorb power. Total inertia

c) the rotating member (including analog inertia) should be known and used in the test range of the order of ± 20kg.

d) the speed should be measured by the speed of the drum. When the vehicle speed is greater than 10km/h, the measurement accuracy shall be ± 1km/h; small speed When than or equal to 10km/h, the measurement accuracy shall be ± 2km/h. The actual distance

e) three cars should be measured by the rotation of the drum distance. A.5.1.5 load and inertia set in the following manner.

a) a fixed load curve dynamometer. the load simulator shall be adjusted at 80km/h constant speed, to make it absorb the drive wheels Power, and at 30km/h power absorbed shall be recorded.

b) Adjustable load curve dynamometer. Should respectively 80km/h, adjust the load under 60km/h, 40km/h and 20km/h constant speed Simulator to make it absorb the power on drive wheels.

c) dynamometer with electrically simulated inertia, should be verified with the mechanical inertia of the system of equivalence. A.5.2 exhaust sampling system A.5.2.1 exhaust sampling system should be able to extract the real three-wheeled automobile exhaust emissions measured pollutants. Constant volume sampling system should be used (CVS). Such systems require exhaust continuously diluted with ambient air three cars under controlled conditions. Measuring the constant volume sampling system Concept, should meet two conditions. the total volume of the mixture should be measured in the exhaust and dilution air, according to the ratio of the volume of gas samples were continuously collected analysis. Quality exhaust pollutant gas concentration is determined by the sample, and the sample gas concentrations of total ambient air pollutant content and test period in accordance with Traffic to be amended. A.5.2.2 flow through the exhaust gas sampling system should be large enough to avoid all possible conditions experienced during the test prescribed in the emergence of the cold Condensate water. A.5.2.3 exhaust air and gas mixture should be uniform. A.5.2.4 probe shall extract a true sample diluted exhaust gas. A.5.2.5 exhaust gas sampling system should not leak. Structures and Materials exhaust gas sampling system shall ensure that the sampling system itself does not affect the diluted exhaust gas The concentration of pollutants. If any sampling system components (heat exchanger, blower, etc.) change the concentration of any pollutant in the diluted exhaust gas, and They can not be corrected, the contaminants should be sampled before the member. Static A.5.2.6 three static pressure fluctuations in automobile exhaust pipe at the outlet of the exhaust pipe without connecting pipe in dynamometer operation cycle measured Voltage fluctuations, a difference should be within ± 1.25kPa. Back pressure exhaust pipe should be as close to the outlet of the exhaust pipe, or having the same diameter Extend the pipe to measure. A.5.2.7 various valves used to change the direction of the exhaust gas should be rapid adjustment, quick acting type. A.5.2.8 The gas collected in the volume of the sample gas sampling bag suitable. Material sampling bags shall ensure the storage of polluting gases 20min After the change of pollutant gas concentration does not exceed ± 2%. A.5.3 Analysis Equipment A.5.3.1 Requirements A.5.3.1.1 gaseous pollutants should be analyzed with the following instruments. Carbon monoxide (CO) and carbon dioxide (CO2) analyzer. nondispersive infrared absorption (NDIR) type. Hydrocarbons (HC) analyzer. Heated flame ionization (HFID) type. Its detector, valves, pipes, etc. heated to 463K ± 10K (190 °C ± 10 °C). Calibration using propane gas to carbon atoms (C1) equivalent. A.5.3.1.2 Accuracy All analyzers shall have a consistent range and accuracy of the measurement sample gas exhaust pollutants desired concentration. Regardless of the actual value of the calibration gas is the amount of measurement error shall not exceed ± 2% (error analyzer itself). Calibration gas volume fraction Number is less than 100 × 10-6, when the measurement error shall not exceed ± 2 × 10-6. Apply the same ambient air sample gas analyzer carried in the same ran...