GB/T 14951-2007 (GB/T 14951-2023 Newer Version) PDF English
GB/T 14951-2007 (GB/T14951-2007, GBT 14951-2007, GBT14951-2007)
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
GB/T 14951-2023 | English | 350 |
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0-9 seconds. Auto-delivery.
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Measurement method of fuel saving technology for automobiles
| Valid |
GB/T 14951-2007 | English | 155 |
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0-9 seconds. Auto-delivery.
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Measurement method of fuel saving technology for automobiles
| Obsolete |
GB/T 14951-1994 | English | 319 |
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Measurement method of fuel saving technology for automobiles
| Obsolete |
Newer version: GB/T 14951-2023 Standards related to (historical): GB/T 14951-2023
GB/T 14951-2007: PDF in English (GBT 14951-2007) GB/T 14951-2007
GB
ICS 43.020
R 06
National Standard
of the People’s Republic of China
Replacing GB/T 14951-1994, GB/T 17752-1999, GB/T 17753-1999
Measurement method of
fuel saving technology for automobiles
ISSUED ON. JANUARY 24, 2007
IMPLEMENTED ON. AUGUST 1, 2007
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Evaluation items ... 6
5 Performance tests ... 7
6 Test data processing and calculation of evaluation items ... 12
Appendix A ... 18
Appendix B ... 20
Appendix C ... 21
Appendix D ... 23
Foreword
This Standard replaces GB/T 14951-1994 Measurement method of fuel saving
technology for automobiles, GB/T 17752-1999 Test and evaluation methods on
fuel-saving additives of auto-fuel, and GB/T 17753-1999 Test and evaluation
methods on fuel-saving additives of auto-engine oil.
Compared with the three standards GB/T 14951-1994, GB/T 17752-1999, and
GB/T 17753-1999, this Standard has the following major changes.
— REVISE the test methods of on-road fuel consumption for automobiles
(SEE Articles 5.2.2.2 and 5.2.2.3);
— ADD the contrast test contents and methods of fuel consumption per
hundred kilometers and sliding distance in gear for automobiles (SEE
Articles 5.2.2.4 and 5.2.2.6);
— Respectively APPLY different test methods and limits of exhaust
pollutants to the in-use vehicles with different production dates, and ADD
the measurement methods for exhaust pollutants from the vehicles
equipped with exhaust gas processing units (SEE Article 5.2.2.7);
— DELETE the test and evaluation methods of fuel consumption, economic
benefit indicators, and corresponding calculation method with regard to
special working conditions and accelerating working conditions in the
original standard.
Appendixes A, B, C and D of this Standard are normative.
This Standard was proposed by the Ministry of Transport of the People’s
Republic of China.
This Standard shall be under the jurisdiction of the National Technical
Committee for Standardization of Automobile Maintenance and Repair
(SAC/TC 247).
Drafting organization of this Standard. Highway Research Institute of Ministry
of Transport.
Main drafters of this Standard. Han Guoqing, Feng Guiqin, Liu Li, Zhao Kan,
Wang Wei, Dong Guoliang, He Yong, Hong Lanfang, and Cai Fengtian.
The previous versions replaced by this Standard are as follows.
— GB/T 14951-1994;
Measurement method of
fuel saving technology for automobiles
1 Scope
This Standard specifies the evaluation indicators, test methods, test data
processing, and evaluation item calculation of fuel saving technology for in-use
automobiles.
This Standard applies to evaluating the application effect of various fuel saving
technologies for in-use automobiles.
2 Normative references
The provisions in the following documents become the provisions of this
Standard through reference in this Standard. For dated references, the
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, parties who reach an agreement based on this
Standard are encouraged to study if the latest versions of these documents are
applicable. For undated references, the latest versions apply to this Standard.
GB/T 265 Petroleum products – Determination of kinematic viscosity and
calculation of dynamic viscosity
GB/T 3142 Lubricants – Determination of load-carrying capacity (four balls
method)
GB/T 3535 Petroleum products – Determination of pour point (GB/T 3535-
1983, neq ISO 3016.1974)
GB/T 3536 Petroleum products – Determination of flash and fire points –
Cleveland open cup method (GB/T 3536-1983, eqv ISO 2592.1973)
GB 3847 Limits and measurement methods for exhaust smoke from C.I.E.
(Compression Ignition Engine) and vehicle equipped with C.I.E.
GB/T 5096 Petroleum products – Corrosiveness to copper – Copper strip
test (GB/T 5096-1983, eqv ASTM D 130.1983)
GB/T 12534 Motor vehicles – General rules of road test method
GB/T 12543 Acceleration performance test method for motor vehicles
GB/T 12545.2 Commercial vehicle – Fuel consumption test method
GB 18285 Limits and measurement methods for exhaust pollutants from
vehicles equipped ignition engine under two-speed idle conditions and
simple driving mode conditions
GB/T 18297 Performance test code for road vehicle engines (GB/T 18297-
2001, neq ISO 1585.1992, ISO 2534.1998)
GB 18352 (all Parts) Limits and measurement methods for emissions from
light-duty vehicles
3 Terms and definitions
The following term and definition apply to this Standard.
3.1 Fuel saving technologies for automobile
The fuel saving technologies for automobile refer to the technologies that are
able to reduce the automobile fuel consumption and have no adverse effects
on other functional performances of automobiles.
4 Evaluation items
4.1 Economic items
4.1.1 Major items.
a) Fuel-saving amount in intercity operation mode (ᇞQc), in unit of kilogram per
hundred kilometers (kg/100km);
Fuel-saving rate in intercity operation mode (ac), in unit of %.
b) Fuel-saving amount in downtown operation mode (ᇞQs), in unit of kilogram
per hundred kilometers (kg/100km);
Fuel-saving rate in downtown operation mode (as), in unit of %.
c) Fuel-saving amount in rapid operation mode (ᇞQq), in unit of kilogram per
hundred kilometers (kg/100km);
Fuel-saving rate in rapid operation mode (aq), in unit of %.
5.1.2 Contrast tests of automobile road performance
a) Contrast test of automobile fuel consumption at constant speed;
b) Contrast test of automobile fuel consumption under multiple working
conditions;
c) Contrast test of fuel consumption per hundred kilometers for automobiles;
d) Contrast test of full-throttle acceleration performance in top gear (secondary
gear) for automobiles;
e) Sliding contrast test in gear for automobiles;
f) Contrast measurement for exhaust pollutants from automobiles;
g) Smoke contrast measurement for exhaust pollutants from diesel vehicles.
5.1.3 Tests for physicochemical properties of fuel-saving additives
a) Test for physicochemical properties of fuel-saving additives of fuel oil;
b) Test for physicochemical properties of fuel-saving additives of lubricating oil.
5.2 Test methods
5.2.1 Contrast tests of engine pedestal performance
5.2.1.1 Contrast test of total engine power
The contrast test of total engine power shall be conducted according to the
relevant test items given in GB/T 18297.
5.2.1.2 Contrast test of engine load performance
The contrast test of engine load performance shall be conducted according to
the provisions of the load performance test given in GB/T 18297. The control
parameters are given in Table 1. The engine speed corresponds to five kinds of
vehicle speed in top gear or secondary gear, which is measured in the running
process or is calculated according to Formula (1).
Where.
n – Engine speed, in unit of rotations per minute (r/min);
After using the fuel saving technologies for engine oil, the engines shall be
conducted at least four pre-operation cycles. The tests can only be conducted
after the aging lubricating oil treatment.
5.2.2 Contrast tests of automobile road performance
5.2.2.1 Conditions of road contrast test for automobiles
The conditions of road contrast test for automobiles shall conform to the
relevant provisions of GB/T 12534.
5.2.2.2 Contrast test of automobile fuel consumption at constant speed
The contrast test of automobile fuel consumption at constant speed shall be
conducted according to the provisions of GB/T 12545.2.
5.2.2.3 Contrast test of automobile fuel consumption under multiple
working conditions
The contrast test of automobile fuel consumption under multiple working
conditions shall be conducted according to the provisions of GB/T 12545.2.
5.2.2.4 Contrast test of fuel consumption per hundred kilometers for
automobiles
The contrast test of fuel consumption per hundred kilometers for automobiles
shall be conducted according to requirements specified in the Appendix A.
5.2.2.5 Contrast test of full-throttle acceleration performance in top gear
(secondary gear) for automobiles
The contrast test of full-throttle acceleration performance in top gear (secondary
gear) for automobiles shall be conducted according to the provisions of GB/T
12543. The test speed shall meet the following requirements.
— Passenger vehicles. 30km/h-110km/h;
— Commercial vehicles. 30km/h-80km/h.
5.2.2.6 Sliding contrast test in gear for automobiles
The sliding contrast test in gear for automobiles shall be conducted according
to requirements specified in the Appendix B.
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...... Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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