本标准规定了汽车用发动机净功率测量方法。本标准适用于由制造厂提出M和N类汽车用发动机净功率相对于转速变化的曲线。本标准适用于往复活塞发动机(点燃式或压燃式)或转子发动机(点燃式或压燃式)，但不包括自由活塞发动机。 GB/T 17692-1999 汽车用发动机净功率测试方法 GB/T17692-1999 标准下载解压密码：www.bzxz.net

NationalStandardofthePeople'sRepublicofChinaMeasurement Methods of NetPowerforAutomotiveEnginesGB/T 17692-1999
This standard stipulatesthemeasurementmethodsof netpowerforautomotiveenginesThis standard applies to representation of curve as a function of engine speed of the power at fullload indicated by the manufacturer for internal combustion engines intended for the propulsion ofmotor vehicles of categories M and NThis standard applies to reciprocating piston engines (positive-ignition or compression-ignition) orrotary piston engines (positive-ignition or compression-ignition), but excluding free pistonengines.
REFERENCE
The following standards contain provisions, which, through reference in this text, constituteprovisions of this standard. At time of publication the editions indicated were valid. All standardsare subject to revision, and parties to agreements based on this standard are encouraged tcinvestigatethe possibility ofapplying the most recent editions ofthe standards indicatedbelow.SH0041-1993AutomotiveUnleadedGasoline3.DEFINITIONS
For the purposes of this standard:3.1\Approval of an engine\means the approval of an engine type with regard to its net powermeasured in accordance with the procedure specified Annex C of this standard;3.2\Enginetype\means a categoryof an engine for installation in a motor vehicle which does notdiffer in such essential characteristics as those defined in Annex A to this standard;3.3 \Net Power\ means the power obtained on a test bench at the end of the crankshaft or itsequivalent at the corresponding engine speed with the auxiliaries listed in Table 1 of Annex C tothis standard, and determined under reference atmospheric conditions.4.TYPEAPPROVAL
If the power of the engine submitted for approval pursuant to this standard has been measuredaccordingto the specifications of paragraph 5 below, approval of the engine type shall begranted.
ApprovedbyNQTSBon1999-03-10
EnforcementDate:2000-01-01
5.SPECIFICATIONSANDTESTS
5.1General
GB/T17692-1999
The components liable to affect the power of the engine shall be so designed, constructed andassembled as to enable the engine in normal use, despitethe vibration towhich it maybesubjected,to complywith theprovisions of this standard.5.2Description of tests
5.2.I The net power test shall consist of a run at full throttle for positive-ignitionengines and at fixed full-load fuel injection pump setting for diesel engines, theengine being equipped as specified in Table l of Annex C to this standard.5.2.2Measurements shallbetakenata sufficientnumber(morethan8)of engine speedsto define correctly the power curve between the lowest and the highest engine speedsrecommended by the manufacturer. This range of speeds must include the speeds ofrevolution at which the engine produces its maximum power and its maximum torque.5.2.3 The fuel used shall be one available on the market.In any case of dispute,the fuel shall be one of the reference fuels defined by Annex E to this standard5.2.4Measurements shallbecarried outaccordingto theprovisionof AnnexCtothisstandard.
5.2.5 The test report shall contain the results and all the calculations requiredtofind the netpower, as listed in theAppendix CA to Annex Cto this standard togetherwith the characteristics of the engine listed in Annex A to this standard5.3Interpretationofresults
Thenet power indicatedby themanufacturer forthe type of engine shall be acceptedif it does not differ by more than +2% for maximum power and more than +4% at theother measurement points on the curve with a tolerance of + l.5% for engine speed,from the values measured by the technical service on the engine submitted for testing.6.CONFORMITY OF PRODUCTION
6.1 For verifying whether the engine products conform to the approved engine type,conformity production checks shall be carried out according to Annex D to thisstandard
GB/T17692-1999
ANNEXA
(Annex to this standard)
ESSENTIAL CHARACTERISTICS OF THE ENGINE AND INFORMATIONCONCERNING THE CONDUCT OF TESTS 1/Al.Description of engine
Al.1.Make
A1.2.Type
Al.3.Working principle:
positive-ignition/
two-stroke3/
Al.4. Bore
Al.5.Stroke
compression-ignition/
A 1.6.Number and layout of cylinders and firing orderAl.7. Cylinder capacity
Al.8.Compressionratio2/
A1.9.Drawings of combustion chamber and piston crownAl.10.Minimum cross-sectional area of inlet and outlet portsAl.1l.Cooling system:liquid/aircooling3/Al.il.1. Characteristics of liquid-cooling systemNature of liquid
four-stroke/
Circulatingpump:yes/no3/
Characteristics of make(s) and type(s) of the pumpDrive ratio
Thermostat: setting..
Radiator:drawing(s)or make(s)and type(s)Reliefvalve:pressuresetting:Fan: characteristics or make(s) and type(s)Fan drive system:
Fan cowl:
drive ratio:
A 1.ll.2. Characteristics of air-cooling systemBlower: characteristics or make(s) and type(s)..drive ratio:Air ducting (standard production):Temperatureregulatingsystem:yes/no 3/Brief descriptionGB/T 17692-1999
A 1.ll.3.Temperaturepermitted bythemanufactureAl.ll.3.1Liquid cooling:Maximumtemperature at engine outletAl.11.3.2 Air cooling:
Maximum temperature at reference pointA 1.1l.3.3Maximum charge air temperature at reference pointAl.1l.3.4Fuel temperature: min.Al.11.3.5 Lubricant temperature: min.max
A1.12Supercharger:yes/no 3/Description of thesystemA 1.13 Intake system
Intake manifold:
Air filter:..
Intake silencer
Description
Reference point
A2. Additional anti-pollution devices (if any, and if not covered by another heading)Description and diagrams.
A3. Air intake and fuel feedA3.l Description and diagrams of inlet pipes and their accessories (dash-pot, heatingdevice, additional air intakes, etc.)A3.2 Fuel feed
A3.2.1Bycarburetor(s)3/
A3.2.1.2 Type
A3.2. 1.3. 1
Adjustments2/
A3.2.1.3.2 Venturis
A3.2.1.3.3 Float-chamber levelA3.2.1.3.4 Mass of float
A3.2.1.3.5Float needle
A3.2.1.4Manual/automatic choke3/A3.2.1.5Feedpump
Pressure2/
Number
Curve of fuel delivery
plotted against air flow,
and settings required to keep to thecurve2/3/
Closure setting 2 /
orcharacteristicsdiagram2/
A3.2.2.Byfuel injection3/systemdescriptionWorkingprinciple:Intakemanifold/directinjectioninjectionprechamber/swirlchamber3/A3.2.2.1Fuelpump
A3.2.2.1.1 Make
A3.2.2.1.2Type
GB/T17692-1999
A3.2.2.1.3Delivery:mm3perstrokeatapumpspeedofrpm3/2/oralternatively,acharacteristicdiagram3/2calibration procedure:testbench/engine3/A3.2.2.1.4Injection timing
A3.2.2.1.5 Injection curve
Injector nozzle
Governor
A3.2.2.3.1 Make
A3.2.2.3.2Type
A3.2.2.3.3Cut-off point under load min-~A3.2.2.3.4Maximum speed without load min'A3.2.2.3.5 Idle speed
Cold start device
A3.2.2.4.1Make
A3.2.2.4.2Type
A3.2.2.4.3 System descriptionA3.2.2.5 Starting aid
A3.2.2.5.1Make
A3.2.2.5.2 Type
A3.2.2.5.3 System descriptionA4.Valve timing or equivalent dataA4.1 Maximum lift of valves, angles of opening and closing, or timing details of alternativedistributionsystems,inrelationtotopdeadcentreA4.2Referenceand/orsettingranges3/A5.Ignition
A5.1Ignitionsystemtype
A5.1.1Make
A5.1.2Type
A5.！.3Ignitionadvancecurve.2/A5.1.4Ignition timing2/
GB/T17692-1999
A5.1.5Contact-pointgap2/anddwell-angle2/3/A6. Exhaust system
Description and diagrams
A7.Lubrication system
A7.1Description of system
A7.11Positionof lubricant reservoirA7.1.2 Feed system(pump, injection into intake,mixing with fuel, etc.)A7.2Lubricatingpump3/
A7.2.1 Make
A7.2.2 type
A7.3Mixturewithfuel3/
A7.3.1Percentage
A7.40ilcooler:yes/no3/
A7.4. 1 Drawing(s) or make(s) and type(s)A8.Electricalequipment
Generator/alternator: 3/characteristics or make(s) and type(s)A9.Otherauxiliariesfittedontheengine(Enumeration andbrief descriptionifnecessary)Alo.Additional information on test conditionsA10.1Sparkingplugs
Al0.1.1 Make
A10.1.2Type
A10.1.3Spark-gapsetting
A10.2 Ignition coil
A10.2.1Make
A10.2.2 Type
A10.3Ignition condenser
A10.3.1Make
A10.3.2Type
GB/T17692-1999
Al0.4RadiointerferencesuppressionequipmentAl0.4.1Make
A10.4.2 Type
All.Engineperformance (declaredbymanufacturer)A11.1Idlerpm2/
A11.2RPM atmaximumpower2/
All.3 Maximum power-kw (according to paragraph 5.3 of this standard)Al1.4RPMatmaximumtorque2/
A11.5Maximumtorque2/
Notes:
1/In thecase ofnon-conventional engines and systems,particulars equivalent tothose referred to here shall be supplied by the manufacturer.2/Specifythetolerance.
3/Strikeoutwhatdoesnotapply.GB/T17692-1999
ANNEXB
(Annex to this standard)
TESTRESULTS REPORT
B 1.Tradename or mark of engine:B2.Engine type:
B3.Manufacturer's name and address:B4.If applicable,nameand address ofmanufacturer's representative:B5. Engine submitted for approval on:B6.Testinginstituteresponsibleforconductingapprovaltests:B7.Dateof reportissuedbythatinstitute:B8.Number of report issued by that institute:B9.Declaredfigures~
B10Maximumnetpower:
B 11 Maximum net torque:
B12.Essential characteristics oftheenginetype:Operating principle: four stroke/two stroke IL/Number and layout of cylinder:Cylindercapacity:
Fuelfeed:carburetor/indirectinjection/directinjectionl/Pressure-charge device: yes/No 1/Exhaust gas cleaningdevice:yes/No I/min-!
B 13.The documents filed with the request for approval or extension maybe obtained on request.Notes:
1/Strike out whatdoes not applyGB/T17692-1999
ANNEXC
(Annex to this standard)
METHODFORMEASURINGINTERNALCOMBUSTIONENGINENETPOWER
C 1.These provisions apply to the method for representing the power curve at full load of aninternal combustionengineasafunction ofenginespeed.C2.TEST CONDITIONS
C2.1The engine shall have been run-in according to themanufacturer's recommendations.C2.2If the power measurement can be carried out onlyon an enginewith the gear-boxmounted,theefficiencyofthegear-boxshall betaken intoaccount.C2.3 Auxiliaries
C2.3.1Auxiliariestobefitted
During the test, the auxiliaries necessary for the engine operation in the intended application (aslisted in table 1) shall be installed on the test bench as far as possible in the same position as in theintendedapplication.
C2.3.2AuxiliariestoberemovedCertain vehicle accessories necessary only foe operation of the vehicle and which may be mountedon the engine shall be removed for the test. The following non-exhaustive list is given as a sampleair compressorfor brakes
powersteeringcompressor
suspension compressor
air-conditioning system
Whereaccessories cannotberemoved,thepowertheyabsorb intheunloaded conditionmaybedetermined and added to themeasured enginepowerC2.3.3 Compression-ignition engine starting auxiliariesFor the auxiliaries used in starting compression-ignition engines, the two following cases shall beconsidered:
(a)electric starting.Agenerator isfitted and supplies,where necessary,the auxiliaries essential forengine operation;
(b) starting other than by electrical means.If there are any electrically operated accessoriesessential for engine operation for which a generator is fitted. Otherwise, it is removed.In either case, the system for producing and storing the energy necessary for starting is fitted andoperatesintheunloadedcondition.GB/T17692-1999
TABLE1
Auxilaries to be fitted forthetest todepartmentnetpower of engine(\Standard-production equipment\ means equipment by the manufacturer for a particular application)No
Auxiliaries
Intakessystem
Intakemanifold
CrankcaseemissioncontrolsystemAirfilter
Intakesilencer
Speedlimitingdevice
Induction heating device of intake manifoldExhaust system
Exhaust purifier
Exhaustmanifold
Supercharging device
Connecting pipes Ib/
SilencerIb/
Tail pipelb/
Exhaust brake2/
Fuel supply pump3/
Carburetor
Electroniccontrol system,airflowmeteretc.(iffitted)Pressure reducer
Evaporator
Fuel injection equipment (petrol and diesel)Prefilter
Filter
High pressure pipe
Injector
Airintakevalve4/iffitted
Electroniccontrolsystemair,flowmeter,etc.iffittedGovernor/control systems.
Automaticfull-loadstopforthecontrol rackdependingonatmospheric conditions
Fitted for net power test
Yes, standard production
equipment
Yes, standard production
equipment
Yes, standard production
equipment
Yes, standard production
equipment
Yes, standard production
equipment
Equipmentforgasengines
Yes, standard production
equipment
Liquid coolingequipment
Enginebonnet
Bonnet air outlet
radiator
Fan5/6/
Fancowl
Waterpump
Thermostat 7/
Aircooling
Blower5/6/免费标准bzxz.net
Temperature regulating deviceElectricalequipment
Supercharging equipment (if fitted)GB/T 17692-1999
Yes5/standardproductionequipmentYes, standard production equipmentYes,standard production equipmentYes,8/standardproductionequipmenCompressordriven eitherdirectlyby theengine, and/or by the exhaustgases
Charge air cooler9/
Coolantpumporfan(enginedriven)(iffitted)
Auxiliarytestbenchfan
Anti-pollutiondevice10/
Yes, standard production equipmentYes,ifnecessary
Yes, standard production equipmentla/.The completeintake system shall be fitted as provided for the intended application:wherethere is a riskof an appreciable effect on the enginepower;in the case of two-stroke and positive-ignition engines;whenthemanufacturerrequeststhat this shouldbedoneIn other cases, an equivalent system may be used and a check should be made to ascertain thatthe intake pressure does not differ by more than loo Pa from the limit specified by themanufacturer for a clean air filter.1b/
This complete exhaust system shall be fitted as provided for the intended application:where there isa risk of anappreciable effect on the engine power;in the case of two-stroke and positive-ignition engines;whenthemanufacturerrequeststhatthis beshoulddoneIn other cases, an equivalent system may be installed provided the pressure measured at theexit of the engine exhaust systemdoes not differ by more than looo Pa from that specified bythe manufacturer.
Theexit from the engine exhaust systemis definedas a point 15ommdownstream fromthe termination of the part of the exhaust system mounted on the engine.27
If an exhaust brake is incorporated in the engine, the throttle valve must be fixed in a fullopen position.
The fuel feed pressure may be adjusted, if necessary, to reproduce the pressure existing3/
in the particular engine application(particular when a\fuel return\ system is used).GB/T17692-1999
4/Theair intakevalveis the control valvefor thepneumatic governor oftheinjection pump.Thegovernorofthefuelinjectionequipmentmaycontainotherdevicesamount of injected fuel.
which may affect the
5/ The radiator, the fan, the water pump and the thermostat shall be located on the test bench inthe same relative positions as on the vehicle. The cooling liquid circulation shall be operated bythe engine water pump only.
Cooling of the liquid may be cowl be produced either by the engine radiator or by an externalcircuit, provided that the pressure loss of this circuit and the pressure at the pump inlet remainsubstantiallythe sameas those of theengine cooling system,The radiator shutter,if incorporated,shall be in the open position.Where the fan, radiator and cowl system cannot conveniently be fitted to the engine, the powerabsorbed by the fan when separately mounted in its correct position in relation to the radiator andcowl (if used),must bedetermined at the speeds correspondingto the engine speeds used formeasurement of the engine power either by calculation from standard characteristics or bypractical tests.This power, corrected to the standard atmospheric condition defined in paragraphC5.2, should be deducted from the corrected power.6/Where a disconnectable or progressive fan or blower is incorporated, the test shall be madewith the disconnectable fan (or blower) disconnected or with the progressive fan or blowerrunning atmaximum slip.
7/The thermostat maybe fixed in the fullyopen position.8/ Minimum power of the generator: the power of the generator shall be limited to that necessaryfor the operation of accessories which are indispensable for the operation of the engine. If theconnection of a battery is necessary,a fully charged battery in good order must be used.9/ Charge air cooled engines shall be tested with charge air cooling, whether liquid or air cooled,but if the engine manufacturer prefers, a test bench system may replace the air cooled cooler. Ineither case, the measurement of power at each speed shall be made with the same pressure dropand temperature drop of the engine air across the charge air cooler on the test bench system asthosespecified bythe manufacturerfor thesystem on the completevehicle.1o/Theymayinclude,forexample,EGRsystem,catalytic convertor,thermal reactor,secondary air supply system and fuel evaporation protecting system.c2.4Setting conditions
The setting condition for the test to determine the net power are indicated in table 2.TABLE 2-SETTING CONDITIONS
Setting of carburetor(s)
2Setting of injection pump delivery system3 Ignition or injection timing (timing curve)4Governor setting
5Emission control devices
C3.DATATOBERECORDED
In accordancewith the manufacturer'sproduction specifications and used withoutfurtheralteration fortheparticular applicationC3.1 Data to be recorded are those indicated in paragraph CA4 of the Appendix CA to this Annex.Performance data shall be obtained under stabilized operating conditions with an adequate freshair supply to the engine. Combustion chambers may contain deposits, but in limited quantity.Testconditions, such as inlet air temperature, shall be selected as near to reference conditions (seeparagraph C5.2 of this Annex) as possible in order to minimize the magnitude of the corectionfactor.
Exhaust gas recirculation.
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