This standard specifies the main technical requirements, test methods, marking, inspection rules, packaging and storage of gasoline engines for construction machinery. This standard applies to the manufacturing, delivery acceptance and product quality inspection of gasoline engines for construction machinery such as forklifts, dump trucks, loaders, etc. JB/T 5136-1991 Technical requirements for gasoline engines for construction machinery JB/T5136-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB5136--91
Gasoline Engine for Construction Machinery
Published on 1991-06-26
Technical Conditions
Implemented on 1992-07-01
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Gasoline Engine for Construction Machinery:
Technical Conditions
1 Subject Content and Scope of Application
JB513691
This standard specifies the main technical requirements, test methods, markings, inspection rules, packaging and storage of gasoline engines for construction machinery (hereinafter referred to as gasoline engines).
This standard applies to the manufacturing, delivery acceptance and product quality inspection of gasoline engines for construction machinery, such as forklifts, dump trucks, loaders, etc.
2 Reference standards
GB1859
GB2828
GB3821
GB3842
GB6929
GB10399
JB/T5144
3 Technical requirements
Model compilation rules for internal combustion engine product names Test methods for internal combustion engine bench performance Standard environmental conditions and calibration of power, fuel consumption and oil consumption Determination of noise of internal combustion engines Method
Batch-by-batch inspection Count sampling procedures and sampling tables (applicable to continuous batch inspection) Cleanliness determination method for small and medium-power internal combustion engines Speed ​​pollutant emission standard for gasoline engines
Reciprocating internal combustion engine rotation direction
Vibration rating for small gasoline engines
Performance test method for gasoline engines for construction machinery Cleanliness limit for small and medium-power internal combustion engines
3.1 Gasoline engine products shall be manufactured according to product drawings and technical documents approved through prescribed procedures, and shall comply with the provisions of this standard. 3.2 The main parts, components and accessories of gasoline engines of the same series and model shall be interchangeable, and gasoline engines of the same model shall be interchangeable as a whole. The manufacturer shall provide the following main technical specifications and parameters of the gasoline engine in the technical documents: 3.3
Model (should comply with the provisions of GB725)
Type (refers to the number of strokes, cooling method, cylinder arrangement and combustion chamber type, etc.); Number of gas chains:
Cylinder diameter
Piston stroke
Total displacement L
Rated power and rated speed kW and r/min; Maximum torque and its corresponding speed
Nm,r/min:
Maximum no-load speed: /min;
Minimum no-load stable speed (resting speed) t/min: Fuel brand:
Fuel consumption kg/h;
Approved by the Ministry of Machinery and Electronics Industry on June 26, 1991 and July 1992 -01 implementation
Fuel consumption rate g/(xW·h);
Oil brand (for winter and summer):
Oil consumption kg/ht
Oil consumption rate g/(kW·h);
Oil pressure kPa;
Air siphon type (dry, compliant or unlicensed), average piston speed, m/s;
Compression ratio:
Compression pressure kPa (at specified speed):
Average effective pressure kPa (at maximum torque) Intake vacuum kPa (at calibrated transfer);
Exhaust temperature K or C (at main pipe):
Cooling medium inlet temperature K or C;
Cooling medium outlet temperature K or C:
Oil temperature K or C ( High value)
Ignition order;
Ignition advance angle
Before top dead center (\);
JB513691
Valve timing (crankshaft angle when intake and exhaust valves are opened and closed) (\); Valve spacing (cold, hot) intake valve mm, exhaust valve anm Rotation direction (should comply with the provisions of GB6929); Overall dimensions (length × width × height) mm;
Net mass kg (excluding oil, water, chassis, radiator and transmission assembly); Total mass kg (including chassis, radiator and transmission); Carburetor type and model,
Speed ​​governor (speed limiter) type and model:
Distributor model;
Break circuit breaker contact spacing
Fuel filter type,
Fuel tank capacity L:
Oil capacity L:
Oil filter type and model:
Air filter type;
Starter type and model:
Generator type and model:bZxz.net
Regulator type and model:
Cooling water pump type and model:
Spark plug model,
Spark plug spacing
Maximum allowable inclination angle of gasoline engine operation (lateral and weaving direction) (*);Tightening torque of cylinder head bolts N·m;
Tightening torque of connecting rod nut N·m:
Tightening torque of main bearing bolts N·m;
Torque torque of flywheel bolts N·M:
Note: The above items can be reduced according to the structure and purpose of the gasoline engine. JB5136—91
3.4 ​​The manufacturer should provide the user's required service curve based on the use characteristics of the gasoline engine. 3.5 The manufacturer should ensure that the gasoline engine can output the rated power on the nameplate under standard environmental conditions. The allowable difference in the rated power is 5%, and the upper limit is not specified. When the test environment is different from the standard environmental conditions, the power should be corrected in accordance with the provisions of JB/T5144. 3.6 The consumption rate of fuel and engine oil shall comply with the following provisions. 3.6.1 Fuel consumption rate
Fuel consumption rate under rated conditions: When the single-bottle lifting capacity of a four-stroke engine is greater than 0.20~0.40L, it shall not exceed 3548/(kW, h); When the single-cylinder displacement of a four-stroke engine is greater than 0.04L, it shall not exceed 340g/(700 r/min
Speed ​​fluctuation rate
3.14 The content of carbon monoxide and hydrogen compounds during emergency operation of gasoline engines shall comply with the provisions of GB3842. 3.15 The gasoline engine shall be equipped with a speed governor (speed limiter). When the speed exceeds the set point, the speed governor shall be able to automatically control the maximum no-load speed. The stable speed regulation rate shall not exceed 15%, or be determined in consultation with the user. 3.16 When the gasoline engine is working with and without a pneumatic regulator, the difference in rated power shall not exceed 10%. 3.17 The maximum no-load stable speed with a speed governor shall not exceed 115% of the rated speed, or be agreed with the user. 3.18 The gasoline engine shall work normally at the specified longitudinal and lateral tilt angles, and the tilt angle value shall be agreed upon by the manufacturer and the user. 3.19 When the gasoline engine is working in a flammable or explosive environment, it must comply with user requirements and relevant regulations. 3.20 The gasoline engine's fuel tank and electrical equipment must be isolated from the exhaust system, and attention should be paid to fire prevention. 3.21
The surface protective layer of the gasoline engine should be firm and uniform, and should not have defects such as peeling and flaking. 3.22 The sealing surfaces and pipe joints of the gasoline engine are not allowed to leak oil, water or air. 3.23 The cleanliness limit of the gasoline engine should comply with the provisions of NJ324. 3.24 The noise limit of the gasoline engine shall comply with relevant regulations or be agreed upon with the user. 3.25 The vibration requirements of the gasoline engine shall comply with relevant regulations or be agreed upon with the user. 3.26 The effective sealing period of the gasoline engine shall be guaranteed to be no less than 12 months from the date of leaving the factory. 3.27 The warranty period of the gasoline engine is one year. Under the condition of complying with the provisions of the product manual, if damage occurs during the warranty period and there is a record of use, the manufacturer shall repair or replace the parts, components and time parts reported to be damaged due to poor quality free of charge. 3.28 When the gasoline engine is packed and delivered, the manufacturer shall provide necessary random spare parts, special tools, operation and maintenance instructions, packing list and other relevant technical documents. If the user has other requirements, it can be agreed with the manufacturer. 4 Inspection rules
4.1 The factory inspection of gasoline engines should be carried out one by one, and a product certificate should be issued for qualified products. 4.2 The delivery acceptance test rules of gasoline engines shall be negotiated by the manufacturer and the user and carried out in accordance with the provisions of this standard. 3
JB5136-91
4.3 The gasoline engine quality inspection shall be carried out regularly, and the counting and sampling procedure specified in GB2828 shall be used for a regular inspection and a sampling plan shall be used. According to the items specified in the unqualified classification listed in Table 1, combined with the gasoline engine product quality inspection sampling plan in Table 2, the table" Gasoline engine product quality unqualified classification Unqualified classification
Unqualified classification
Inspection level
Sample code
Number of samples n
Rated power Out of tolerance
Fuel consumption rate out of tolerance
Oil consumption rate out of tolerance
Unqualified name
Normal temperature start-up does not meet the requirements
Low oil pressure at no-load stable speed Insufficient oil pressure Sealing performance does not meet the requirements
Cleanliness out of tolerance
Unevenness of each cylinder out of tolerance
Hot engine start-up does not meet the requirements
Low temperature start-up meets the requirements
Assembly integrity does not meet the requirements
Noise out of tolerance
Stable speed regulation Out of tolerance
Highest stable speed at no load out of tolerance
Least stable speed at no load out of tolerance
Least no-load speed fluctuation rate out of tolerance
Shutdown during accumulation, performance test, oil consumption rate and lubricity measurement
Damage of non-main parts during accumulation, performance test, oil consumption rate and lubricity measurement
Rust-proof quality of exposed parts does not meet the requirements
Surface paint quality does not meet the requirements
Surface quality of castings and forgings does not meet the requirements||t t||Table must have cancer transmission
Table 2 Gasoline engine product inspection sampling plan
The AQL value and A, R in the sampling plan are calculated by the point method 3
Assessment according to user requirements
Assessment with governor
Stop once as a failure
One broken piece as a failure
Manufacturers and users can select items in the failure classification according to the different uses and structures of gasoline engines. The AQL value remains unchanged when the number of items increases or decreases.
5 Test method
JB5136-91
5.1 Gasoline engine performance test method shall be carried out in accordance with JB/T5144. 5.2 Gasoline engine reliability test shall be carried out in accordance with relevant regulations. 5.3 Gasoline engines shall be subject to durability assessment.
5.4 The determination of gasoline engine cleanliness shall be carried out in accordance with GB3821. 5.5 The determination of gasoline engine noise shall be carried out in accordance with the provisions of GB1859, and 5.6 The assessment of gasoline engine vibration shall be carried out in accordance with GB10399. 6 Marking, packaging and storage
The gasoline engine shall have a nameplate, on which the following shall be indicated: 6.1
Manufacturer name and trademark,
Gasoline engine model:
Rated power kW;
Net mass kg
Factory number:
Date of production year and month.
6.2 The gasoline engine shall be marked with the rotation direction, top dead center and ignition advance angle. The packaging box of the gasoline engine shall be safe and firm, and shall be moisture-proof and anti-fouling. A simple packaging method may also be used with the consent of the user. 6.3
Random spare parts, tools and product technical documents shall be fixed in the packaging box to prevent loosening. 6.4
The outside of the packaging box should be marked with:
Name and address of the manufacturer;
Product name and model:
Volume of the packaging box (length×width×height) mm; total mass kg
Factory number:
Factory date year and month:
There should be words such as "upward", "do not invert", "handle with care", "moisture-proof" or corresponding marks. 6.5 Gasoline engines should be stored in a dry, ventilated warehouse free of corrosive substances. Additional notes:
This standard was proposed and coordinated by the Tianjin Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Tianjin Jing Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry. Taiyuan Internal Combustion Engine Factory, Wuhan Engineering Machinery Factory of the Ministry of Railways and Shanghai Xiaojiang Engine Factory participated in the drafting of the standard.
The main drafter of this standard is Zhang Xiuying,
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