QC/T 691-2011Technical specifications for mono-fuel natural gas vehicle engines (English PDF)

Foreword

This standard supersedes QC/T 691-2002 Technical specification of Single-fuel Natural Gas Vehicle Engine The normative references in the former standard have been superseded by other references; therefore, this revision focuses on the changes of the references. The revision is concentrated on the drainage requirement and test methods of engine and technical requirements for special natural gas device and its installation. The revision for this standard covers the liquefied natural gas engine.

1 Scope

This standard specifies single-fuel natural gas vehicle engine (including compressed natural gas engine and liquid spray free liquefied natural gas engine) in terms of technical requirements, test methods, inspection rules and marking, packaging, transport and storage.

This standard is applicable to single-fuel vehicle engine for the following. nominal working pressure of compressed natural gas cylinder is less than or equal to 20MPa and for which nominal working pressure of liquefied natural gas cylinder is less than or equal to 1.6MPa.

2 Normative References

The following documents are indispensable for the application of this standard. For dated reference, only the dated edition applies. For undated documents, the latest edition of the normative document (including all the amendments) referred to applies.

GB/T 1147.1 Small and Medium Power Internal Combustion Engines - Part 1. General Requirements

GB/T 1859 Reciprocating Internal Combustion Engines - Measurement of Emitted Airborne Noise - Engineering Method and Survey Method

GB 7258 Safety Specifications for Power-driven Vehicles Operating on Roads

GB 11340 Limits and Measurement Methods for Crankcase Pollutants from Heavy-Duty Vehicles Equipped with P.I Engines

GB 14023 Vehicles Boats and Internal Combustion Engine Driven Devices - Radio disturbance characteristics - Limits and Methods of Measurement

GB 14097 Noise Limits for Small and Medium Power Diesel Engines

GB 17691 Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles (III, IV, V)

GB/T 17692 Measurement Methods of Net Power for Automotive Engines

GB/T 17895 Natural Gas Vehicle and Liquefied Petroleum Gas Vehicle - Vocabulary

GB 18047 Compressed Natural Gas as Vehicle Fuel

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 18352.3 Limits and Measurement Methods for Emissions from Light-duty Vehicles (III, IV)

GB/T 19055 Reliability Test Methods for Motor Vehicle Engines

GB/T 19204 General Characteristics of Liquefied Natural Gas

GB/T 19240 Mounting Requirements of Special Equipment for Compressed Natural Vehicles

GB/T 20734 Mounting Requirements for Liquefied Natural Gas Vehicle Special Equipment

GB 20890 Test Procedures and Requirements of Durability of Emission Control Systems for Heavy-Duty Vehicles

GB/T 23335 Natural Gas Vehicles - Engineering Approval Evaluation Program

HJ 438 Durability of Emission Control Systems of Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles

QC/T 245 Technical Specifications for Isolated Plant of Compressed Natural Gas Vehicle

QC/T 526