Standard No.:	GB/T 14097-2018
Chinese Name:	往复式内燃机 噪声限值
English Name:	Reciprocating internal combustion engines—Limit values of emitted noise
Professional Classification:	J91 Internal combustion engine and auxiliary equipment
ICS Classification:	27.020
Issued by:
Issued on:	2018-02-06
Implemented on:	2018-09-01
Status:	VALID
Replace:	GB/T14097-1999
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	180 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the limit values of four sound power levels of noise emitted by the reciprocating internal combustion engines.

This standard is applicable to the reciprocating internal combustion engines as defined in GB/T 21404 (hereinafter referred to as "engines" unless otherwise specified).

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 1859.1 Reciprocating internal combustion engines - Measurement of sound power level using sound pressure - Part 1: Engineering method
GB/T 1859.3 Reciprocating internal combustion engines - Measurement of sound power level using sound pressure - Part 3: Precision methods for hemi-anechoic rooms
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 21404 Internal combustion engine - Determination and method for the measurement of engine power - General Requirements

3 Terms and definitions

For the purpose of this standard, the following terms and definitions given in GB/T 1859.1, GB/T 1859.3 and GB/T 21404 as well as the following ones apply.
3.1

engine noise grade

divided by engine noise amplitude
3.2

engine noise grade 1; ENG1

engines with measured sound power level under all operating conditions less than or equal to the limit value of its corresponding Grade 1 sound power level