ISO 5128:2023 音響 — 車内騒音の測定 | ページ 6

3.1

Mass

3.1.1

kerb mass

mass of the vehicle, with its fuel tank(s) filled to at least 90 % of its or their capacities, including the mass of the driver, of the fuel and liquids, fitted with the standard equipment in accordance with the manufacturer's specifications and, when they are fitted, the mass of the bodywork, the cabin, the coupling and the spare wheel(s) as well as the tools

[SOURCE:ISO 1176:1990, 4.6, modified — extended based on the today’s applied principles used in regulations for sound emission of vehicles (see UN R51.03).]

3.1.2

test mass

m_t

mass of the vehicle subject to testing inclusive all equipment and payload

3.1.3

driver mass

m_d

nominal mass of a driver that shall be 75 kg (subdivided into 68 kg occupant mass at the seat and 7 kg luggage mass)

Note 1 to entry: According to ISO 2416.

3.2

test cycle

test conditions comprising acceleration, deceleration, steady speed and standstill to establish typical operation of a vehicle under either urban, suburban, rural or motorway condition

3.3

total power

P_n

sum of net power of all available propulsion sources

Note 1 to entry: According to ISO 1585, for vehicles with combustion engine only, P_n is the net power of the combustion engine expressed in kilowatt.

Note 2 to entry: According to UN R85, for vehicles with electric propulsion only, P_n is the net power over a time period of 5 minutes, expressed in kilowatt.

Note 3 to entry: According to UN R51, for vehicles with hybrid drive line, P_n is the sum of the net power of all available propulsion sources, expressed in kilowatt.

3.4

rated engine speed

S

engine speed at which the combustion engine develops its rated maximum net power as stated by the manufacturer

Note 1 to entry: If the rated maximum net power is reached at several engine speeds, S used in this document is the highest engine speed at which the rated maximum net power is reached.

Note 2 to entry: ISO 80000-3 defines this term as “rated engine rotational frequency”. The term “rated engine speed” was retained due to its common understanding by practitioners and its use in government regulations.

3.5

active sound system

system that is installed to a vehicle for producing exterior or interior sound, such as but not limited to sound actuators, regardless of its mounting position

3.6

modes

distinct driver-selectable condition which does affect powertrain and transmission setup, such that the emitted sound of the vehicle may vary, including distinct driver-selectable modes which can affect the sound emitted by sound enhancement systems

3.7

Irregularities

3.7.1

irregularity

maximum distance of a surface from the measurement edge of the straightedge between two contact points of the straightedge when placed perpendicular to the surface

Note 1 to entry: Measured in accordance with EN 13036-7.

3.7.2

longitudinal irregularity

irregularity (3.7.1) in the direction parallel to the longitudinal axis of the track

3.7.3

transverse irregularity

irregularity (3.7.1) in the direction perpendicular to the longitudinal axis of the track

3.8

mean profile depth

MPD

average value of the height difference between the profile and a horizontal line through the highest peak (the peak level) over a 100-mm long baseline

3.9

maximum aggregate size

aggregate upper sieve size (D) based on all-in aggregate grading category of GA90

Note 1 to entry: According to EN 13043.

3.10

Vehicle category M

3.10.1

category M1

vehicles used for the carriage of passengers and comprising no more than eight seats in addition to the driver's seat

3.10.2

category M2

vehicles used for the carriage of passengers and comprising more than eight seats in addition to the driver's seat and having a kerb mass (3.1.1) plus the maximum allowable payload not exceeding 5 000 kg

3.10.3

category M3

vehicles used for the carriage of passengers and comprising more than eight seats in addition to the driver's seat and having a kerb mass (3.1.1) plus the maximum allowable payload exceeding 5 000 kg

3.11

Vehicle category N

3.11.1

category N1

vehicles used for the carriage of goods and having a kerb mass (3.1.1) plus the maximum allowable payload not exceeding 3 500 kg

3.11.2

category N2

vehicles used for the carriage of goods and having a kerb mass (3.1.1) plus the maximum allowable payload exceeding 3 500 kg but not exceeding 12 000 kg

3.11.3

category N3

vehicles used for the carriage of goods and having a kerb mass (3.1.1) plus the maximum allowable payload exceeding 12 000 kg

3.11.4

light duty vehicle

LDV

vehicle primarily used to transport passengers and cargo (e.g., cars, vans, SUVs, pickup trucks), with category M1 and N1 and N2 with m ≤ 4536 kg and P_n ≥ 150 kW may be deemed as LDV. (i.e., Class 1 through Class 2 Vehicles, as designated by the U.S. Department of Transportation)

3.11.5

heavy duty vehicle

HDV

vehicle other than defined in 3.11.4 with a maximum allowable payload of more than 4 536 kg