ISO 362-1:2015 加速する道路車両から放出される騒音の測定  —  工学的手法  —  パート1：MおよびNカテゴリ | ページ 6

3.1.1

kerb mass

Note 1 to entry: The definition of kerb mass can vary from country to country, but in this part of ISO 362, it refers to the definition contained in ISO 1176.

3.1.2

maximum authorized mass

kerb mass plus the maximum allowable payload

3.1.3

unladen vehicle mass

3.1.4

driver mass

nominal mass of a driver

3.1.5

mass in running order

Note 1 to entry: The driver's mass is calculated in accordance with ISO 2416.

3.1.6

maximum axle (group of axles) capacity

permissible mass corresponding to the maximum mass that can be carried by the axle (group of axles) as defined by the vehicle manufacturer, not exceeding the axle manufacturer's specifications

3.1.7

unladen axle (group of axles) load

actual mass carried by the axle (group of axles) in an unladen condition

Note 1 to entry: The unladen vehicle mass is equal to the sum of the unladen axles (group of axles) load.

3.1.8

extra loading

mass which is added to the unladen vehicle mass

3.1.9

laden axle (group of axles) load

actual mass carried by the axle (group of axles) in a laden condition

3.2

power-to-mass ratio index

PMR

3.2.1

total engine power

sum of all power from available propulsion sources

3.3

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 part of ISO 362 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.

3.4.1

category L

motor vehicles with fewer than four wheels

Note 1 to entry: United Nations Economic Commission for Europe (UNECE) document TRANS/WP.29/78/Rev.1/Amend.4 (26 April 2005) extended the L category to four-wheeled vehicles as defined by L6 and L7.

3.4.1.1

category L1 and L2

mopeds

Note 1 to entry: See ISO 9645 for further details.

3.4.1.2

category L3

two-wheeled motor vehicles with an engine cylinder capacity greater than 50 cm³ or maximum speed greater than 50 km/h

3.4.1.3

category L4

three-wheeled motor vehicles with an engine cylinder capacity greater than 50 cm³ or maximum speed greater than 50 km/h, the wheels being attached asymmetrically along the longitudinal vehicle axis

3.4.1.4

category L5

three-wheeled motor vehicles with an engine cylinder capacity greater than 50 cm³ or maximum speed greater than 50 km/h, having a gross vehicle mass rating not exceeding 1 000 kg and wheels attached symmetrically along the longitudinal vehicle axis

3.4.1.5

category L6

four-wheeled vehicles whose unladen mass is not more than 350 kg, not including the mass of the batteries in the case of electric vehicles, whose maximum design speed is not more than 45 km/h and whose engine cylinder capacity does not exceed 50 cm³ for spark (positive) ignition engines, or whose maximum net power output does not exceed 4 kW in the case of other internal combustion engines, or whose maximum continuous rated power does not exceed 4 kW in the case of electric engines

3.4.1.6

category L7

four-wheeled vehicles, other than those classified as category L6, whose unladen mass is not more than 400 kg (550 kg for vehicles intended for carrying goods), not including the mass of the batteries in the case of electric vehicles, and whose maximum continuous rated power does not exceed 15 kW

3.4.2

category M

power-driven vehicles having at least four wheels and used for the carriage of passengers

3.4.2.1

category M1

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

3.4.2.2

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 maximum mass not exceeding 5 000 kg

Note 1 to entry: In this definition, “maximum mass” is equivalent to “maximum authorized mass” used elsewhere in this part of ISO 362.

3.4.2.3

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 maximum mass exceeding 5 000 kg

Note 1 to entry: In this definition, “maximum mass” is equivalent to “maximum authorized mass” used elsewhere in this part of ISO 362.

3.4.2.4

incomplete vehicle of category M2 or M3:

incomplete vehicle with just chassis rails or tube assembly, power train, and axles, which is intended to be completed with bodywork, customized to the needs of the transport operator

3.4.3

category N

power-driven vehicles having at least four wheels and used for the carriage of goods

3.4.3.1

category N1

vehicles used for the carriage of goods and having a maximum authorized mass not exceeding 3 500 kg

3.4.3.2

category N2

vehicles used for the carriage of goods and having a maximum authorized mass exceeding 3 500 kg but not exceeding 12 000 kg

3.4.3.3

category N3

vehicles used for the carriage of goods and having a maximum authorized mass exceeding 12 000 kg

3.5

reference point

point depending on the design and category of the vehicle

3.5.1

reference point for category M1 and N1 vehicles and M2 having a maximum authorized mass not exceeding 3 500 kg

3.5.2

reference point for category M2 having a maximum authorized mass exceeding 3 500 kg, M3, N2, and N3 vehicles

3.6

target acceleration

acceleration at a partial throttle condition in urban traffic, derived from statistical investigations

Note 1 to entry: Refer to Annex A for more detailed explanations.

3.7

reference acceleration

required acceleration during the acceleration test on the test track

Note 1 to entry: Refer to Annex A for more detailed explanations.

3.8

gear ratio weighting factor

k

dimensionless quantity used to combine the test results of two gear ratios for the acceleration test and the constant-speed test

3.9

partial power factor

k_P

dimensionless quantity used for the weighted combination of the test results of the acceleration test and the constant-speed test for vehicles of categories M1, N1, and M2 having a maximum authorized mass not exceeding 3 500 kg

Note 1 to entry: Refer to Annex A for more detailed explanations.

3.10

pre-acceleration

application of acceleration control device prior to the position AA' for the purpose of achieving stable acceleration between AA' and BB'

Note 1 to entry: See Figure 1 for additional details.

3.11

locked gear ratio

control of transmission such that the transmission gear cannot change during a test

3.12

engine

power source without detachable accessories

Note 1 to entry: Power source includes in this context all sources of motive power; for example, electric or hydraulic power sources used alone or in combination with other power sources.

3.13

test track length

l₁₀

length of test track used in the calculation of acceleration from points PP' to BB'

3.14

test track length

l₂₀

length of test track used in the calculation of acceleration from points AA' to BB'

3.15

target engine rotational speed

n_{target BB’}

interval between 70 % and 74 % of the speed S for vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg and N2 and an interval between 85 % and 89 % of the speed S for vehicles of category M3 and N3

3.16

target vehicle speed

v_{target BB’}

vehicle speed of 35 km/h ± 5 km/h