ISO 6855-3:2012 pdf download.Mopeds —Measurement method for gaseous exhaust emissions and fuelcon sumption — Part 3: Fuel consumption measurement at a constant speed.
6.1 Rider and riding position
6.1.1 The rider shall wear a close-fitting suit (one-piece) or similar clothing, a protective helmet, eye protection, boots and gloves.
6.1.2 The rider in the conditions given in 6.1.1 shall havea mass o175 kg ± 2 kgand be 1.75 m ± 0.02 m tall.
6.1.3 The rider shall be seated on the seat provided, with his/her feet on the footrests and his/her arms normally extended. This position shall allow the rider at all times to have proper control of the moped during the test.
The position of the rider should remain unchanged during the whole measurement; the description of the position shall be indicated in the test report or shall be replaced by photograph(s).
6.2 Test track
6.2.1 The total length of test track shall be the sum of the following sections:
a) the acceleration section to reach at the stabilized target test speed;
b) the test section to measure the fuel consumption;
c) the deceleration section to stop the test moped safely.
6.2.2 The test section shall be either long enough to consume the fuel of at least 10 mL or be longer than
300 m. The length of the test section shall be measured within the tolerance of 0,1 %.
6.2.3 The test road shall be flat, level, straight and smoothly paved. The road surface shall be dry and covered with asphalt, concrete or similar material, and free ofobstacles orwind barriers that might impede the measurement of the fuel consumption. The slope of the surface shall not exceed 0,5 % between any two points at least 2 m apart.
6.3 Ambient conditions for the road test
During data collecting periods, the wind shall be steady. The wind speed and the direction of the wind shall be measured continuously or with adequate frequency at a location where the wind force during fuel consumption measurement is representative.
The ambient conditions shall be within the following limits:
a) maximum wind speed: 3 m/s;
b maximum wind speed for gust: 5 m/s;
c) average wind speed, parallel: 3 m/s;
d) average wind speed, perpendicular: 2 m/s;
e) maximum relative humidity; 95 %;
f) air temperature: 278 K to 308 K.
6.1.1 The rider shall wear a close-fitting suit (one-piece) or similar clothing, a protective helmet, eye protection, boots and gloves.
6.1.2 The rider in the conditions given in 6.1.1 shall havea mass o175 kg ± 2 kgand be 1.75 m ± 0.02 m tall.
6.1.3 The rider shall be seated on the seat provided, with his/her feet on the footrests and his/her arms normally extended. This position shall allow the rider at all times to have proper control of the moped during the test.
The position of the rider should remain unchanged during the whole measurement; the description of the position shall be indicated in the test report or shall be replaced by photograph(s).
6.2 Test track
6.2.1 The total length of test track shall be the sum of the following sections:
a) the acceleration section to reach at the stabilized target test speed;
b) the test section to measure the fuel consumption;
c) the deceleration section to stop the test moped safely.
6.2.2 The test section shall be either long enough to consume the fuel of at least 10 mL or be longer than
300 m. The length of the test section shall be measured within the tolerance of 0,1 %.
6.2.3 The test road shall be flat, level, straight and smoothly paved. The road surface shall be dry and covered with asphalt, concrete or similar material, and free ofobstacles orwind barriers that might impede the measurement of the fuel consumption. The slope of the surface shall not exceed 0,5 % between any two points at least 2 m apart.
6.3 Ambient conditions for the road test
During data collecting periods, the wind shall be steady. The wind speed and the direction of the wind shall be measured continuously or with adequate frequency at a location where the wind force during fuel consumption measurement is representative.
The ambient conditions shall be within the following limits:
a) maximum wind speed: 3 m/s;
b maximum wind speed for gust: 5 m/s;
c) average wind speed, parallel: 3 m/s;
d) average wind speed, perpendicular: 2 m/s;
e) maximum relative humidity; 95 %;
f) air temperature: 278 K to 308 K.
