Wolf Blaze - Environmental Protection System

17
USER’S MANUAL
Instructions to Users
Environmental protection device
Emission Standards of Motorcycles (Stage III , under the running mode)
Unit: g/km
Emitted pollutants
Two-wheel vehicle
CO
2.0
HC
0.8
NOx
0.15
Emission Standards of Mopeds (Stage III , under the running mode)
Unit: g/km
Emitted pollutants
Two-wheel vehicle
CO
1.0
HC + NOx
1.2
Limits of exhaust pollutants of motorcycle/mopeds under idle conditions
In case of idle type approval test, the volume concentration of emitted CO is
≤3.8%; and the volume concentration of emitted HC is ≤800×10-6;
In case of Production consistency check test, the volume concentration of emitted
CO is ≤4.0%; and the volume concentration of emitted HC is ≤1000×10-6.
The environmental protection device is mainly a two-in-one air
compensating valve (air pump) combining a one-way leaf valve
and a secondary air control valve. By making use of the engines
vacuum pulsation, the air pump controls the amount of air
needed to enter the exhaust port through the one-way leaf valve
and the secondary air control valve. This fresh air enters the
exhaust passage of the engine under the action of the air pump.
Unburned fuel vapor discharged from the engine in its exhaust
is then consumed. Thusly this device reduces the exhaust
pollution of the vehicle, and ensures that the vehicles exhaust
meets National Stage III emission standards.