16.3 Mechanical Function of the Emission Control System
In general
Solution for exhaust gas is based on two-stroke single-cylinder motor and carburetor, which adopts
gas-intake device to maintain qualified exhaust gas standard, meanwhile the fuel evaporative
exhaust gas adopts active carbon canister.
*
Engine improvement
Improve the engine elements such as spark plug, combustor, compression ratio, ignition time,
Emission system, etc. in order to meet high intake and Emission efficiency and try for enhance
combustion efficiency.
*
Gas-intake device
Intake gas into gas Emission tube, make incompletely burnt CO and HC react to form harmless
gas.
Canister oxidation catalyst in the
center of gas Emission tube
actualizes oxidation of CO, HC and
NO
X
.
- Adjustable parameter and advised set value
Adjustment of idle speed – engine speed
1500±100rpm/min dense of CO 0.5-
1.2%
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