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2.
Strato-charged
Engine
2-1 Outline
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Efforts to the exhaust gas regulations
Husqvarna Zenoah has developed its own "Strato-charged
Engine" as a two-stroke engine compliant with exhaust gas
regulations since 1999, and it has been in compliance with the
regulations of each country starting from the US.
The Strato-charged engine realizes clean exhaust while taking
advantage of two-stroke engine.
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Structure
Normally, approximately 30% of unburned gas is discharged in a two-stroke engine, because air-fuel
mixture pushes out the combustion gas. However, Husqvarna Zenoah's Strato-charged engine adopts
"air-guided stratified scavenging system" which introduces leading air to the scavenging port separately
from the air-fuel mixture. The leading air pushes out the combustion gas in order to prevent blowing out
of unburned gas resulting in reduction of the concentration of hydrocarbons in the exhaust gas.
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Features
Because it does not use any special equipment, it is lightweight with a simple structure.
Excellent cooling performance promotes stable output performance even in continuous operation in
summer.
It realizes low fuel consumption of 40% or less.
(In comparison with our previous model)
混合気
Lead Air Venturi
Air-fuel Mixture Venturi
Carburetor
Scavenging Port
Piston Groove
Lead Air Intake Port
Air-fuel Mixture
Intake Port
