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Two-stroke gasoline engine lubricants
World of petroleum products, 2022The article considers the design and lubrication of small 2-stroke engines installed on snowmobiles, quad bikes, motorcycles and drones. The compositions of the 2-stroke engine oils, base oils and additives, actual specification JASO, NMMA, API, TISI and ISO are analysed. Concern the short characteristics of JASO engine test methods.
A.B. Ivanov +2 more
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SAE Technical Paper Series, 1980
<div class="htmlview paragraph">COST, WEIGTH AND POWER OUTPUT, render it unlikely that 2-stroke engines for chain saws and related applications can be superseded by any other propulsion system in the near future.</div> <div class="htmlview paragraph">In order to remain competitive in the future, 2-stroke engines - and thus cylinders ...
Paul Knöpfler +2 more
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<div class="htmlview paragraph">COST, WEIGTH AND POWER OUTPUT, render it unlikely that 2-stroke engines for chain saws and related applications can be superseded by any other propulsion system in the near future.</div> <div class="htmlview paragraph">In order to remain competitive in the future, 2-stroke engines - and thus cylinders ...
Paul Knöpfler +2 more
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Development of Two Stroke Engines With Direct Injection
SAE Technical Paper Series, 1995<div class="htmlview paragraph">In order to develop modern two-stroke engines with low fuel consumption, respectively with low exhaust emissions, two alternative development areas - the mixture formation and the scavenging system - have been correlated.
MARTORANO, LUIGI +3 more
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Features of an Atkinson Two-Stroke Engine
SAE Technical Paper Series, 1994<div class="htmlview paragraph">A two-stroke Atkinson cycle engine is described. The engine has uniflow stratified mixture scavenging with a variably phased spherical rotary valve in the cylinder head and exhaust ports in the cylinder wall. These features combined in this configuration result in reduced fuel consumption, higher specific power ...
John Brooks, Alan Lane
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Development of Catalysts for Two-Stroke Engines
SAE Technical Paper Series, 1999<div class="htmlview paragraph">The Emission Regulations for Motorcycles in Japan was put into effect in October 1998 with the goal of reducing the total hydrocarbon emissions from motorcycles in the country to around 50% of the present amount.</div> <div class="htmlview paragraph">These regulations initiated a need to develop ...
Atsuo Suzuki +2 more
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Scavenging the two-stroke engine
Progress in Energy and Combustion Science, 1990Abstract The scavenging process is the most important factor controlling the efficiency and performance characteristics of a two-stroke-cycle engine. This article reviews and assesses experimental and theoretical methods, which have been applied during the past three decades, to evaluate the success of the scavenging process.
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SAE Technical Paper Series, 1998
<div class="htmlview paragraph">An innovative rotary engine uses a rotor that executes pendulum-like oscillatory rotation. This is converted into uniform rotation of the drive shaft by a simple mechanism. The engine also employs parameter resonance. The new design is compact and lightweight.
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<div class="htmlview paragraph">An innovative rotary engine uses a rotor that executes pendulum-like oscillatory rotation. This is converted into uniform rotation of the drive shaft by a simple mechanism. The engine also employs parameter resonance. The new design is compact and lightweight.
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Investigations on Scavenging of Two-Stroke Engines
SAE Technical Paper Series, 1988<div class="htmlview paragraph">Compared with experimental and theoretical approaches modeling of the scavenging process in a two-stroke engine offers great advantages on account of its simplicity and economy. The clear definition of influencing factors and a better physical interpretation of the model laws governing the flow process help to ...
Daniel S. Sanborn, Nabi Dedeoglu
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1992
The absence of the separate induction and exhaust strokes in the two-stroke engine is the fundamental difference from four-stroke engines. In two-stroke engines, the gas exchange or scavenging process can have the induction and exhaust processes occurring simultaneously.
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The absence of the separate induction and exhaust strokes in the two-stroke engine is the fundamental difference from four-stroke engines. In two-stroke engines, the gas exchange or scavenging process can have the induction and exhaust processes occurring simultaneously.
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TWO Stroke Engines - The Lotus Approach
SAE Technical Paper Series, 1992<div class="htmlview paragraph">The recent interest in two-stroke engines for automotive use has produced powerplants of such divergence that as yet, no clear outlook on a likely design is evident. The only common similarity between all the published engines is direct fuel injection.
David W. Blundell, Malcolm H. Sandford
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