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These blow-by gases, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge. Excessive crankcase pressure can furthermore lead to engine oil leaks past the crankshaft seals and other engine seals and gaskets. Therefore, it becomes imperative that a crankcase ventilation system be used.
Bent connecting rod after Hydrolock Same connecting rod, turned 90°. Hydrolock (a shorthand notation for hydrostatic lock or hydraulic lock) is an abnormal condition of any device which is designed to compress a gas by mechanically restraining it; most commonly the reciprocating internal combustion engine, the case this article refers to unless otherwise noted.
DKW RT 250 (1952–1953) motorcycle engine. A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder.This engine is often used for motorcycles, motor scooters, motorized bicycles, go-karts, all-terrain vehicles, radio-controlled vehicles, power tools and garden machinery (such as chainsaws, lawn mowers, cultivators, and string trimmers).
Most engines require one or more systems to start and shut down the engine and to control parameters such as the power, speed, torque, pollution, combustion temperature, and efficiency and to stabilise the engine from modes of operation that may induce self-damage such as pre-ignition. Such systems may be referred to as engine control units.
The combustion cycle can be either two-stroke (which results in a lighter engine for a given power output) [3] [4] or four-stroke (which produce lower levels of exhaust gas emissions). [5] [6] The fuel is usually either petrol or diesel. [7] In 1973, a small Wankel (rotary) engine manufactured by NSU was used in a lawn mower. [8]
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Stomach pain or tummy troubles are among the most common ailments that affect children and adults alike. Feelings of bloating, cramping, constipation or nausea often occur because of something ...
The mower is a variation of the petrol-powered rotary push lawn mower, but uses a fan above the mower's spinning blades to allow the mower's body to hover over the lawn. The mower is claimed to be more manoeuvrable and easier to push than wheeled petrol mowers, while delivering similar results.