How Does a Combustion Engine's Valvetrain Work?
Take a look at what really happens as the valves usher fuel and air into the engine and let the exhaust out.
This installment of Toyota's Engines 101 series takes a closer look at one of the most critical parts of an engine: its valvetrain. The video establishes what parts comprise a valvetrain, looks at variable valve timing technology, and considers the effect of alternatives to the Otto cycle valve timing scheme, such as the Atkinson cycle.
This cutaway image reveals the secrets of Toyota's 2ZR engine. TOYOTA
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