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Old 29 June 2013, 12:23   #11
m chappelow's Avatar
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It's called a throttle because the butterfly valve / flap throttles or strangles the air flow ; )

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Old 29 June 2013, 14:46   #12
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Originally Posted by Nos4r2 View Post
And most fuel injection systems have a butterfly valve too.
All except BMW AFAIK. They control inlet valve lift electro-mechanically to throttle airflow

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Old 29 June 2013, 15:41   #13
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And also, most small 2 stroke outboards control the first half of power curve using timing.

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