Volvo B21 engine

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Start off with a brief Introduction to the particular Engine.

Unique Attributes
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While there is a carburated version these are among the first production non-luxury passenger vehicle engines equipped with fuel injection. This was not a conventional efi as we know today, but rather a form of mechanical engine management dubbed K-jet. K-jet is a CI-S (continuous injection system) The injectors literaly run continuous, not in short bursts as modern efi examples. The principle of CI-S is to continuously measure the airflow to control the amount of fuel supplied to the engine. This is achieved using an airflow control unit, consisting of airflow sensor, and fuel distributor. Fuel regulation is simply controled via pressure changes.

Criticisms
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Design quirks and oddities
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Awards
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