5000,S Turbo Diesel L5-1986cc 2.0L DSL SOHC Turbo (DE) (1982)
Turbocharger: Description and Operation
The turbocharger is an exhaust driven device which compresses the air/fuel mixture to increase engine power on a demand basis.
A turbine in the exhaust gas flow is connected through a shaft to the impeller (compressor). During normal, steady operation, the turbine does not
rotate with sufficient speed to boost pressure to compress the air/fuel mixture. As engine speed increases, the mixture is compressed, allowing the denser
mixture to enter the combustion chambers and develop more engine power during the combustion cycle.
The intake manifold boost pressure is controlled by a wastegate valve which is used to bypass a portion of the exhaust gasses around the turbine at a
predetermined point in the engine cycle, limiting the boost pressure.