Description
The "Nissan PLASMA" (Powerful & Economic, Light, Accurate, Silent, Mighty, Advanced) MA09ERT was based on the K10ET engine; Nissan attempted to improve performance and response by adding a supercharger to the (already turbocharged) MA10ET engine, which is a four-cylinder water-cooled OHC engine with a V-type valve arrangement and hemispherical combustion chambers, with sequential fuel injection.
The supercharger improved the response and the output in the low-rpm region (where turbochargers are typically less effective), and a new larger HT10 turbocharger aimed to improve output in the high-rpm regions. An intercooler and an updated intake manifold were added, the latter having a much larger throttle body and improved fuel rail. The result was an increase in output to 110ps (roughly 108bhp) from 74ps, and a much broader range of torque. Other changes included a reduction of engine capacity from 988 cc to 930 cc; this strengthened the engine by increasing the bore wall thicknesses by 1 mm, and allowed cars using it to enter competition classes not otherwise possible due to rules on forced induction.
The first prototypes of these engines were installed in the March Superturbo R/March R (EK10FR type) in 1988, shortly after the engine was installed in the March Superturbo.
The MA09ERT was the first compound-charged engine available in Japan; compound charging combines the increased low-speed torque of supercharging with the increased high-speed torque and power of turbocharging. The presence of the supercharger also mimizes the effects of turbo lag.
Read more about this topic: Nissan MA MA09ERT
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