Good read.
Quote:
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The main concept for reducing pumping loss is the late intake valve closing (LIVC) Miller cycle with high compression ratio. This enables a high expansion ratio even in LIVC state. In the HR12DDR, intake valve closing (IVC) is retarded until 100 ° after bottom dead center (ABDC)—corresponding to an effective CR of about 7:1. To reduce the rest of the pumping loss on un-boosted partial load, Nissan combined internal EGR with exhaust continuously variable valve timing (CVTC) and external EGR.
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And a magnetic clutch driven supercharger. Like Mad Max?
