Nissan Motor Company Limited

Tomohiko Tatara

Hiroyuki Suzuki

Toshikazu Shiino

An internal combustion engine () alters an effective compression ratio from an effective compression ratio for a start-up operation to a larger effective compression ratio for a normal operation when an engine rotation speed (NE) increases beyond a resonance rotation speed region during cranking. A controller () determines whether or not the engine () has reached a combustion possible state on the basis of the engine rotation speed (NE) during cranking and an operating parameter (PA, TA, TW, P_Rail, V_Ang) other than the engine rotation speed (NE) (S, S, S). When the determination is negative, the controller () inhibits fuel supply to the engine () by a fuel supply device (), even when the engine rotation speed has increased beyond the resonance rotation speed region (S). In so doing, a combustion defect such as a misfire is prevented.

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Yokohama, Japan

Tomohiko Tatara