Patent ID: 7823550

Claim:
An engine equipped with an adjustable valve timing mechanism, comprising: an inlet valve opening term varying mechanism, which is included in said adjustable valve timing mechanism, varying an opening term of an inlet valve; and an inlet valve opening term controller controlling said inlet valve opening term varying mechanism according to a running state of the engine, said inlet valve opening term controller setting the opening term of the inlet valve to a first inlet term when the engine runs at a predetermined high load and a predetermined high speed, said inlet valve opening term controller also setting the opening term of the inlet valve to a second inlet term which is longer than the first inlet term, which has a starting timing of the inlet valve opening retarded compared to the starting timing of the inlet valve opening in the first inlet term, and has a termination timing of the inlet valve opening in the second inlet term retarded compared to the termination timing of the inlet valve opening in the first inlet term, when the engine runs at a predetermined low load, lower than the predetermined high load, and a predetermined low speed, slower than the predetermined high speed.