Patent ID: RE43034

Claim:
An engine intake control apparatus for an engine that comprises at least one combustion chamber operatively connected to an intake port and an intake valve associated with each intake port, wherein the intake valve is adapted to open and close the intake port, the intake control apparatus comprising: a variable valve operating mechanism configured and arranged to selectively change a valve closing timing and a valve lift amount of the intake valve; and a controller configured and arranged to control the variable valve operating mechanism when the engine is in a low load condition, wherein , the controller using the variable valve operating mechanism to set the valve closing timing is determined of the intake valve such that an actual compression ratio of the engine is reduced relative to the actual compression ratio when the engine is operating in a high load condition upon detecting that the engine is in a low load condition and that a temperature of a combustion chamber wall is less than or equal to a predetermined value , and wherein the controller using the variable valve operating mechanism to set the valve lift amount is of the intake valve to be smaller when the engine is in the low load condition relative to the valve lift amount of the intake valve set by the controller when the engine is in the high load condition upon detecting that the engine is in the low load condition and that the temperature of the combustion chamber wall is less than or equal to the predetermined value .