Patent ID: 8275539
Filing Date: 2012-09-25
Classification: F01L,F02D,Y02T

Abstract:
1. A control system for an internal combustion engine including a variable valve-operating mechanism which is capable of continuously changing a lift of an intake valve, and an intake air amount-adjusting valve which is disposed at a location upstream of the intake valve and is capable of adjusting an intake air amount, comprising: oil amount-determining means for determining whether or not an oil amount of lubrication oil that lubricates the variable valve-operating mechanism reaches a predetermined amount; variable valve-operating mechanism control means for inhibiting an operation of the variable valve-operating mechanism and holding a lift of the intake valve at a predetermined lift except when it is determined by said oil amount-determining means that the oil amount reaches the predetermined amount; and intake air amount-adjusting valve control means for controlling the intake air amount by changing an opening of the intake air amount-adjusting valve when the operation of the variable valve-operating mechanism is inhibited by said variable valve-operating mechanism control means.