Apparatus for controlling operation of inlet and exhaust valves and supply of fuel to selected cylinders of all of multi-cylinder I. C. engine

摘要

An apparatus for controlling the operation of inlet and exhaust valves and the supply of fuel to selected cylinders of all of a multi-cylinder internal combustion engine. The inlet and exhaust valves for induction and exhaust of the selected cylinders of all are closed and the supply of fuel to them is cut off to operate the engine on the remaining cylinders of all. According to the invention, a detector to detect a predetermined control event in which the engine is to be decelerated is provided. Also provided is a valve operation restoring device for causing restoration of the disabled valves when said detector detects the predetermined control event to let the disabled cylinders to pump air to achieve effective engine braking.