Patent ID: 6286466
Filing Date: 2001-09-11
Classification: F02B,F02D,Y02T

Abstract:
A piston internal-combustion engine, comprising a control system for controlling a stroke sequence of an engine-operating process as a function of engine operating parameters, the process has a variable cycle of at least four strokes, and devices operatively arranged to prevent a pushing of a charge out of a combustion space of the piston internal-combustion engine before at least one operating parameter has reached a limit value defined therefor wherein at least one intake valve, at least one exhaust valve and at least one injection nozzle per cylinder are provided and are configured so as to be controlled by the control system via electric signals and comprising a control system for controlling a stroke sequence of an engine-operating process as a function of engine operating parameters, the process has a variable cycle of at least four strokes, and devices operatively arranged to prevent a pushing of a charge out of a combustion space of the piston internal-combustion engine before at least one operating parameter has reached a limit value defined therefor a sensor is operatively connected to the control system for sensing air-fuel ratio in the combustion space, whereby, as a function of the sensed ratio the number and sequence of the strokes of the engine-operating process is automatically controllable.