An object of this invention is to appropriately control the valve timing (VT) even in a case where a plurality of local maximum points or local minimum points exist on a characteristic line representing a relation between the VT and an air amount. An engin...

An object of the present invention is to provide a control system for a multi-fuel internal combustion engine capable of using gaseous fuel and liquid fuel, with which variation in an air-fuel ratio of an air-fuel mixture following a switch in the fuel use...

In a direct injection gasoline engine, at acceleration operation, an amount of internal EGR is increased by advancing exhaust valve closing timing, and also fuel injection pressure is increased. In this case, range of increase in fuel injection pressure is...

Method of controlling knocking in an internal combustion engine (1) equipped with a device (11) for controlling the opening of inlet valves (6); the control method comprises the phases of: determining the occurrence of an excessive knocking in the cylinder...

There is provided, in one aspect of the present description, an internal combustion engine system. In one example, the system comprises a controller configured to control an intake valve closing timing varying mechanism to vary a closing timing of the inta...

An electronic control unit corrects ignition timing according to changes in an internal EGR amount accompanying actuation of a variable valve actuation mechanism used in an internal combustion engine. The electronic control unit computes a base correction ...

An electronic control unit of an internal combustion engine computes a remaining combusted gas amount M egr1 , which exists in a cylinder immediately before an intake valve is opened, based on an intake pipe pressure Pm, an engine speed NE, and an intake v...

The present invention is intended to provide a control system for an direct injection internal combustion engine capable of effectively reducing the amounts of both HC and NOx exhausted from a combustion chamber during a period from the start of the engine...

Four-stroke Otto engine comprises at least one camshaft for the inlet valves and at least one camshaft for the outlet valves. The camshafts have an adjusting device for phase displacement. The Otto engine is designed so that during late adjustment of the i...