The disclosure relates to a method for operating a reciprocating piston engine having a valve controller, the method comprising five operating phases (Ph, Ph, Ph, Ph, Ph), namely a regular combustion engine operation (Ph), an overrun operation (Ph), a shutdown process (Ph), a restart (Ph), as well…
A combustion engine comprises a main combustion cylinder configured to enable a piston to move therein; a main valve configured to move in the main combustion cylinder; an upper non-combustion chamber operatively adjacent to the main combustion cylinder; an upper intake valve configured to move in…
A method of controlling inlet valves and exhaust valves of a cylinder of an internal combustion engine to obtain an engine braking effect is disclosed. The method comprises the steps of preventing at least one exhaust valve of the cylinder from closing completely during a plurality of successive…
A control system for an engine including intake and exhaust valve phase variable devices and a control device is provided. At an engine temperature below a first determination temperature, the control is performed so that an exhaust valve close timing is at or retarded from the exhaust top dead…
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 engine 10 includes WTs 42 and 44 and the like…
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 used by the internal combustion engine is…
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 determined on the basis of the exhaust…
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 (2) of the internal combustion engine (1)…
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 intake valve to regulate air charged in a…
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 amount AWTb based on an engine speed NE and…
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 valve opening timing T open . At the same…
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 operation to the stop 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 inlet camshafts it operates in an Atkinson…