An engine control system controls an internal combustion engine so that some of a plurality of cylinders in a multi-cylinder internal combustion engine are made to rest and reduced-cylinder operation takes place. Each cylinder comprises a piston, an intake...

A control apparatus for an internal combustion engine is provided, which is capable of suppressing deterioration of exhaust emission due to an unburned fuel contained in oil which enters a combustion chamber during valve stop control while preventing inflo...

The present invention has its object to provide a control apparatus for an internal combustion engine including a variable valve operating mechanism which is capable of accurately and effectively identifying an abnormality-occurring cylinder during operati...

A method is provided for controlling a four-stroke multi-cylinder spark ignition combustion engine using cylinder deactivation of a subgroup of cylinders while another subgroup is working, during operation with an engine torque below a predetermined level....

A control device for an engine (1), which includes a plurality of cylinders, an electronically controlled unit injector (14) for injecting fuel into each cylinder, and an electronically controlled valve train (10a, 10b, 11a, 11b, 12) for opening and closin...

The method of maintenance of optimum conditions in a motor vehicle internal combustion engine catalyst (KAT) during an unfired operating phase such as during cleaning involves controlling an oxygen inlet valve for the intake so that the oxygen feed to the ...

The method provides switching between full-load and partial-load operation of the multi-cylinder IC engine (1) by activation of the inlet or outlet valves for an individual engine cylinder, or a cylinder group, in full-load operation and de-activation of t...

An automotive internal engine 8 is provided which includes an engine controller 70 cognisant of a desired deceleration condition for a vehicle and a combustion chamber 12 with a reciprocating piston 15 mounted therein. The piston has a top dead centre and ...