About 36 results
https://drivepatents.com/patents/992841 · 13 Feb 2013
An intake/exhaust valve control device 1 for an internal combustion engine including a cylinder having an intake valve and an exhaust valve includes: solenoids 9 to 16 for driving at least one of the intake valve and the exhaust valve; a battery 6 for supp...
https://drivepatents.com/patents/1073867 · 21 Sep 2005
A system and method to control engine valve operation during periods of cylinder deactivation of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce fuel consumption and emissions during cylinder deactivation period...
https://drivepatents.com/patents/1080822 · 12 Jan 2005
The method involves using an electrical machine (11a) connected to a rotating shaft of the turbocharger to produce electrical energy as a motor to drive the shaft depending on defined first operating parameters of the engine (1) and to convert mechanical e...
https://drivepatents.com/patents/1081352 · 22 Dec 2004
A control apparatus (10) controls an electromagnetically driven valve, which includes at least one of an electromagnetically driven exhaust valve (210) for opening or closing an exhaust valve and an electromagnetically driven intake valve (200) for opening...
https://drivepatents.com/patents/1082888 · 27 Oct 2004
The method involves closing two valves (S1, S2) of an internal combustion engine, when admission valves of one cylinder are closed. The time between the closing of the two valves (S1, S2) enables the propagation of overpressure created in an admission pipe...
https://drivepatents.com/patents/1084299 · 8 Sep 2004
An apparatus is provided which includes an internal combustion engine (1) of a lean-burn type, an NOx catalyst (46) disposed in an exhaust passage of the engine so as to remove nitrogen oxides contained in exhaust gas emitted from the engine, and a variabl...
https://drivepatents.com/patents/1085557 · 21 Jul 2004
A control method with variable feedback gain for energization of an electro-magnetically driven intake/exhaust valve of an internal combustion engine increases opening and closing speeds of the intake/exhaust valve driven with electromagnets having small c...
https://drivepatents.com/patents/1091971 · 12 Nov 2003
It is an object of the present invention to provide a drive unit for a direct-acting valve for internal combustion engines, by which quiet internal combustion engine can be obtained, with the noise suppressed. This system comprises an inlet valve 8 arrange...
https://drivepatents.com/patents/1092544 · 15 Oct 2003
The method involves feeding air to a combustion chamber via a choke flap associated with an induction pipe and via at least one inlet valve with a variable valve lift controler for influencing the valve lift. The cylinder air filling is determined from the...
https://drivepatents.com/patents/1093208 · 17 Sep 2003
A system 12 and method for controlling an armature 20 of an electromagnetic actuator 10 are provided. The system 12 includes a circuit 46 for providing current to the coils 32, 34 of electromagnets 16, 18 disposed on either side of the armature 20. The sys...