About 36 results
https://drivepatents.com/patents/1104732 · 2 May 2002
Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9, 11) and with means for supplying a homogeneous fuel/air mixture to the engine cylinders. The engine has an ignition system (14) with a sparkplug (2) for each cyl...
https://drivepatents.com/patents/1106762 · 6 Feb 2002
A system and method for the control and preparation of the combined fuel and air mixture in a camless internal combustion engine. The system and method provide increased engine operating efficiency and lower exhaust emissions during low speed and cold engi...
https://drivepatents.com/patents/1106893 · 30 Jan 2002
Valve actuator system includes computer. Circuit for stabilizing supply current provided by battery is placed between 12 volt vehicle battery (4) and computer. Circuit has boost type power chain (2) with inductance (10), diode (11), static interrupter (13)...
https://drivepatents.com/patents/1109159 · 17 Oct 2001
The circuit has at least one coil (W) that attracts an armature of the electromagnetic actuator when carrying current. The coil is connected via at least two switching elements (T3-T6) to at least one supply voltage source (U) so that current can flow thro...
https://drivepatents.com/patents/1109959 · 26 Sep 2001
In electromagnetically operated engine valve position controlling apparatus and method, after such an initialization before an engine start as to hold the engine valve (for example, an intake valve) at a closure position (or at a full open position) and ho...
https://drivepatents.com/patents/1109937 · 26 Sep 2001
Method for regulation of currents during phases of stoppage in electromagnetic actuators, in which an actuator (1) is connected to a valve (2) and includes a mobile unit (3), a sensor (12) and a first and a second electromagnet (6a,6b), which receive respe...
https://drivepatents.com/patents/1109851 · 26 Sep 2001
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/1110061 · 19 Sep 2001
To operate the electromagnetic actuator (4), for the valve (1) of an internal combustion (IC) motor, the voltage is controlled to give a voltage curve where the eddy current at the armature (4d) is kept as low as possible from the computation of a mathemat...
https://drivepatents.com/patents/1111946 · 27 Jun 2001
An internal combustion engine is provided with a variable valve mechanism (30, 31) capable of altering opening and closing timings and / or opening amounts of at least one of an intake valve (28) and an exhaust valve (29) of an internal combustion engine. ...
https://drivepatents.com/patents/1112355 · 13 Jun 2001
A system and method control intake air of an internal combustion engine. The engine has at least one combustion chamber provided with intake valves together with an intake manifold provided with a throttle valve. The opening and closure timings of the inta...