MAN Diesel SE Patent applications |
Patent application number | Title | Published |
20090301417 | Valve Control For A Gas Exchange Valve In An Internal Combustion Engine - A valve control for a gas exchange valve of an internal combustion engine includes at least one spring element for preloading the valve in an end position and a fixing device for the releasable fixing of the valve. The spring element in a moveable insert, which by means of an actuation device is adjustable in actuation direction of the valve between an end position close to the valve disc and an end position far from the valve disc for adjusting a preload applied on the valve by the spring element. | 12-10-2009 |
20090076712 | Device for the control of an internal combustion engine operable with liquid and/or gaseous fuel - Presented is a device for controlling an internal combustion engine operable with at least on of liquid and gaseous fuel. The device includes a rotational speed controller that outputs a control signal, which is dependent on the actual rotational speed of the engine and which influences the power output of the engine. The control signal includes a dimension for the total power to be output by the engine. The device further includes a dividing device configured for receiving the dimension, dividing the dimension for the total power according to a predetermined ratio into a contribution of the liquid fuel and a contribution of the gaseous fuel, and generating and outputting a second and a third control signal. The second control signal influences the liquid fuel quantity injected into the engine per unit time and the third control signal influences the gas fuel quantity injected into the engine per unit time. | 03-19-2009 |
20090071913 | Device and method for the cleaning of lubricant and a lubricant circuit - A cleaning device for cleaning lubricating oil which circulates in a lubricating oil circuit has an intake to be connected with the lubricating oil circuit, through which a part quantity of the lubricating oil circulating in the lubricating oil circuit is to be fed to the cleaning and a return to be connected with the lubricating oil circuit for the returning of the cleaned lubricating oil into the lubricating oil circuit. The device includes a closed cleaning circuit in which the intake terminates, a feed device for the circulating a mixture of a circulating oil contained in the cleaning circuit and the lubricating oil to be cleaned fed to the cleaning circuit through the intake, and at least one cross-flow filter arranged downstream of the feed device seen in the feed direction, which is provided with at least one filter membrane past which flows the mixture of circulating oil and lubricating oil to be cleaned, wherein a part of the mixture flows through the filter membrane into a filtrate chamber connected with the return. | 03-19-2009 |
20090013865 | Piston for a Reciprocating-Piston Internal Combustion Engine Provided with Hardened Piston Ring Grooves - A piston made of a nitride-forming base alloy for a reciprocating internal combustion engine is disclosed. The piston includes a piston upper part having a plurality of peripheral piston ring grooves, each piston ring groove having two groove flanks, one of the piston ring grooves being closest to a combustion chamber of the internal combustion engine than the remaining piston ring grooves, the groove flanks of at least the one of the piston ring grooves being hardened using a boundary layer, the piston upper part including an external surface which includes the hardened groove flanks, and a wear and correction protection layer coating at least the external surface, the wear and correction protection layer includes a nitration layer. The nitration layer is generated by converting the nitride-forming base alloy by one of plasma nitration and plasma nitro-carburization in at least one of a nitrogen atmosphere and a nitrogen-carbon atmosphere. | 01-15-2009 |