Abstract:
An internal-combustion engine includes an engine cylinder having an axis, a cylinder top and a cylinder chamber; a piston slidably received in the cylinder and bordering the cylinder chamber; an intake valve, an exhaust valve and an ignition device arranged at the cylinder top; and a fuel injection nozzle arranged at the cylinder top and opening into the cylinder chamber at a location adjoining the exhaust valve.
Abstract:
For a combustion procedure for internal combustion engines, in which a fuair mixture with back-fed exhaust gas is introduced into a combustion chamber, a highly-combustible fuel-air mixture without back-fed exhaust gas in introduced into at least one precombustion chamber, which is connected by means of at least one opening with the combustion chamber.
Abstract:
A process for the regeneration of engine emission particulates collected in particulate filter traps associated with each of the engine cylinders, or with groups of such cylinders, includes the selective elevation of the emission temperature of at least one of the cylinders or groups to the extent required for regeneration, by oxidation, of the filter trap or traps associated therewith, by supplying engine fuel to such cylinder or cylinders in a predtermined amount to produce the elevated emission temperature, and supplying the remaining of the cylinders with amounts of engine fuel less than such predetermined amount as required to sustain the given engine power output.
Abstract:
An arrangement for an electromagnetically operated actuator for a displacement-type engine having a spring-mass valve actuating oscillatory system which includes a valve having an armature thereon and a pair of electromagnets for maintaining the valve in at least first and second final operational positions of the maximum amplitude of vibration, the armature and at least one of the electromagnets comprising a contact dampener for the armature, at least one of the electromagnets being mounted in the housing by a hydraulic length-compensating element such that the distance between the valve seat and the pole area of the electromagnet is adjusted to correspond to the distance between the valve head and the pole area of the armature, so that the desired amount of dampening is consistently effected as the armature approaches the electromagnet and the valve approaches its seat.
Abstract:
An air-compressing, self-igniting combustion engine for liquid fuels, in an arrangement that includes a combustion chamber depression in a piston for receiving injected fuel predominantly in the vicinity of the wall thereof and for receiving rotating combustion air at the time of fuel injection. Oxygen-containing fuel that is reluctant to ignite is injected through a first injection device into the combustion chamber depression; through a second injection device there is injected fuel that is willing to ignite, for instance oil fuel, gas oil or Diesel fuel, for initiating and/or maintaining the fuel combustion in the combustion chamber depression. Furthermore, the injection times of the fuel that is willing to ignite and the oxygen-containing fuel that is reluctant to ignite overlap each other. The first and second injection nozzles each are arranged with an injection pump and are rigidly coupled and have a common injection adjuster. Both injection nozzles are combined in a single-nozzle body. One injection nozzle is embodied as a two-hole nozzle which is inclined at an acute angle in the twist direction, the fuel streams of which however form such a small differential angle with respect to each other that the droplets of the oxygen-containing fuel that is unwilling to ignite in essence form a common droplet veil or mist. The injection nozzles are so directed that a separate droplet veil or mist results for both fuels.
Abstract:
A two-stroke internal combustion engine comprises a first cylinder and a second cylinder arranged on a common axis. A first piston pair comprises a first piston and a second piston located in the first cylinder and defining a first combustion chamber. The first piston and the second piston of the first piston pair move in opposite directions within the first cylinder. A second piston pair comprises a first piston and a second piston located in the second cylinder and defining a second combustion chamber. The first piston and the second piston of the second piston pair move in opposite directions within the second cylinder. The first piston of the first piston pair is connected to the second piston of the second piston pair by a first connecting rod. The second piston of the first piston pair is connected to the first piston of the second piston pair by a second connecting rod. A fuel supply is connected to at least one of the first cylinder or the second cylinder. At least one of the first cylinder or the second cylinder includes a first end and a second end. A plurality of inlet openings define an inlet plane proximate the first end. A plurality of exhaust openings are located proximate the second end. The fuel supply injects fuel proximate to the first end.
Abstract:
An electromagnetic actuator, particularly for operating a cylinder valve of an internal-combustion engine, includes an electromagnet for generating an attracting electromagnetic force; an armature movable into contact with and away from the electromagnet; a spring arrangement connected to the armature and opposing the electromagnetic force; and a sound muffling device attached to the electromagnet for reducing sound transmission by body vibration from the electromagnet.
Abstract:
A method of measuring a valve play in a reciprocating valve. The valve has open and closed positions and is operated by an electromagnetic actuator which includes an opening electromagnet, a closing electromagnet, an armature movable between pole faces by electromagnetic forces against a spring force of a return spring arrangement for moving the valve into an open position. The valve play is defined by a clearance between the armature and the valve when the armature is in contact with the pole face of the closing magnet and the valve is in the closed position. The method includes the steps of detecting a motion of the armature within the clearance as a function of the course of voltage and/or current in the closing electromagnet; and deriving the size of the valve play from an irregularity (spike) in the course of voltage and/or current. The irregularity is caused by an impacting of the armature on the valve and/or the pole face of the closing electromagnet.
Abstract:
In a process and device for sensing and evaluating knocking combustion during operation of an internal combustion engine the electromagnetic radiation in a combustion chamber thereof, which changes upon knocking combustion, is detected and transmitted to a measuring and/or processing device. The occurrence of knocking combustion can be precisely determined by measuring the rate of increase in the intensity of the electromagnetic radiation in a volume of the open combustion chamber which is displaced from the spark plug and which is less than 0.04%, preferably 0.004%, of the displacement volume in the top piston dead center.
Abstract:
For 4 cycle internal combustion engines with adjustable inlet control periods and individual suction pipe segments per cylinder or per inlet, at low speeds and high torque (high load up to full load) the combustion sequence is improved in that the opening start of the inlet valve is shifted in such a manner to a later instant following the top dead center of the piston that for a suitable suction pipe length the pressure wave generated while opening the inlet causes a recharging of the cylinder prior to closing the inlet.