摘要:
A valve for the introduction of fuel or a fuel/air mixture in a combustion space of an internal combustion space of an internal combustion engine which works with charge stratification in the combustion space, and with spark ignition of the introduced fuel or fuel/air mixture by a spark plug. To ensure the ignition of the fuel/air mixture contained in the combustion space, there is branched off from an umbrella-like injection jet formed by the fuel or fuel/air mixture an ignition jet which, deviating from the umbrella-like or cone like configuration of the injection jet, comes into the region of the spark plug, in order thus to provide a fuel-rich fuel/air mixture in the region of a flashing over of the ignition spark of the spark plug. This takes place by means of a guide face of the valve, in which the guide face is interrupted by a recess.
摘要:
A magnetic valve for controlling a flow opening of a connection line for guiding fluid, particularly fuel,valve has a valve housing having a guide bore hole, a valve member displaceably supported in the guide bore hole and bringable into contact with a valve seat encircling the flow opening under the action of a closing force and also liftable from the valve seat under the action of an opening force, a coupling member transferring the closing force to the valve member. The coupling member is guided in the guide bore hole and has a damping collar with an end face which faces in direction of the valve seat and is bringable into contact with a contact surface provided in the valve housing and extending substantially parallel to the end face of the damping collar.
摘要:
A fuel-injection pump, especially a direct fuel injection in spark-ignition internal-combustion engines, with at least one pump for generating a fuel flow under pressure and with a rotary slide valve moved synchronously with the drive shaft of the internal-combustion engine and intended for assigning the fuel flow to at least one injection port of the internal-combustion engine and/or for branching off the fuel flow under pump pressure into a return line, the rotary slide valve is mounted so as to be displaceable to a limited extent in the direction of its axis of rotation and/or so as to be rotatable to a limited extent in relation to the rotary drive of the rotary slide valve. Preferably, at the same time, the rotary position or displacement position of the rotary slide valve can be determined in dependence on an operating parameter of the internal-combustion engine, with the result that the axial displacement of the rotary slide valve counteracts a seizure of the rotary slide valve in its guide and determination in dependence on operating parameters affords the possibility of adjusting the injection time over a larger angular sector than would be possible in view of the geometrical limits placed on the design of the rotary slide valve.
摘要:
It is proposed in the case of an electromotive power steering as a steering aid for motor vehicles and similar, particularly for the speed range during parking (parking power steering), having a reduction gear between the servo-motor and the steering column or the drive leading on to the mechanical wheel displacement, that at least one clutch block be so arranged that it creates a drive connection from the servo-motor drive to the steering gear side of the steering column when, upon a moment being exerted manually at the steering wheel, a pawl connected to the steering wheel side of the steering column produces the requisite clutch pressure by mechanical action on the at least one clutch block, while the gear wheels acted upon by the clutch are formed as ring gears fitted to a carrier flange which is joined firmly to the driven section of the steering column so that it cannot rotate.
摘要:
An apparatus for adjusting an angular rotational relationship of a camshaft, serving in particular to actuate gas exchange valves of an internal combustion engine, with respect to its drive element, which apparatus has two control motors acting counter to one another, the mutually corresponding movable walls of which are coupled to one another, wherein to reduce an expense for furnishing control fluid and generating pressure in this control fluid the work chambers of the control motors are on the one hand both connected via a respective check valve, to a control fluid pressure source and on the other hand can be made to communicate selectively with one another directly via a control valve or can be disconnected from one another via this valve, so that torque fluctuations of the camshaft are exploited for generating pressure in one of the work chambers at a time and the resultant pressure is exploited purposefully at certain times for adjustment with subsequent relocking of the work chambers.
摘要:
In a method for controlling the demagnetization phase of electromagnetic devices, particularly electromagnetic valves in combustion engines, the exciting current i=i(t), starting from a high holding current value, is decreased not to zero or even to a negative value, but to a value in the positive range below the holding current. Because of the characteristic current and/or voltage values which accordingly occur in the excitation circuit, the start of the opening and the end of the opening of the valve needle of the electromagnetic valve can be determined in a particularly precise manner and can be taken into account for an optimal influencing of the manner of operation of the combustion engine (FIG. 3).
摘要:
For controlling high-pressure phases during the stroke of a pump piston of a fuel injection pump, magnetic valves are also used, which are built into relief lines of the pump work chamber of such fuel injection pumps and which with the instant of closure of the relief line determine the injection onset and with the instant of reopening of the relief line determine the end of injection and hence the injection quantity. Such valves must be capable of switching rapidly, in view of the high rpm of internal combustion engines, yet must be as small as possible and use the least possible energy. By using a piston slide which in the closing state is balanced in pressure on the high-pressure side, and by relieving the chambers defined on the face end by the piston slide, a fast-switching, recoilless magnetic valve is obtained, which is opened by a restoring spring when the electromagnet is in the currentless state. This makes the use of the magentic valve in combination with electrically controlled injection pumps particularly advantageous.
摘要:
A fuel injection pump, preferably for internal combustion engines operating by the Otto method, having a pump work piston driven to reciprocate and rotate simultaneously and defining two mutually independent pump work chambers, is proposed. The first pump work chamber pumps fuel into the combustion chamber of the engine that is in a state immediately prior to ignition, while the second pump work chamber pumps fuel into the combustion chamber operating offset from the other by 360.degree. of crakshaft angle. To this end, two distributor openings are disposed in the jacket face of the pump work piston, offset by 180.degree. from one another and each communicating with a different one of the pump work chambers.
摘要:
The magnetic valve for fluid control in a fuel injection nozzle includes a valve housing having a magnetic coil mounted on a core of ferromagnetic material and an armature, which is connected to a valve closing element cooperating with a fixed valve seat. After the excitation of the magnetic coil is interrupted, the valve closing element is moved toward a stop tappet by the force of a restoring spring and by the fluid pressure engaging the valve closing element. The stop tappet is supported such that it is displaceable in the opening direction of the valve closing element, counter to the force of a second spring. As a result, a large flow cross section is available for the fluid between the valve seat and a closing body of the valve closing element and a rapid pressure drop is made possible. If the fluid pressure drops below a predetermined level, then the additional spring displaces the stop tappet and hence the armature and the valve closing element into a position in which the flow cross section and the air gaps provided at the armature are decreased, thereby assuring rapid closure of the magnetic valve when the magnetic coil is excited.
摘要:
An apparatus for removing solid particles from internal combustion engine exhaust gases is proposed, in which the flow of exhaust gas travels at a high speed of more than 2.5 m/sec through an elongated tube (4), in which a corona discharge takes place from a coaxial spray disk/electrode arrangement toward the wall of the tube. Inside the tube, the soot particles are agglomerated to form larger particles, which are not deposited on the walls because of the high flow speed, which then carries them to a centrifugal precipitator, leading away from which are a tube carrying scrubbed exhaust gas and an outlet having a small quantity of exhaust gas highly enriched with soot. This soot-enriched flow of exhaust gas can advantageously be recirculated to the intake side of the associated engine for afterburning.