摘要:
A control apparatus for limiting the fuel supply quantity of a fuel injection pump for internal combustion engines such as Diesel engines or the like by means of which an automatically controlled additional starting quantity of fuel is variable in accordance with temperature which comprises a limit stop displaceable by the pressure of a control medium and connected with a control piston and including a starting detent which varies its position in accordance with temperature; the limit stop in its first terminal position being arranged to determine the starting setting and in its other terminal position under the control of the pressure of the control medium, being arranged to determine the full-load setting of the fuel supply quantity adjustment member of the injection pump, a starting setting for a warm engine being controlled by the starting detent which limits the starting setting to the full-load setting or below.
摘要:
A pneumatic diaphragm control member is proposed for a fuel injection device for internal combustion engines, especially for a boost-pressure dependent full-load stop, wherein the initial and end positions of a push rod provided with a control diaphragm and movable against a resetting spring can be varied, and wherein the effective pressure range is variable by means of separate adjusting means which do not affect one another. The push rod of the diaphragm control member contacts, in the unpressurized starting position, a stop screw mounted in the lid cover, and, in the pressurized end position, is in contact, by means of a counter stop attached to an extension of the push rod and adjustable in the direction of motion of the push rod, with a second end stop arranged in the pressure chamber. Thus, the bias of the resetting spring can be changed by changing the position of a bearing bushing for the push rod, which bushing serves as an abutment.
摘要:
A regulator apparatus controlled by spring tension, such as a centrifugal governor for internal combustion engines wherein the spring characteristic of the regulator spring remains unchanged during operation and a regulator effectiveness which remains the same over a long period of time is attainable and which includes at least one compression spring acting as the regulator spring and inserted between two supports as well as an actuation member to transfer those regulator motions which tend to cause a change in length of the spring over onto the first spring end, which actuation member can tilt about a transverse shaft disposed perpendicularly to the longitudinal axis of the spring, the compression spring intentionally inserted into an installed position such that a point on the front face of the appropriate spring end, which point transfers the largest spring force component onto the spring support associated with the tiltable actuation member lies in a plane extending parallel to the longitudinal shaft of the spring and penetrating the transverse axis of the actuation member so that undesired tilting movements of the actuation member caused by the spring force exerted eccentrically on the spring supports are eliminated and the installation position of the compression springs which is in accordance with the invention is fixed by fastening means.
摘要:
An rpm governor for fuel injection engines whose function is to raise the idle rpm for a predetermined time period while the engine is cold in order to guarantee a clean idle running cycle of the engine. The rpm governor includes a compensating device having a thermostat which is designed to engage an idling spring and whose duration of engagement is determined by a heating device located on the thermostat. When the engine is cold, the tension in the spring is raised by the compensating device, thus effecting a higher rpm level, which rpm level is later reduced to normal idle when the governor has reached an operational temperature upon the passage of a predetermined period after cold starting.
摘要:
A rotational body supported in a housing of the apparatus carries an angle indication marker, which serves as a signal trigger of a signal transducer secured in a positionally fixed manner relative to the housing of the rotational body. The signal transducer has a transducer body axially displaceably disposed in its transducer housing. This body is displaceable in the direction of its longitudinal axis in order to actuate a first contact switch, and is provided inside its other end face with a switch contact, cooperating with the angle indication marker, of a second contact switch. After the actuation of both contact switches, the angle indication marker is located in a predetermined rotary position, which is indicated in the associated test circuit and serves in particular to ascertain the supply onset position of the drive shaft of a fuel injection pump for internal combustion engines.
摘要:
A method is proposed in which the injection pump, having been adjusted in terms of the supply quantity and of the supply onset, is provided on a test bench, before being mounted on the internal combustion engine, with an electric pulse transducer, whose mounted position is marked on the injection pump. The pump may also be corrected, at a fixed test rpm, to a set-point value fixed relative to the supply onset signal by means of measuring the signal distance between the supply onset signal of a signal transducer measuring the dynamic supply onset and the rotary-position signal of the pulse transducer. The injection pump, with the camshaft rotated into the rotary position associated with the dynamic supply onset, is mounted on the engine which has been brought with its crankshaft into the associated working position. For testing and if needed correcting the mounted position of the injection pump on the engine, only the signal distance between the rotary-position signal and a dead-center signal of a dead-center transducer secured on the engine is tested and corrected if needed to a fixed set-point value. This measurement can be performed with a conventionally available ignition angle testing device.
摘要:
A centrifugal rpm governor for fuel injected motor vehicles, in which the control stroke, which is detected by a lever controlled follower on an adapting surface, is enlarged for a more precise control of the adaptation. A translated shift lever is used as the control lever, which is coupled with the governor adjusting member and the lever carrying the follower. To improve the quality of the governor, the shift lever engages an adapting lever, which carries the follower and which is arranged nearly parallel to the intermediate lever. By means of an adjusting member, which is provided with an adapting control and retraction spring, and which is separated in the governor and adapting sleeve, the use of the governor as an idling as well as a maximum rpm governor is made possible.
摘要:
Each of the pump cylinders disposed in a line, of the fuel injection pump is surrounded in the vicinity of an overflow opening controlled by control edges of the pump piston by a partial suction chamber embodied as a hollow space. Each of these partial suction chambers is supplied with fuel, beginning at an inflow conduit via a throttled inflow opening and the fuel is carried away again via a return-flow opening into a return-flow conduit common to all the pump cylinders. Because of the crosswise flushing of each individual partial suction chamber the fuel temperature in these partial suction chambers is kept at least virtually constant, in order that identical fuel quantities will be supplied to the individual pump cylinders.
摘要:
An apparatus is proposed for positionally fixing a drive shaft disposed in a fuel injection pump for internal combustion engines in a predetermined rotary position, in particular one associated with the onset of fuel supply, and for measuring and testing this rotary position. The apparatus is provided with an apparatus into the reception bore of which either a holder element or an electric pulse transducer can be inserted. An element firmly connected with the drive shaft is provided with an angle-indicator marking, which is equipped both as a coupling element for the position-fixing apparatus and as a pulse trigger for the pulse transducer. The apparatus can thus be used both as a locking apparatus for mounting the injection pump on the engine and, with the pulse transducer inserted, as a measurement and testing apparatus.
摘要:
A centrigural rpm governor for fuel injected internal combustion engines is proposed in which an adaptor assembly located inside the governor can be used over the entire range of practical applications of such a governor. The governor includes parallel coextensive arms, a governor lever and a cooperative governor rod which has a counterstop provided with a sliding block that is movably disposed between the parallel coextensive arms against the initial stressing force of a spring member with the counterstop being arranged to cooperate with a stop means pivotally associated with the housing. The spring member is arranged to load the sliding block and adjustable for the purpose of varying the initial stress and setting the onset of adjustment.