Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Patent
1992-05-06
1993-09-21
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
123198D, F02B 7700, F02D 4100
Patent
active
052459675
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for actuating a load adjusting element of a fuel supply device for internal combustion engines. In such a device the position of the transmitter member is transmitted via a transmitter to the electrical control device which transforms this transmitter signal into an adjusting signal while taking into account other possible parameters to be accounted for and passes it on to an adjusting device, e.g. an electric motor. The output of the adjusting device is connected with an adjusting lever of a fuel injection pump via a rod linkage, which adjusting lever varies the fuel injection quantity or the power delivered by the internal combustion engine. This adjusting lever can also be designated as a load adjusting element, its position determining the quantity of fuel injected at the instantaneous speed of the internal combustion engine depending on the construction of the regulating device assigned to the fuel injection pump. A coupling is located inside the rod linkage and can interrupt the connection between the adjusting device and load adjusting element at a signal from the control device. The position of the output of the adjusting device is reported back to the control device and the load adjusting element is thus reset to the reference value predetermined by the control device in normal operation. If a permanent error signal occurs the device is in a defective operating situation. For such cases the known device has a mechanical coupling between the transmitter member and the load adjusting element in the form of a rod linkage and a lever which can be coupled with the load adjusting element via a spring with the intermediary of an idle path in the adjusting range of the rod linkage. In the event of an error in operation the transmitter member adjusts the load adjusting element via the mechanical coupling. In this first operating situation corresponding to a proper functioning, the idle path of the mechanical rod linkage allows the load adjusting element to be adjusted without being influenced by the latter.
However, this device has the disadvantage that a determined idle path must be predetermined, the adjusting effectiveness of the transmitter member being reduced by this idle path during emergency operation in which the connection between the adjusting device and load adjusting element is interrupted as was mentioned above. In this case, in a given position of the transmitter member, the position of the load adjusting element no longer corresponds to the position in the operating situation characterized by proper functioning. Further, a stirrup spring, which in turn works in opposition to another restoring spring, is used for the transmission so that there is no rigid coupling between the transmitter member and the load adjusting element and a deviation of the load adjusting element adjustment during emergency operation relative to normal operation accordingly also occurs in this instance and can also be varied depending on the adjusting resistance.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a device for actuating a load adjusting element of a fuel supply device for internal combustion engines, which avoids the disadvantages of the prior art.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a device of the above mentioned general type in which a wall which is movable relative to the housing is provided as a second coupling between a transmitter member and a load adjusting element and separates two pressure spaces in the housing which are filled with adjusting media and separated from one another via switching valve in the second operating situation and are connected with one another directly or via an adjusting medium supply in the first operating situation; another wall is provided as a first coupling between the adjusting device and the load adjusting element and is movable relative to a hou
REFERENCES:
patent: 4241532 (1981-09-01), Robinson
patent: 4334406 (1982-06-01), Todd
patent: 4373850 (1983-02-01), Durham
patent: 4729357 (1988-03-01), Freudenschuss et al.
patent: 4750463 (1988-06-01), Peter et al.
patent: 4773370 (1988-09-01), Koshizawa et al.
patent: 4893599 (1990-01-01), Melnik et al.
patent: 4911121 (1990-03-01), Barnes
patent: 5052507 (1991-10-01), Luft et al.
WO, 8601256, Feb. 27, 1986.
Patent Abstracts of Japan, vol. 7, No. 244 (M-252) (1389, Aug. 1983.
Moulis Thomas
Robert & Bosch GmbH
Striker Michael J.
Wolfe Willis R.
LandOfFree
Device for actuating a load adjusting element of a fuel supply d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for actuating a load adjusting element of a fuel supply d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for actuating a load adjusting element of a fuel supply d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1043662