Abstract:
A governor sleeve is axially displaceable on a stationary governor shaft and has an inner space which is defined by one end of the governor shaft and which communicates with the inner chamber of a pump housing charged with fuel. The inner space varies in volume drawing thereinto and discharging therefrom fuel in response to axial displacement of the governor sleeve. There are provided, according to the invention, first channel means for providing restricted communication between the inner chamber and the inner space, second channel means for providing substantially unrestricted communication between the inner chamber and the inner space, and valve means operable to allow only said first channel means to establish the above-mentioned restricted communication upon displacement of the governor sleeve in the direction to produce contraction of the inner space and to allow at least the second channel means to establish the substantially unrestricted communication upon displacement of the governor sleeve in the direction to produce expansion of the inner space in order to prevent an acceleration jerk and smoky exhaust.
Abstract:
Device for regulating the flow of fuel injected into an internal combustion engine. A rolling diaphragm is exposed on one side to the pressure prevailing in the induction pipe of the engine and on the other side to a pressure in the neighbourhood of atmospheric pressure by way of a conduit in which a valve device is inserted for normally closing the conduit. The valve device is shifted to the conduit opening position when a cam regulating the amount of fuel injected reaches the vicinity of an extreme position corresponding to predetermined conditions of engine operation.
Abstract:
THE FUEL RACK OF A FUEL INJECTION PUMP IS REGULATED AS A FUNCTION OF THE ENGINE R.P.M., THE POSITION OF THE ARBITARILY OPERATED BUTTERFLY VALVE AND OTHER OPERATIONAL VARIABLES. FOR THIS PURPOSE AN ELECTRIC SIGNAL REPRESENTING A DESIRED VALUE IS DERIVED FROM THE ANGULAR AND AXIAL POSITIONS OF A THREE-DIMENSIONAL CAM (WHICH ASSUMES ITS POSITION IN RESPONSE TO AN ELECTRIC SIGNAL CHARACTERIZING THE ACTUAL ENGINE R.P.M. AND IN RESPONSE TO A MECHANICAL SIGNAL CHARACTERIZING THE ACTUAL POSITION OF THE BUTTERFLY VALVE) AND IS COMPARED WITH AN ELECTRIC SIGNAL REPRESENTING AN ACTUAL VALUE DERIVED FROM THE ACTUAL POSITION OF THE FUEL RACK. THE ELECTRIC SIGNAL RESULTING FROM SAID COMPARISON IS APPLIED TO A CONTROL MEMBER WHICH IS DISPLACED ACCORDINGLY AND WHICH, BY VIRTUE OF ITS CONNECTION WITH THE FUEL RACK, CAUSES A CORRESPONDING MOVEMENT OF THE LATTER. ELECTRIC CORRECTING SIGNALS REPRESENTING PHYSICAL
MAGNITUDES, SUCH AS ENGINE TEMPERATURE AND ATMOSPHERIC PRESSURE, VARY THE DESIRED AND/OR ACTUAL VALUE SIGNALS PRIOR TO THEIR COMPARISON.
Abstract:
AN R.P.M. REGULATING SYSTEM THAT INCLUDES A HYDRAULIC MOTOR ADAPTED TO DISPLACE THE FUEL QUANTITY CONTROL MEMBER OF A FUEL INJECTION PUMP DELIVERING FUEL TO AN INTERNAL COMBUSTION ENGINE, A SOLENOID VALVE THAT CONTROLS THE ADMISSION OF HYDRAULIC FLUID TO, AND ITS DRAINAGE FROM, SAID MOTOR AND AN ELECTRONIC CONTROL STAGE THE ENERGIZING OUTPUT SIGNAL OF WHICH, APPLIED TO SAID SOLENOID VALVE, IS GENERATED BY THE COMPARISON OF AN R.P.M. DEPENDENT ELECTRIC SIGNAL AND A SIGNAL RESPONSIVE TO THE POSITION OF SAID FUEL QUANTITY CONTROL MEMBER WITH A SIGNAL RESPONSIVE TO THE ARBITRARILY SET VALUE OF A DESIRED ENGINE OUTPUT.