US1464960A - Hydraulic governor for hydrocarbon engines - Google Patents

Description

Aug. M, 1923. HAKMQGQ W. w. WAKELEE ET AL HYDRAULIC GOVERNOR FOR HYDROCARBON ENGINES Filed June 30, 1921 ji ATTORNEYS.

wrnnrnrr w. wan or srnnrronn, nun nnrnnn o. sauna v Application filed June cc, 1921. Serial Ito. 481,892.

To all whom it may concern:

( Be it known that WILLIAM W. Wannnnn and ALFRED C. Gnlsooiu, citizens of the United States, and residents of Stratford and Sandy Hook, respectively, in the county of Fairfield and State of Connecticut, have invented certain new and useful improve ments in Hydraulic Governors for Hydrocarbon Engines, of which the following is a specification. 1

This invention relates to a device for automatically controlling the amount of enplosive mixture supplied to the cylinders of hydrocarbon engines and especially adapted for use in connection with engines of mechanically propelled vehicles such for instance as motor trucks, to govern the speed thereof.

An object of the invention is to provide a simple governor of the present character which can be economically constructed to be eficient and can be positively relied upon to perform its intended function.

A further and more specific object is to provide a governor, the simply constructed casingof which can be a casting capable of receiving the operating parts of the rotary pump and the liquid therefor without necessity for the utilization of any packing ma- 30 terial whatsoever.

With the above and other objects in view the invention resides and consists in the construction and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanylng drawings, and pointed out in the claim hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the claim may be resorted to without departure from the spirit or sacrificing any of the advantages of the inven- 'tion.

Similar characters of reference denote like or corresponding parts throughout the several figures of the accompanyin ings forming a part of this spec' cation, and upon which,

Fig. 1 is a sectional view of the casing of the governor, taken on line 1-1 in Fig. 2 and lookin in the direction of the arrows, showing the interior of the governor and its pipe connection with the intake manifold of a hydrocarbon engine in elevation; and

draw-- Fig. 2 is a sectional view on'line 2-2 in Fig. 1, looking in the direction of the ar= rows.

in the drawing, 10 denotes the casing of the governor which is constructed to provide a bearing 11 for a shaft 12 adapted to be rotated and carrying a gear 13 upon its extremity which is located within the casing and arranged closely adjacent the free end of the bearing similar bearing 14 mounted within the casin and secured upon the base byscrews 15 as indicated supports a shaft 16 which carries upon its upper extremity a gear 17 arranged closely adjacent the free end of said hearing and meshing with the gear 13. The lower end of the hearing it is shaped to provide a houseing 18 defining a pocket 19 between the housing and the base of the casing to receive the pump gears 20 and 21, the former being fixed upon the lower end of the shaft 16 and adapted to be rotated through the instrumentality of the gear 13 and shaft 12. The second pump gear 21 is also contained withinthe pocket 19 and is mounted upon a short shaft 22 secured in the casing.

The casing is adapted to receive oil, denoted by A, which oil may be placed in the casing through the hole shown plugged by the screw 23, the depth of the oil bein preferably about one-half the depth of t e casing as shown. 2% denotes a cover for the casing precluding the possibility of the es ca e of oil.

he oil surrounds the lower portionsof the bearing 11 and 14: as well as the housing 18, said housing being provided with a hole 25 adjacent the gears 20 and 21 allowing entrance of oil to the pocket 19.

The base of the casing is ported adjacent the gears 20 and 21 as denoted at 26 for the connection of one end of a pipe 27 between pocket 19 and the diaphragm chamber 34.

The diaphragm chamber preferably consists of a pair of cylindrical members 29 and 30 screwed to each other as at 31, nu moral 32 denotes a diaphragm of ordinary or preferred construction the circumferential margin of which is secured between the adjacent ends of the screwed together portions 29 and 30 to separate the smaller casing into two distinct and separate chamhers represented by 83 and 34 respectively.

The member 30 of the diaphragm chamber is provided with a reduced extension 35 having a longitudinal opening communicat- Fill lit)

ing with the chamber 33, said opening slidably receiving a rod 36 upon which is an enlargement 37 located within the chamber 33 and held into engagement with the diaphragm 32 by means of a spring 38 within the reduced extension and bearing against the rod 36, and a set screw 39 adjustably situated in the free end of said reduced errtension and against said spring.

Numeral 4E0 denotes a pipe which may communicate with the carburetor of an engine and with the intake manifold thereof, neither said carburetor nor said intake manifold being shown. Transversely arranged in said pipe 4&0 is a short shaft ll upon which is fixed an ordinary throttle valve 452 for opening and closing the passage through the pipe. The ends of the shaft ll extend through the pipe 40 and one end enters a hollow upporting boss 4C3, formed integrally with the pipe 40 and of the tubular guide 35. An arm at fixed to the shaft ll freely engages a recess in the rod 36 providing a connection between said shaft and rod whereby the butterfly valve is oscillated when said rod i reciprocated. A cover plate 46 may be employed upon the boss 43 to enclose the end of the shaft and its connecting parts.

As clearly shown in Fig. 1, the gears 20 and 21 are spaced from the walls of the housing 18, so that a cushion of oil surrounds the gears and is constantly in free communication with the chamber 10 through the hole 25, so that when the force of the spring 38 is greater than the propelling force of the pump, the latter will be ineffective to build up pressure behind the diaphragm 32. lln other words, the oil surrounding the gears is in free communication between the casing 10 and chamber 34, while the oil entrapped between the gear teeth, will either balance, overcome, or be overcome by the force of the spring 38, depending upon the speed of rotation of the gears.

The gears 20 and 21 are constructed and arranged to constitute a rotary pump forcing oil from the pocket '19 through the pipe connection 27 when the driving shaft is in operation as will be understood from Fig. 2 where the throttle valve is shown closed raeaeeo as would be the case from excessive speed of the motor.

When the engine is idle the springB holds the rod 36 against the diaphragm and the diaphragm is free to move to its relaxed position toward the base of the member 29. The arrangement is such that at this time the throttle valve is in wide open position. When then the engine starts operating oil is pumped through the connection 2? to the chamber 3d: to force the diaphragm against the end of the rod 36 and to cause said rod to slide against the action of the spring 88 and rotate the throttle valve a corresponding distance toward its closed position in a manner to cut off the supply of fuel and thus automatically slow down the motor.

Having thus described the invention, what we claim as new and desire to secure by Let-- ters Patent is A. governorcomprising a casing adapted to receive a supply of liquid, a bearing integral with the base of said casing and extending upwardly therefrom beyond the level of said supply of liquid, a rotatable shaft in said bearin a. gear upon said shaft and within said casing, a bearing mounted upon the base of the casing and providing a pocket, a shaft in said last mentioned bearing, a gear upon the upper end of said last mentioned shaft and meshing with said first mentioned gear, a rotary pump within said pocket and actuated from aid shafts and gears, there being communication between said pocket and supply of liquid, a fluid chamber having therein a diaphragm adapted to be actuated from said pump, a pipe connection between said fluid chamber and pump, a valve. and means actuated by said diaphragm'for controlling said valve.

Signed at Bridgeport, in the county of Fail-field and State of Connecticut. this 28th day of June. A. D. 1921 WllLlilAlll W. lVAKEliElC. ALFRED C. GRISCUH. llitnesses: i

C. M. NEWMAN, LILLIAN M. Aniline.

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