US2381131A

US2381131A - Governor for internal-combustion engines

Info

Publication number: US2381131A
Application number: US557831A
Authority: US
Inventors: Mallory Marion
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-10-09
Filing date: 1944-10-09
Publication date: 1945-08-07
Anticipated expiration: 1962-08-07

Description

Aug., 7, 1945.

M. MALLORY GOVERNOR FOR INTERNAL-OMBUSTION ENGINES Filed 0G13. 9, 1944 Y INVENTOR. BY z u I l l l h #figg/MVS.

Paresd Aug. vi', 1945 UNITED STATES PATENT lori-ICE GOVERNOR FOR INTERNAL-COMBUSTION ENGINES 9 Claims.

vinternal combustion engine, and in particular to a governor for an internal combustion engine which is operated by a suction device connected into the intake manifold and provided with an air bleed which is controlled by a centrfugally unbalanced valve rotated in accordance with the engine speed. Such a governor is shown in my copending application Serial No. 466,961, filed November 25, 1942. In some instances, instead of air bleeding the suction device directly to atmosphere, it has been considered desirable to air bleed into the intake passageway under the air cleaner and on the atmosphere side of the governor valve to prevent dirt and dust from going into the engine. Since al1 air cleaners offer some restriction to the air flow into the intake passageway, a vacuum or suction is present in the intake passageway and therefore the suction device cannot be bled down to atmospheric pressure or bled down to as low pressure as is possible when the air bleed is directly to atmosphere. If the vacuum or suction in the suction device cannot be eliminated, the governor valve will not completely open.

It is the object of this invention to produce an engine governor of the above described type wherein the suction device can be air bled into the intake passageway beneath the air cleaner and which will function satisfactorily to control the speed of the engine at the desired governed speed.

Fig. 1 is a View partly in section showing my engine governor with the air bleed connected into the intake passageway beneath the air cleaner.

The parts of my governor are referenced as follows: engine intake manifold I., intake passageway 2, air cleaner 3, governor valve 4 of the butterfly type. crank arm 5 xed on valve shaft 6, tension spring 1 connected to crank arm 5 and tending to open valve 4, a suction actuated device comprising a housing 8 divided by flexible diaphragm 9 into chambers I0 and II, rod I2 connecting diaphragm 9 to crank arm 5, conduit I3 connecting suction chamber III into the intake passageway 2 on the engine or outlet side of valve 4. conduit I4 connecting conduit I3 into the venturi AI5 in intake passageway 2, conduit I6 connecting suction chamber II! at all times with passageway I1 in the engine distributor shaft I8, centrifugal valve housing I9 which rotates with shaft I8, valve cylinder 20 communieating at all times with passageway I1, centrifugally unbalanced piston valve 2| reciprocably mounted in cylinder 20, air bleed orifice 22 controlled by centrifugally unbalanced valve 2|, tension spring 23 tending to oppose closing of'valve 2|, passageway 24 in valve 2| permitting restricted air flow between orice 22 when open and passageway I1, conduit 25 connecting the sealed distributor housing 26 with intake passageway 2. The inlet end 21 of conduit 25 is preferably turned upwardly directly into the air ow. Conduit 28 connects conduit 25 with chamber '|I.a Chamber I| is a sealed chamber and communicates with atmosphere only through

conduits

28, 25, intake passageway 2 and air cleaner 3. Manually operated throttle valve 3U which may be omitted if desired.'

The operation of my device is as follows: As shown in the drawing, the engine has attained its governed speed, centrifugal valve 2|' has I closed or throttled air bleed orifice 22 so that the intake passageway suction on the engine side of valve 4 has drawn flexible diaphragm 9 to the right and closed governor throttle valve 4. If the load on the engine is increased, the engine speed will slow down slightly causing spring 23 to open centrifugal valve 2| thereby permitting air to flow from intake passageway 2 through conduit 25, orifice 22, passageway I1 and conduit I6 into chamber I0, thereby increasing the pressure in chamber I0 which permits spring 1 to move Valve 4 toward open position. As valve 4 moves toward open position a greater charge is admitted through air cleaner 3 and through intake passageway 1. The farther that governor valve 4 is opened, the greater the charge admitted through intake passageway 2, and since air cleaner 3 will offer some restriction to air ow there will be an appreciable vacuum or suction created at orice 21 which will prevent the vacuum in chamber I0 from being absolutely eliminated. However, since this suction or vacuum obtaining on the atmosphere side of valve 4 and also created by air ow past inlet 21 is imposed through

conduits

25 and 28 upon chamber this vacuum will compensate or counterbalance the inability of the centrifugally controlled air bleed 25, 2|, I1 and 26 to bleed down suction chamber I0 to atmospheric pressure. In other vwords, this vacuum or suction imposed upon chamber assists the leftward movement ofv diaphragm 9 and assists spring 1 to completely open governor valve 4 if load conditions call for a complete opening of the throttle governor valve. Thus, by sealing oif chamber II and imposingthe same vacuum on chamber II as air bleed inlet 21 acting through conduits 25,

orifice 22 and conduits I1, I6 imposes upon suction chamber i0, I have completely negatlved the otherwise harmful eilect oi' air bleeding suction chamber l into the intake passageway beneath the air cleaner rather than directly to atmosphere. It is obvious that if conduit 28 were eliminated and chamber Il was open to atmosphere that the valve 4 would never completely open because of the inability of air bleed inlet 21 to completely eliminate the vacuum or suction in chamber I0.

I claim:

1, In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive lluid through said passageway, fluid pressure actuated means connected to said governor valve for imparting movement to the same, a conduit connecting one side of said pressure actuated means into the intake passageway on the engine side of said governor valve, an air bleed for the same side of said pressure actuated means into the intake passageway on the atmosphere side of said governor valve, means for controlling said air bleed in accordance with engine speed and tending to close said air bleed whenever the engine attains a predetermined desired governed speed, and a conduit connecting the other side of the pressure actuated means into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is imposed upon both sides of said pressure actuated means and cancels itself out and the pressure actuated means can move the governor valve to wide open position whenever the speed controlled means opens said air bleed.

2. In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive fluid through said passageway, uid pressure actuated means connected to said governor valve for imparting movement to the same, a conduit connecting one side of said pressure actuated means into the intake passageway on the engine side of said governor valve, an air bleed for the same side of said pressure actuated means into the intake passageway on the atmosphere side of said governor valve, centrifugally controlled valve means for controlling said air bleed in accordance with engine speed and-tending to close said air bleed whenever the engine attains a predetermined desired governed speed, and a conduit connecting the other side of the pressure actuated means into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is imposed upon both sides of said pressure actuated means and cancels itself out and the pressure actuated means can move the governor valve to wide open position whenever the speed controlled means opens said air bleed.

3. In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive fluid through said passageway, two substantially air-tight chambers, a movable wall separating said chambers and responsive to fluid pressure differences in the said chambers, a connection between said pressure actuated wall and the governor valve for imparting movement thereto, a conduit connecting one of said chambers into the intake passageway on the engine side of said governor valve, an air bleed for said last mentioned chamberinto the intake passageway on the atmosphere side of said governor valve, means for controlling said air bleed in accordance with engine speed and tending to close said air bleed whenever the engine attains a predetermined desired governed speed, and a conduit connecting the other of said chambers into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is established in both chambers when the speed control means opens the air bleed and the pressure actuated wall can move the governor valve to open position.

4. In an internal combustion engine having an' intake passageway, a governor valve for controlling the flow of motive fluid through said passageway, uid pressure actuated means connected to said governor valve for imparting movement to the same, a conduit connecting one side of said pressure actuated means into the intake passageway on the engine side of said governor valve, an air bleed for the same side of said pressure actuated means into the intake passageway on the atmosphere side of said governor valve, a centrifugally unbalanced valve for controlling said air bleed in accordance with engine speed and tending to close said air bleed whenever the engine attains a predetermined desired governed speed, said centrifugal valve constituting its own centrifugal weight for unbalancing the same, and a conduit connecting the other side of the pressure actuated means into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is imposed upon both sides of said pressure actuated means and cancels itself out and the pressure actuated means can move the governor valve to wide open position whenever the speed controlled means opens said air bleed.

5. In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive iluid through said passageway, fluid pressure actuated means comprising a substantially air-tight housing and a flexible diaphragm dividing said housing into two chambers, a connection between said flexible diaphragm and the governor valve for imparting movementto the governor Valve, a conduit connecting one of said chambers into the intake passageway on the engine side of said governor valve whereby the suction obtaining in the intake passageway on the engine side of said governor valve is imposed on the ilexible diaphragm for closingr said governor valve, an air bleed for said last mentioned chamber into the intake passageway on the atmosphere side of said governor valve, means for controlling said air bleed in accordance with engine speed and tending to close saidair bleed whenever the engine attains a predetermined desired governed speed whereby the intake passageway'suction is established in said chamber and causes said diaphragm to move said governor valve toward closed position, and a conduit connecting the other of said chambers into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is established in both of said chambers when the speed controlled means opens said air bleed and the pressure actuated means can open the governor valve.

6. In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive fluid through said passageway, iluid pressure actuated means comprising a substantially air-tight housing and a flexible diaphragm dividing said housing into two 2,381,131 chambers, a connection between said flexible diacommunication whenever the engine attains a predetermined desired governed speed, and a conduit connecting the other side of the pressure actuated means into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway on the atmosphere side of the governor valve will be established in both sides of said pressure acl tuated means and cancel itself out and `the preson the atmosphere side of said governor valve,

means for controlling said air bleed in accordance with engine speed and tending to close said air bleed whenever the engine attains a predetermined desired governed speed whereby the intake passageway suction is established in said chamber and causes said diaphragm to move said governor valve toward closed position, and a conduit connecting the other of said chambers into the intake passageway on the atmosphere side of said governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is established in both of said chambers when the speed controlled means opens said air bleed and said resilient means can open the governor valve. l

7. In an internal combustion engine having an intake passageway, a governor valve for controlling the flow of motive fluid through said passageway, fluid pressure actuated means connected to said governor valve for imparting movement to the same, a conduit connecting one side of said pressure actuated means into the intake passageway on the engine side of said governor valve, a rotary valve housing rotated in accordance with the engine speed, a conduit connecting said rotary housing with the last mentioned side of said pressure actuated means, a conduit connecting said housing with the intake passageway on the atmosphere side of said governor valve, a centrifugally unbalanced valve reciprocably mounted in said valve housing for controlling communication between said last two mentioned conduits and tending to close said sure actuated means can move the governor valve to open position whenever the speed controlled centrifugal valve is open.

8. In an internal combustion engine having an intake passageway, a governor valve for controlling the ow of motive fluid through said passageway, an air cleaner connected to said intake passageway on the atmosphere side of said governor valve, fluid pressure actuated means connected to said governor valve for imparting movement to the same, a conduit connecting. one side of said pressure actuated means into the intake passageway between the governor valve and said engine, an air bleed for the same side of said pressure actuated means into the intake passageway between said air cleaner and the said governor valve, means for controlling said air bleed in accordance with enginespeed and tending to close said air bleed whenever the engine attains a predetermined desired governed speed wherebythe pressure actuated means responds to move said governor valve toward closed position, and a conduit connecting the other side of the pressure actuated means into the intake passageway between the air cleaner and .the governor valve whereby any vacuum obtaining in the intake passageway in the vicinity of the air bleed is imposed upon both sides of said pressure actuated means and cancels itself out and the pressure actuated means can move the governor valve to wide open position whenever the speed controlled means opens said air bleed.

9. The combination as set forth in claim 1 including a restriction to fluid ow located adjacent the inlet end of said intake passageway.

MARION MALLORY.