US1537945A - Governor for internal-combustion motors - Google Patents

Description

R. Hui-'FORD GOVERNOR FOR INTERNAL CoMBusTIoN MOTORSl Filed April 11 1924 TTORNEY A Patented May 19, 1925.

"PATENT OFFICE.

RAYMOND HUFFORD, or NEW YORK, N. Y., ASSIGNOR. To

K. I. PRODUCTS COMPANY,

INC., F NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

GOVERNOR Fon INTERNAL-COMBUSTION MOTORS.

.Application led April 11, 1924. Serial'NO. 705,732. l

To all whom'z't may concern.'

Be it known that I, RAYMOND HUFFORD, a citizen of the United States, and a resident of New York city, in the county, city, and State of New York, have invented certain new and useful Improvements in Governors for Internal-Combustion Motors, of which the following is a specification.

My invention relates to improvements ingovernors for internal. combustion motors and has for its object to provide a governor for this purpose which will be more efficient, accurate and certain in its action than those heretofore in use.

With this and other objects in view, which will be more particularly set forth in the specification, my invention consists of the novel details of construction and combinations hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanying drawing, Figure 1 is a sectional elevation on the line 1--1 of Figure 2. Figure 2 is a sectional view on the line 2-2 of Figure 1. Figure 3 is a sectional view partly broken away on the line 3 3 of Figure 2. Figure 4 is ya sectional view on the line 4-4 of Figure 1. Figure 5 is an enlarged sectional view `of a modification of the check valve which when in a closed position cuts ofl-` communication with the passage communicating between the interior of the governor shell and the cylinder in which is mounted the piston by which the closing movement of the speed regulating valve is continued'toward or to closed position.y Similar numerals designate similar parts on the several views.

My governor is provided with a shell or body 1, having a cylindrical bore orA passage 2, and is provided with an inwardly p'ojecting flange 3 at the outlet end thereof.

ounted in the upper end of the shell is a spacing sleeve 4 having a vcontracted throat 5. Mounted in the cylindrical bore immediately below the spacing sleeve 4 is a collar 6 having a spider 7. The spider7 is provided with a centrally positioned cylindrical cup 8, a guide 9 and a cylinder 10. A passage 11 communicates between the 'cup 8 andthe cylinder 10. A bushing 12 is mounted as shown in the spider and in the bushing 12 is mounted a needle valve 13 by which the passage 11 may be more or less closed. A passage 14 communicates between the cylinder 10 and the interior of the which a spring 16 serves to normally hold the ball 17 lin closed position on its` seat 18. The tension of this spring may be adjusted by mcansof the screw threaded plug 19. Ports 20 and 21 communicate with the chamber 22 in. which the ball valve is mounted. Also formed in the spider 7 is a passage 23 communicating at its lower end with the cylinder 10 atl the lower end thereof. The upper end of this passage 23 communicates with a passage 24 and with a passage 25 in the threaded plug 26. The outer end ofpassage 25 opens into the chamber 27 which has a cover 28 which is loosely fitted over the chamber so as to permit air to flow into said chamber. Mounted in the cylindrical cup 8 is a Ycylindrical cup shaped valve 29 having ports 30 in the bottom wall thereof i and a cent-ral threaded recess 31 in which is secured the threaded stem 32 on theguide stem 33, and the parts are locked in position by the lock nut 34 and the cotter pin 35. Formed integral with the guide stem/is a piston 36 adapted to reciprocate in the cylinder 10. The lower end of the cylinder 10l and the passage 23 are closed by a plug 3 7 and a washer38. Formed in opposite sides of the cylinder 10 are slots 39, and a hole 40 is tapped through the piston 36. A sleeve 41, carrying an impact head 42 is mounted' concentrically around the cylinder 10 and this sleeve is secured to the lpiston by means of a pin r43 which passes through oppositely opposed holes 44 located nearthe top of. the sleeve 41. Mounted concentrically around the sleeve 41 is a sleeve 45 having an v outwardly extending -iange at 46 atl the lower end thereof. Formed in this sleeve 47 are oppositely opposed'. holes 48 which are holes 48. The spider is threaded at 49 to formed in a plane below the plane of the receive an adjusting nut 50 which may be adjusted by the shaft 51 carrying the spiral thread 52. Mounted concentrically around the cylinder is a spiral spring 53, one end of which bears against the nut-50 and the other end against the flange 46 on the sleeve 45. 54 are perforated ears by which the governor may be secured between a carbureter 57 and the manifoldof an engine by bolts passing through said ears. The 'spider 7 is held in position by a spacing sleeve 55 which has a contracted throat 56. The outletl end of the carbureter 57 is provided with the usual main throttle valve 58.

The operation of my governor is as follows:

Vhen the motor to which the governor is. attached is running slowly, the passage of the mixture from the carbureter through my governor to the motor will be comparatively slow and the impact of the mixtureon the head 42 will not be suicient to lift the head and the parts to which it is secured because of the resistance of gravity and of the spring 53. The weight of the head 42 and the parts to which it is secured,

and the resistance of the spring, as adjusted VY*or* approachin j mallys'ubjecte to a iesser vacuum than theA vacuum between 11e valve 29 and the motor;

by the nut 50, and of gravity are such that when the 4fiow of the mixture and its velocity .is increased by the increase in engine speed to approximately the .speed for which thegovernor has been adjusted the head will be lifted, carrying with it the Ipiston 36 and the cup shaped v alveI 29 and move the valve 29 toward the restricted throat 5 thereby reducing the area of said port. As the valve 29 approaches the closed position it not only reduces the flow of mixture to the motor but causes the pressure above the valve to fall below atmospheric pressure which is communicated to the bottom of the cylinder below the piston by the passages 23, 24 and 25. As the valve 22 is raised this difference in pressure is rapidly increased and as the motor speed is increased the difference in pressure yvill cause the ,piston 36 to rise and lift the valve 29 until the throat 5 is nearly closed and further acceleration of the motor prevented. The air leak past the piston 36 is such, and the capacity of the passage 11 as regula-ted by the needle valve 13 is so limited that the piston 36 will not rise and move the valve 29 toward the closed position until the motor speed approximates the maximum speed for which the governor has been adjusted. The adjusting means are the nut 50, which regulates the resistance of the spring 53 and the needle valve 13 which regulates the capacity of the passage 11.

To prevent stealing. or racin the motor under a partial load when the t rott-le valve of thecarbureter is nearly closed, I have.

provided the passage 14 and the ball valve 15., which is mounted below the restricted throat 5 and. therefore is normally in the closed position, and when the valve 29 is in` the c. sed position, is nor- 2. A governor higher than the vacuum in the upper end' of the cylinder 10 causing the ball 17 to rise and open communication between the body of the governor and the upper part of the cylinder 10 through the passage 14, and the passage 14 being of far greater ca acity than the passage 11 as it is restricted y the needle valve 13, the leak past the piston becomes negligible and the piston is immediately elevated and the valve 29 moved toward or to closed position, restricting further acceleration of the motor speed.` The vacuum or difference in-pressure which will normally cause the piston 36 to be actuated can be readily regulated bymeans of the needle valve 13. Thisl needle valve 13 should be so regulated as against the resistance of the spring 53 that, when the impact ofthe entering mixture on the head 42 has substantially elevated the head and caused the valve 29 to move asubstantial -distance towards the closed position the vacloro Figure 5 is used, the weight of the ball 17 and the resistance of the spring 16 asadj usted should be such that the negative pressure required to lift the ball 17 will be below the maximum negative pressure which can 'be created in the passage 2 when the motor is running free or under a small load at a speed for which the governor is adjusted and the throttle valve of the carbureter is manipulated toward the closed position. It will be noted that the piston 36 is in axial alignmentwith the valve 29'and therefore there will bev little or no tendency to throw the moving parts out of alignment and cause undue friction which would prevent the ac,- curate operation of the governor.-

Claims:

1. A governor for internal combustion motors comprising in combination a body,

a passage in said body through which the combustible mixture may pass to a motor, a valve adapted to reduce the effective area of such passage as it is moved toward its closed position, primary, secondary and tertiary automatic means adapted to cause a movement of such valve toward its closed position.

'for combustion tuated by motors comprising in combination a body, a passage in said body through which combustible mixture may pass to a motor, a reduce the effective area of such passage as it is moved toward the closed position, and primary automatic means adapted tomove said valve toward its closed position, secondary automatic means actuated b'y the negative pressure beyond said valve adapted to move said valve toward its closed position, and means acthe negative pressure in said passage anterior to said valve, adapted to cause a movement of said valve toward its vclosed position.

3. A governor for internal combustion motors comprising in combination a body, a passage in said body through which combustible mixture may discharge outlet, a .valve adapted to reduce the effective area of such outlet, a cylinder in axial alignment with such valve, a passageway leading from such cylinder tothe outside atmosphere and .arestricted passageway leading from such cylinder to said passage in said body beyond said valve, a passageway leading from said cylinder to said passage in said body anterior to said valve, an outwardly opening check valve normally closing such passageway, and a piston mounted in Said cylinder adapted to operate said valve.

4. A governor for internal combustion motors comprising in combination a body, a passage in said body through which combustible mixture may pass toa motor, a valve adapted to lreduce the effective area of said passage when it ismoved toward its closed position, a cylinder, a passageway communicating betweensuch cylinder and the outside atmosphere, a restricted passageway communicating between such cylinder and such -passage in said body beyond such valve, means for regulating the restriction of such passageway,J a second passageway communicatin between such cylinder and suchpassage 1n such body anteriorto'said valve, a checkvalve adapted to normally close said second passageway and a piston mounted in said cylinder adapted to operate said valve.

5. A governor for internal combustion motors comprising in combination a body,

a passage in said body through which combustible mixture ma pass to a motor, a valve adapted to re uce the effective area of said passage when itis moved toward its closed position, primary means actuated b impact of the mixture flowing through suoli passage adapted to initiate the closing movepass to a motor, a

ment of said valve, secondary automatic means actuated by the reduction of pressure beyond said valve adapted to continue and complete the closing movement ofsaidvalve,

and tertiary automatic means actuated by a predetermined reduction of pressure in said passage in said body anterior to said valve adaptedI to supplement the activity of said secondary means. i v

6. A governor for internal combustion motors comprising in combination a body, a passage in said body through which combustible mixture may pass to a motor, a valve adapted to reduce the effective area of said passage when it is moved towards its closed position,.a cylinder, a passageway communicating between such cylinder and the outside atmosphere, a restricted passageway communicating between such cylinder and such passage in said body beyond such valve, means for regulating the restriction of such passageway, a ,second passagewa communicating between such cylinder an `such passage in suchbody anterior to said valve, aV check valve adapted to normally close said second passageway, means for varying the ne ative pressure required to open such chec valve, and a piston mounted in said cylinder adapted to operate said valve.

A governor for internal combustion motors ',comprising in combination a` body, a passage through said body through which combustible mixture may pass to a motor, a valve adapted to'reduce the effective area of such passage as it is moved toward the closed position, automatic means actuated by negative pressure beyond said .valve adapted to move said valve toward its closed position, and secondary automatic means actuated by negative pressure in such passage anterior 4to saidv valve adapted to move said valve toward 'its closed position. l 8. A governor for internal combustion motors comprising in combination a body, a passage through said body through which combustible mixture may pass to ,a motor, aivalve adapted to reduce the eective area 'of such 'passage as it is moved toward the closed position, automatic means actuated by negative pressure beyond. said valve adapted to move said, valve toward its closed position, means for regulating the negative pressure required to actuate such automatic `means, and secondary automatic means actuated by negative pressure in such passage anterior to said va to move said valve-toward its closed position.

I RAYMOND HUFFoRD.

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