US2155377A

US2155377A - Engine mounting

Info

Publication number: US2155377A
Application number: US744078A
Authority: US
Inventors: Rolland S Trott
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-09-14
Filing date: 1934-09-14
Publication date: 1939-04-18
Anticipated expiration: 1956-04-18

Description

April 18, 1939. R. s. TRofr ENGINE moum'me Filed Sep}. 14, 1954 3 Sheets-Sheet 1 R. s. TROTT ENGINE MOUNTING April 18, 1939.

3 Sheets-Sheet 2 Filed Sept. 14, 1934 P 1939. R. s. TROTT ENGINE MOUNTING Filed Sept. 14, 1934 3' Sheets-Sheet s In VQFHEP/ W4. \ZUZZ Patented Apr. 18, 1939 UNITED STATES PATENT OFFICE ENGINE MOUNTING Rolland s. m, Denver, Colo. Application September 14, 1934, Serial No. 744,078

Claims.

My invention relates to engine mountings for mounting engines upon frames or supports and providing pivotal and orbital vibration cushion: ing movements therefor, and is a continuation in part of my application Serial No. 578,108, filed November 30, 1931, and of my prior application Serial No. 578,110, filed November 30, 1931, now Patent No. 1,975,910 of October 9,1934, and is an improvement over my patent on Engine mountings, No. 1,834,907, dated December 21, 1931.

In my former invention as set forth in patent No. 1,834,907, the two mountings of the engine unit upon its support provided for an axis of oscillation substantially concentric with the engine crankshaft if balance could thus be obtained, or oflfset laterally or vertically therefrom if required for proper balance.

This construction as thus set forth in my abovementioned patent, providing as it does one axis of oscillation only, may locate such axis concentrio with the crankshaft of the engine or passing through the center of gravity of the engine, or may provide a compromise position for the axes of oscillation between the two extremes.

It is one object of my present invention to provide a construction in which both the center of gravity axis and the torque axis are provided so as to take care of both the forces due to torque and those due to gravity, weight, or mass.

Another object of my present invention is to provide sufilcient resiliency in the mounting means as to permit oscillation of the engine unit about a transversely extending axis adjacent the rear mounting due to secondary force impulses in the engine exerted in a vertical direction.

A further object of this invention is to provide a construction to take care of special installations, and thereby overcome excessive vibration in any particular direction, due to any special case.

I accomplish these objects by providing a construction as illustrative of the invention in which the rear of the power plant is pivotally mounted upon its support or frame by a mounting which will accommodate itself to any position or movement of the front of the power plant and in which the front of the power plant is provided with a mounting having two spaced points of oscillation, and by-providing suitable stabilizing means for the construction with regard to both points of oscillation.

All of this will be fully described below and is illustrated in the drawings, in which;

Figure 1 is a side view of a power plant provided with my combined center of gravity axis and concentric axis of oscillation mounting;

Fig. 2 is a section on the line 22 of Fig. 1;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2;

Fig. 4 is a sectional view similar to Fig. 3 but showing a modified form thereof;

Fig. 5 is a sectional view similar to Fig. 3 but. showing another modified form thereof;

Fig. 6 is a plan view of Fig. 1, showing stabilizer 1o means between the engine unit and the frame;

Fig. 7 is a plan view similar to Fig. 6, but showing stabilizer means between the engine unit and the third member to the rear axle of the vehicle;

Fig. 8 is a plan view similar to Fig. 6, but showll ing a stabilizer connection between the engine unit and the front axle of the vehicle;

, Fig. 9 is a detail cross-section partly in elevation showing a modified form of stabilizer between the floating member and the front axle spring;

Fig. 10 is a detail, similar to Fig. 9, showing a modified form of stabilizer between the floating member and the front axle of the vehicle;

Fig. 11 is a detail, similar to Fig. 9, showing a modified form of stabilizer between the floating 26 member and the front axle-spring of the vehicle;

Fig. 12 is a detail, similar to Fig. 9, showing a modified form of stabilizer between the floating member and a reach to the front axle;

Fig. 13 is a vertical sectional view showing a. modified form of stabilizer between the floating member and the engine unit;

Fig. 14 is a vertical sectional view showing a modified form of stabilizer between the floating member and the frame;

Fig. 15 is a vertical sectional view showing a modified form of stabilizer between the floating member and the frame;

Fig. 16 is a diagram illustrating some of the various possible positions of the floating member;

Fig. 17 is a detail of one form of the rear mounting; and

Fig. 18 is a detail front elevation of another form of front mounting embodying this invention.

In Fig 1, a rear mounting l of non-metallic resilient material, such as rubber, supports the rear of the power plant or engine unit 2'upon a crossmember 3, of the frame of the vehicle. I

A floating member 4 at the front of the engine unit is supported by a mounting 5, upon a crossmember 8 of the frame of the vehicle. The power plant 2 at its front end is supported by a mounting 1 upon the floating member 4. The rubber mountings 5 and l, are secured by clamps therearoundrespectively to the frame and to the engine unit.

The mountings 5 and I may be both of nonmetallic and yieldable material, such as rubber, as illustrated in Figures 2 and 3, or the upper mounting may be of metallic material I while the lower mounting 5 is of yieldable material'as shown in Figure 4; or the upper mounting I may be of yieldable material and the lower mounting may be of metallic material 5' as shown in Figure 5, depending upon conditions to be met-and results required. In' any case, the tendency of the power plant to oscillate about its center of gravity (roughly indicated at C in Figure 1) may result in oscillation about an axis of oscillation GG provided by the rear mounting I and the front mounting I.

Also the tendency of the power plant to oscillate about the axis of its crankshaft 48 is permitted by the mounting l and the mounting 5, which combine to provide an axis of oscillation TT. Oscillation of the power-plant 2 about either one or both of these axes of oscillation may take place at anw time in proportion to the forces which tend to produce such oscillations, such oscillations, however, being resiliently opposed as will appear below.

The power plant or engine unit designated 2, is of conventional type comprising an internal combustion engine, a combined flywheel and clutch housing,'and transmission housing rigid] secured together as a unit.

The internal combustion engine is of the reciprocating piston type, being shown as four-cyl inders in line, within each of which cylinders is a reciprocating piston having a connecting rod joining it to crankshaft 48 in the usual manner. The transmission drives the usual propeller shaft 40'.

The rubber mounting designated generally I, at the rear, permits oscillation of the engine about the axes G-G, and T--T, extending generally in the direction of the length of the engine, and it also permits oscillation of the engine about a transverse or crosswise axis W, diagrammatically illustrated in Figure 1 as a point.

During operation of substantially all engines there are numerous parts which move relative to the engine casing, many of which travel in diiferent directions. The reactions upon the engine casing from the simultaneous movements of such parts in diverse directions create resultant forces which tend to cause the engine to move through a maximum amplitude in a somewhat regular path. In the case of a four-cyllnder-inline engine as illustrated, the secondary force impulses constitute important unbalanced internal forces and they are applied in the direction of reciprocation of the pistons and their frequency varies in accordance with the speed of operation of the engine.

In the engine illustrated, these secondary force impulses are exerted in vertical directions and they tend to oscillate the engine about the transverse axis W.,

The vertical oscillation of themine unit about the transverse axis W is permitted by the flow of the rubber of the mountings 5 and I, and the yieldable character of the rear mounting I. The rubber mounting ,I is deflected during oscillation of the engine unit about the axis G-G, and the rubber mounting 5 is deflected during oscillation of the engine unit about the axis TT. The oscillation of the power plant about axis W is controlled by the mountings 5 and I. The

oscillations about the axes 6-6 and TT are controlled by other means explained hereinafter.

The power plant 2 is provided with stabilizer means 9 which maybe connected to the frame 8 as at I2, shown in Figure 6. Or the stabilizer means I8 (see Figure 7) may be connected with the bracket II as at I3, which bracket II is carried by the third member I4 extending to the rear axle of the'vehicle. Or the power plant 2 may be provided with stabilizer means I5 (see Figure 8) connected to the front axle I8 by shackles or by other movable means, as'shown I at I1. Or the power plant 2 may be' provided with stabilizer means I8 to the floating member 4' as shown in Figure I8 combined with one of the stabilizer means mentioned above. In any case, the power-plant is free to oscillate with respect to the frame against the resilient opposition of stabilizer means connected to some part of the vehicle.

The'floating member 4 may be provided with means 22 as shown in Figure 10, or to the front spring 2I, by stabilizing means 28, as' shown in Figure II, or to the front reach 42 by means of the spring 2I' and shackles 4| as shown in Fig- 7 ure 12 or by stabilizer means I8 to the engine unit 2 as shown in Figure 13. In any case, the floating is located properly and resiliently by stabilizer means to some part of the vehicle.

'In the case of the construction shown in Figure 13, in which stabilizer means extends between the floating member and the engine unit, either floating member or engine must naturally have one of the other stabilizer constructions shown connecting to some part of the vehicle.

In the construction shown in Figure 14, the floating member 24 has the stabilizer means 25 to the frame cross-member 8. The mounting I in this case is at ,about forty-five (45) degrees removed from the vertical line through the mounting 5. The construction shown in Figure 14 provides a floating movement of the powerplant at about forty-five (45") degrees from the vertical.

In the construction shown in Figure 15, the floating member 28 has the metallic stabilizer means 21 and the non-metallic stabilizer means 28, connecting it with the frame 28. The construction shown in Figure 15 provides a floating movement of the power-plant that is substantially vertical.

Neither of these last two constructions as shown provides an axis of oscillation concentric with the engine shaft 48. However, it is a matter of choice as to the direction or angle takenby the floating member from its mounting upon the frame.

Hgure 16 illustrates this point. The circle 80 indicate one mounting of the floating member which may be on the frame or on the engine unit, and the circles 8I88 illustrate possible positions of the other mounting of the floating member which correspondingly may be on the engine unit or on the frame. In any case, the floating member will have the proper, satisfactory, and necessary stabilizer means to some part of the vehicle, and will be combined with the rear mounting I which gives substantially universal pivotal movement between the power plant and the frame, and the engine unit will have proper mounted in a rubber mounting in the upper end of a pedestal 4|, which pedestal is in turn carried by a transverse leaf-spring 42- supported by suitable shackles on the front axle 43. This construction is similar to that shown in Figs. 2 to 5 except the pedestal is mounted on an axle supported spring instead of on the frame.

It will thus be seen that by the proper selection of mountings and materials and construction, angular position and points of frame or engine engagement for either end of the floating member and by proper selection of stabilizer means, from the floating member and from the engine unit to some part of the vehicle, any desired resiliently opposed movement or combination of movements may be given the power-plant in order to provide for any possible movement of the power-plant with respect to the frame to properly cushion its forces 'at all times.

Though only a few possible combinations of the various elements of my invention are shown and described,' I do not mean to limit myself thereby since I am well aware that any floating member stabilizer shown or any other proper floating 7 engine unit, a rear pivotal mounting supported member stabilizer may be combined with any engine unit stabilizer shown or with any other' proper engine unit stabilizer, and such combination may have any front and rear mountingcombinat'ion shown or any other proper front and rear mounting combination so long as the final result is that the engine unit may have resiliently opposed oscillation on two different longitudinal axes of oscillation and one transverse axis of oscillation.

I claim: I

1. The combination in a motor vehicle having a frame structure, of an engine unit, rear mounting means supported by the frame and supporting the rear portion of the engine unit, a floating member at the front of the engine unit and having means supported by the vehicle and pivotally supporting the floating member, and said floating member having. means supporting a portion of the engine unit for movement relative thereto.

2. The combination in a motor vehicle, of-an engine unit, a single rear pivotal mounting supported by the frame of the vehicle and supporting and longitudinally locating the engine unit, a floating member at the front of the engine unit having a mounting supported by the frame and pivotally supporting the floating member and having a mounting pivotally supporting the engine unit, stabilizing means between the engine unit and some part of the vehicle, and stabilizing means between the floating member and some part of the vehicle.

3. The combination in a motor vehicle, of an engine unit, a rear pivotal mounting supported by the frame of the vehicle and supporting and longitudinally locating the rear portion of the engine unit, a floating member pivotally carried by the frame and pivotally supporting the front of the engine unit providing separated pivotal means whereby the engine unit has two axes of oscillation converging toward the rear mounting, stabilizing means between the engine unit and some part of the vehicle, and stabilizing means between said floating member and some part of the vehicle.

4. The combination in a motor vehicle, of an by the frame of the vehicle and supporting and longitudinally locating the rear portion of the engine unit, a floating member pivotally mounted upon the frame and pivotally supporting the front I of the engine unit by a pivotal connection therewith whereby the mounting of the floating member on the frame and of the engine unit on the floating member will provide two pivot points each cooperating with the rear mounting to form axes of oscillation for the engine unit which axes are separated at the front of the engine unit and converge toward the rear mounting thereof, and stabilizer means between the engine unit and floating member andsome part of the vehicle.

5. In a motor vehicle, the combination of an engine unit, a main support having a single pivot carrying an end of the engine unit, a swinging support carrying the opposite end of the engine unit and having a pivotal connection with the main support constructed to provide swinging movement of said swinging support relative thereto, means for stabilizing said swinging supporting the rear portion of the engine unit, and

a single floating member pivotally supported at the front of the engine unit and supporting the front portion of said engine unit.

7. In a motor vehicle, the combination of an engine unit, a single pivot mounting for supporting the rear of the engine unit, a single floating member pivotally supported at the front of the engine unit supporting the front end of engine unit, and stabilizing means for said floating member.

8. In a motor mounting, the combination of supporting structure, a floating member pivoted to said supporting structure, said floating member having a pivot for the moto said pivots being arranged approximately in an upright plane extending longitudinally of the motor, and stabilizing means for the floating member.

9. In a motor mounting, the combination-of supporting structure, a floating member pivoted to said supporting structure and extending upwardly therefrom, said floating member having a pivot for the motor at the upper end thereof, said pivots being disposed approximately in a vertical plane extending longitudinally of the motor, and

stabilizing means for-the floating member arranged on opposite sides of said upright plane.

10. In a motor vehicle, the combination with an engine unit, of at least two mounting means therefor, one of which comprises a floating member, a pivotal support for said floating member, a pivot connecting the engine unit with said floating member, said pnmts being arranged approximately in an upright plane extending longitudinally of the engine unit, and stabilizing means connected with said floating member.

resilient means bearing against the .floating member on opposite sides of said upright plane.

12. The combination in a vehicle having a support and an engine unit, of mounting means at one end providing movable suppo t for the engine unit, a floating member supporting the op- 1 posite end of the engine unit for movement relative to'the floating member, resilient means mounting the floating member on the support, and stabilizing means between the floating member and some part of the vehicle.

13. The combination of a chassis, an engine unit,'and means mounting the engine unit on the chassis comprising a floating member pivotally supported on the chassis, and separate stabilizing means extending from the engine unit and from the floating member to some part of the chassis, said floating member providing pivotal support for the engine unit, whereby the engine unit has two converging axes of oscillation with respect to the support.

14. The combination of a frame or support, a power plant, a mounting at one end which accommodates itself to any position or movement of the power plant at that end, a pivotallymounted floating member having pivotal support for the other end of the power plant providing two spaced points of oscillation, and independent means for stabilizing separately said spaced points of oscillation.

15. A mounting for an engine unit comprising a floating pedestal having a support for movably supporting the engine unit, non-metallic resilient means supporting said floating pedestal permitting freedom of movement of the engine unit in all directions, and stabilizing means connected with said floating pedestal.

16. In a motor vehicle, the combination with a support, and an engine unit, of movable mounting means supporting an end portion of the engine unit on the support, a floating member having pivotal connection with the engine unit, and means for supporting said floating means for ap proximately pivotal movement, said pivots being arranged to support the engine unit for oscillation about two longitudinally extending axes converging toward the movable mounting means. I

17. The combination with an engine unit having a tendency of torque cushioning oscillation during operation, of mounting means for said engine unit comprising two vertically spaced mountings adjacent an end of the engine unit and a mounting structure for the other end portion of the engine unit providing a single pivot point, and said mountings and mounting structure being so constructed and arranged as to provide for substantially oscillatory movement of the engine unit about separate converging longitudinal axes, one of which extends adjacent the engine crankshaft and the other is spaced above said first-mentioned axis at the flrst mentioned end of the engine unit.

18. The combination with an engine unit having a tendency of torque cushioning oscillation during operation, of mounting means for said engine unit comprising two vertically spaced mountings adjacent an end of the engine unit and a mounting structure for the other end por-r tion of the engine unit providing a single pivot point, and said mountings and mounting struc ture being so constructedand arranged as to provide for substantially pivotal movement of the engine unit about separate longitudinal axes,.

one of which extends adjacent the engine crankshaft and the other is spaced above said firstmentioned axis at the first-mentioned end of the engine unit, movement about both of said axes being resiliently opposed.

19. The combination with an engine unit having a tendency of torque cushioning oscillation during operation, a resilient mounting supporting the rear end portion of the engine unit, a front mounting structure'having two vertically spaced mountings so constructed and arranged as to provide for substantially pivotal movement of the engine unit about separate longitudinal axes extending fromthe respective front mountings approximately to the rear mounting, one of which axes is located adjacent the engine crankshaft and the other is spaced above the firsting a resilient mounting connected with an endportion of theengine unit and mounting said end portion for approximately pivotal movement,

a floating member supporting said resilient mounting, and resilient means providing a substantially oscillatory support for said floating member. a

21. A mounting for an engine unit comprising a floating pedestal having a substantially pivota1 support for the engine unit, and a substantially pivotal resilient support for said floating pedestal permitting freedom of movement of the engine unit in all transverse directions.

. 22; A mounting for an engine unit comprising a floating pedestal having a substantially pivotal support for the engine unit, and resilient supporting means for said floating pedestal including a substantially pivotal supporting portion and transversely spaced resilient portions, permitting freedom of movement of the engine unit .in all transverse directions.

ber supporting aportion of the engine unit for.

movement relative to said floating member, means movably supporting said floating member on the vehicle, and resilient stabilizing means connected between the engine unit and the floating member.

25. The combination in a vehicle having a support, of an engine unit, and means, for movably supporting the engine unit on the support, said means including a floating member movably mounted on the support and movably supporting a portion of the engine unit, and, means for resiliently opposing relative movement between the engine unit and the floating member.

HOLLAND S. TRO'I'I.