US2460338A - Compression relief device for starting engines - Google Patents

Description

Feb. 1, 1949. c. c. CASTILLO 2,460,338

COMPRESSION RELIEF DEVICE FOR STARTING ENGINES Filed April 22, 1947 2 Sheets-Sheet l INVENTOR. CIR/L0 C. CASTILLO ATTOPN E Y Feb. 1, 1949. c. c. CASTILLO 2,460,338

COMPRESSION RELIEF DEVICE FOR STARTING ENGINES Filed April 22, 1947 2 Sheets-Sheet 2 3 f E Z 2 INVENTOR.

Che/4o CT 64377440 Patented Feb. 1, 1949 PATENT OFFICE conrnsssion mamas nnvrca FOR s'rmmqsncmss -Girilo o. Castillo, nosnngeles. Calif. Application April 22. 1947, Serial No. 743.022 l .6 cl ims. (01. 123-482.)

This invention relatesto akoompression relief device for starting an-en-glne. I V

The general lobzl'ectof the dnventlon is to provide an improved apparatus for efiec ting prompt starting of a high compression internal combustion engine such as-of the Diesel type;

A more specific 'ohiec't of the invention is to provide a novel means'for actuating the compresslon reducingmember of a Diesel engine to low compression pos'rtion'and thereafter caus ing actuation of the starter mechanism.

A further obedt of the invention is to provide a novel, manually actuated. 'val ve controlled, compressed air operated starter for Diesel en glnes.

Other objects and advantages of my irrverrtiofn will 'be apparent from the rollowing description, taken connection with the accompanying drawings, wl-xcrein r Fig. 1 is a-di-agramrnatrc section showing an amltomzrtlve' vehicle improved starter applled thereto;

Fig. 2 is a section taken-chime 2-4, Fig. 1;

Fig. 3' is a sectlontaken on line 3-3', Fig. El;

Fig. 4 1s a View similar to roe. 3. show ingparts in anotherpos'i tion: I, i

Fig. 5 is a sectlon taken on llne a' -iffiig. 3;

Fig. -6 is a frag-mentairysection taken on line 6-6, Fig. 3;

Fig. 7 is a fragmentary section taken onflirle 1--7,Fig. 5; 1

Fig. 8' is an enlarged elevation w lt-h parts in section showing the starter operating mechanism'; K v

Fig. '9wis a fragmentary section taken on line 9-4], Fig. 4; t

Fig. 10 is a sectional- View taken on line l'fl, Fig. 2,a:nd j

Fig. 11 is a section throughthe engineflywheel housing showing the connectionof the engine starter to the engine shaft.

Referring to the drawingfby reference charactors, I have shown my invention as embodied in a starting apparatus which 'is indicated generally at I11. As shown, the apparatus is mount ed on an automotive vehicle- Hwhich :is driven by aDiesel engine.

The engine includes a flywheel me, having a housing lab 'thereahouts. The engine includes a shaft 120, which is oonneoted'to the flywheel. The flywheel includes teeth Ii2d,.-lwmch mesh teeth He on astarter gear 4 292. "Thest'aa'ter gear I I2} is mounted-on "a My. Match is driven by astartmg motor. Mechanisms: tmstypetor View. with par'tsfin my turning over the motorls old and forms no part of the present invention.

Diesel engines operate under a high compression and in order to permit the starting motor 3 to operate, it is necessary that this compression be decreased while the startmg motor is building up speed in the engine. To permit this decrease of compression in the cylinders, Diesel engines are usually provided with means such as an arm 10; l3 mounted on a shaft l4 and the construction is such that when the arm is rocked from a full line position in Fig. 2 to a broken line position .in this figure the compression will be reduced. The mechanism of this type for reducing corn-- we pression is old and for-ms no part of the present invention.

Referring again to the drawing, I have shown the arm l3 as engaged by oneend l5 of a'spr'ing' IS. The other end H ofthe spring is shown as attached to a boss 18 on the engine l2 so that the compression is normally fully maintained.

In order to first break the compression and cause the starter to be operated, I provide a cylinder -9 which has a forwardly projecting '2'5' arm 20 which has a slot 21. g The arm is pi-vo'tally attached to the boss *8 by a threaded shaft 22. The cylinder E9 receives a piston 2'3 which has a piston rod 24 passing a head 2 5 on the cylinder. The piston rod 24 includes an end fitting 26 which secured by a pin 2 to the free end of the arm 33.

The rorward end of the cylinder 1% is provided with a fitting 2 8 which is connected to a flexible tube 29 through which compressed air may he delivered to the cylinder. The cylinder also includes another fittings!) which is connectedito a flexible tube 3| to the starter. Thus when :conmress'edQ-air asses'throogh the pipe 29420 the cylinderlt 111 loperatethe broken l-ine position in Fig; 2 and during its .motion after the arm I3 has been mocked to (compression breaking position the piston will clear the fitting .30 thus permitting compressed air in the cylinder to pass through the pipe 34 to the starter. "The starter includes an operating member 32 which 'is conventional and which when pushed will cause the starting motor to turn over the engine crank shaft.

In my construction, as shown, Imount a sleeve 33 about the starter button. "The cylinder includes opposed slots 3-! through which pins 35 move. inner cylinder tit-which has a closed end 31. The

end 31 includes a bleed-aperture 31". "The inner 23 causing the'latter'tomoye-thesim as to the The pins =35 are mounted in a sliding cylinder 35 includes a fitting 38 at one side and a slot 39 in the sleeve 33 permits movement of the fitting 33 and the cylinder 3%. Ihe tube 35 is preferably flexible and is connected to the fitting 38 so that compressed air from the tube 3! may pass to the interior of the sliding cylinder 35 to cause inward movement of a piston it. The piston ll) engages the starter member 32 so that when compressed air passes through to tube 3! the piston "50 will cause an inward movement of the starter member 32 to operate the starter. The conventional starter stem 32 is normally spring pressed so that the piston ll] is urged to the position shown in Fig. 6.

To permit operation of the starter in the absence of a supply of compressed air-,1 may mount a plunger ll on the foot boardlfi of the vehicle.

The plunger is normally urged to the position shown in Fig. 6 by a spring d3. A head id of the plun er 44 engages the head 3? of the cylinder t i so that whena button 35 on the-stem 65 is depressed the cylinder 3%- will move inwardly and the head 31 will engage the piston and will move the latter, causing the starter memberSZ to be depressed.

Itwill be understood that the plunger ii and associated parts provided for effecting the starting operation 'are of an emergency nature and would only be operated on rare occasions when the supply of compressed air is exhausted.

In order to supply compressed. air to the pipe 29, I provide a pipe 56 which is connected by 4 hole 19 in the closure 62. The hole 19 communicates with the fitting 29.

When the parts are in the position shown in Fig. 3, the hole 79 communicates with a hole 80 in the closure 62 and the hole as communicates with a hole 8| in the valve 59. The hole 8! communicates with the chamber 58 so that in the position of Fig. 3 compressed air passes through the pipe 50, the valve 51, which is then'open to the-chamber 58, through hole 3|, hole 19 and to pipe 29 to actuate the piston 23 to thereby rock the arm 13 and thus break the compression. As

soon as the piston 23 clears the fitting 30 compressed air passes through the tube 3| and fitting 0 position the pipe 29 communicates with the aperture18 and through the holes [6, bore 15, hole 71, hole H and hole 10, to the atmosphere. This bleeds the cylinder [9 so that the spring l6 moves the compression controlling arm 13 to full com- 25 pression position and the engine operates indefitting 5i to a compressed air reservoir 52 which is f provided with compressed air from any suitable source. The pipe 58 is connected by a fitting 53 in a control valve base 56. The fitting 53'communicateswith a chamber 55 in the base 54. The chamber 55 in turn communicates with a check valve 55 which includes a projecting valve ball 5'? which is normally seated as by a spring 51'. The valve ball 5? prevents normal passage of air through the pipe 55. The valve base 5% has a cavity 58 in which a control valve member 59 rotates. The valve to includes a stem 9 which passes through a hole 61 in a closure 32. The, closure is held in place as by bolts 53.

The-lower face of the valve 59 includes-a de- I pendingboss 6:1 which may have a cam end 65. The boss 64 extends peripherally aboutthe valve head 59 so that when the valve head is turned (in the act of starting the engine, as will be later described), the cam 65 will engage the valve ball 57 to open the va1ve56 and allow compressed air to pass from the pipe 50 to the chamber 58.

The closure 62 includes a radially drilled hole 10 which communicates with a hole 1: which 7 l3 limit the movement of the handle l3. When the handle 13 is in the position shown in Fig. 3

the holes Hand 7'! are both closed. When the handle 13 is in the position shown in Fig. 4, the hole 7! communicates with the hole H and through thehole Hi to the atmosphere but at the same time the hole 76 communicates with a hole l8 which in turn communicates with a radial pendent of the starter. Air in the cylinder 36 gradually bleeds therefrom through the holes 31.

In the absence of a supply of compressed air, the arm l3 may be rocked manually to the broken line position shownin Fig. 2 and. thereafter the button maybe depressed to push the cylinder 36 inwardly and thereby actuate the starter.

From the foregoing description it will be apparent that I have invented a novel starting device which is simple in construction and is reliable in operation. 7 7

Having thus'described my invention, I claim: 1. In a starting device for an internal combustion engine which includes a shiftable com- 40 pression releasing arm and a, movable starter operating member, a cylinder, means adapted to support the cylinder on an engine, a piston in the cylinder, means adapted to connect the piston to a compression releasing arm, a source of compressed air, acontrol valve, conduit. means connecting the source of compressed air to the control valve, means connectingsaid control valve to saidcylinder, said control valve when in on position permitting flow from the source tothe cylinder, means to bleed the cylinder to the atmosphere when the control valve is in off. position, a second cylinder adapted to be disposed adjacent to a starter operating member, a second piston in the second cylinder, said second pistonbeing adapted to actuate a starter operating member, conduit; means to supply fluid to the second cylinder after the first piston has started its movement, and means adapted to normallyport the cylinder on an engine, a piston in the cylinder, means adapted to connect the piston to acompression releasing arm, a source of compressed air, a control valve, conduitmeans connecting the source of compressed air to the control valve, said conduit means including a check valve normally preventing the flow from the source of compressed air to the control valve, means operable when the control valve is moved from fo position to release the check valve to permit compressed airito pass to said control c eeses valve, means --connectmz soid,control valve to said cylinder, said control valve when in "021 position permitting flow from the source to the cylinder, means to bleed the cylinder "to the atmosphere when the control valve isin "off" position; a-s'econd-cylinder adapted to be disposed adjacentte a starter operating, membena second piston in the second cylinder, said second piston being adapted to engage a starter operating'member, conduit means'to supply fluid 'totne second cylinder after the first piston has started its movement, and means adapted to normally urge the compression releasing arm to full compressed position.

3. In a starting device for an internal combustion engine which includes a shiftable compression releasing arm and a movable starter operating member, a cylinder, means adapted to support the cylinder on an engine, a piston in the cylinder, means adapted to connect the piston to the compression releasing arm, a source of compressed air, a control valve, conduit means connecting the source of compressed air to the control valve, means to bleed the cylinder to the atmosphere when the control valve is in ofi position, a sleeve cylinder adapted to be disposed adjacent to a starter operating member, an inner cylinder in said sleeve, means to limit the movement of the inner cylinder in the sleeve, a piston in the sleeve, said piston being adapted to engage a starter operating member, manual means for moving said sleeve to actuate the starter, conduit means to supply fluid to the inner cylinder, and means to connect the last mentioned conduit means to the first cylinder at a location to permit passage of compressed air to the last mentioned conduit when the first mentioned piston approaches the outer limit of its movement.

4. In a starting device for an internal combustion engine which includes a shiftable compression releasing arm and a movable starter operating member, a cylinder, means adapted to support the cylinder on an engine, a piston in the cylinder, means adapted to connect the piston to the compression releasing arm, a source of compressed air, a control valve, conduit means connecting the source of compressed air to the control valve, said conduit means including a check valve normally preventing fiow from the source of compressed air tothe control valve, means operable when the control valve is moved from 011" position to release said check valve to permit compressed air to pass to said control valve, means connecting said control valve to said cylinder, said control valve when in on position permitting now from the source to the cylinder, means to bleed the cylinder to the atmosphere when the control valve is in the o position, a second cylinder adapted to be disposed adjacent to a starter operating member, a second piston in the second cylinder, said second piston being adapted to engage a starter operating member, conduit means to supply fluid to the second cylinder, means to connect the last men tioned conduit means to the first cylinder at a location to permit passage of compressed air to the last mentioned conduit when the first mentioned piston approaches the outer limit of its movement, and means adapted to normally urge the compression releasing arm to full compression position,

5. In a starting device for an internal combustion engine which includes a shiftable compression releasing arm and a movable starter operating member, a cylinder, means adapted to support the cylinder on an engine, a piston in the eyl inden'tnoans adapted to connect the piston to a compression rel-easing a source of compressed: air, a control valve, conduit means connecting the sou-roe of compressed air to the control valve, said conduitmea-ns including a check valvenormall'y preventing flow from the source of compressed air to the control valve, means operable when the control valve is moved from on position to release said check valve to permit compressed air to pass tosjaid control valve, means connecting said control valve to said cylinder, said control valve when in on position permitting flow from the source to the cylinder, means to bleed the cylinder to the atmosphere when the control valve is in off position, a sleeve adapted to be disposed adjacent to a starter operating member, a second cylinder in said sleeve, means to limit the movement of the second cylinder in the sleeve, a second piston in the second cylinder, said second piston being adapted to engage a starter operating member, manual means for moving said second cylinder to actuate a starter, conduit means to supply fiuid to the second cylinder, means to connect the last mentioned conduit means to the first cylinder at a location to permit passage of compressed air to the last mentioned conduit when the first mentioned piston approaches the outer limit of its movement, and means adapted to normally urge the compression releasing arm to full compression position.

6. In a starting device for an internal combustion engine which includes a shiftable compression releasing arm and a movable starter operating member, a cylinder, means adapted to support the cylinder on an engine, a piston in the cylinder, means adapted to connect the piston to a compression releasing arm, a source of compressed air, a control valve including a valve chamber, conduit means connecting the source of compressed air to the chamber, said conduit means including a check valve, a valve member rotatable to on and off positions and disposed in said chamber, means carried by the valve member and operable when'the valve member is moved from off position to release said check valve to permit compressed air to enter said chamber, a closure for said chamber, said closure having a conduit therein, means connecting said conduit to one end of said cylinder, said valve member having a conduit therethrough, said conduit communicating when the valve member is in on position with said chamber and said last mentioned conduit, said closure having a second conduit, said second conduit communicating with the atmosphere at one end, said valve member having a conduit communicating with the other end of said second conduit when the valve member is in o position, said closure having an exhaust conduit communicating with said first valve member conduit, said closure exhaust conduit communicating with said first valve member conduit when the valve member is in oii position to bleed the cylinder, a sleeve adapted to be disposed adjacent to a starter operating member, a second cylinder in said sleeve, means to limit the movement of the second cylinder in the sleeve, a second piston in the second cylinder, said second piston being adapted to engage a starter operating member, manual means for moving said second cylinder to actuate a starter operating member, conduit means to supply fluid to the cylinder, means to connect the last mentioned conduit means to the first cylinder at a location to permit passage of com- REFERENCES CITED The following references are of record in the file of this patent;

Number Q; .b rE iAI SL AIENT 1; 7

Name I I -Date I-Iarley Apr. 27, 1915 Godfrey Dec. 19, 1939 Feb 3, 1942 FoREI N PATENLS Country Date France -1. 1939

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