US1799095A

US1799095A - Engine-cooling system

Info

Publication number: US1799095A
Application number: US218019A
Authority: US
Inventors: Walter S Fisher
Original assignee: Willys Overland Co
Current assignee: Jeep Corp
Priority date: 1927-09-07
Filing date: 1927-09-07
Publication date: 1931-03-31
Anticipated expiration: 1948-03-31

Description

March 31, 1931. w. s. FISHER 1,799,095

ENGINE COOLI NG SYSTEM Filed Sept. 7, 1927 INVEN TOR. Mn 7'? 6. 77.5mm

BY mAwm/zm A TTORN'L' Y1 Patented Mar. 31, 1931 U rsn- STATES PATENT Fries WALTER s. rismm, or 1 mm, 01am, ASSIGNOR TO THE WILLYS-OVERLANDVQCOM- PARTY; OF TGLEDG, OHIO,

A CORPORATION 9F QHIO ENGINE-COOLING srsrrEr/r Application filed September My invention relates to the water circulatory system of internal combustion engines, especially to engines of the so-called Knight class, and it has particular relationto means 5 for improving the circulation of water through the head of the engine.

One object of the invention is to provide means for modifying the normal path of the water entering the head of a Knight engine 5 whereby better cooling of the portion of the head penetratingthe combustion chamber is realized.

Another object of the invention is to provide a water circulatory system for the head '15 of Knight engines which is capable of performing its function to the fullest e'xtent and at the same time permitting a greater variation in the dimensions of the engine castings, j

It is an additional object of thepresent inventioni to provide a simple easily-installed water battle for Knight engines which may be employed without modifying the design of the head now employed.

It has been suggested. to deflect the, flow of: water intothe well portion of the head by providingthe well of each. head with longitudinal baflies having openings adjacent the bottomof the Well and to provide thecylinder so cover witha corresponding longitudinalbaffie which in the assembled position, is contiguous with the head:v bafiies. This, method of cooling the heads is comparatively satisfactory, but requires a somewhat intricatev cover casting and the variations in manufacture do not always secure thedesired'relation between cooperative members.

According to the present invention, there is provided a separatedetachable baiiie for each cylinder that formswiththehead a closed conduitbetween the cylinder jacket and one-half of the head well. The baffle is preferably formed of sheet metal and is provid-ed with ears having openings that permit it to be secured to the engine by the usual head bolts. The head construction is practically identical with that used with the cylinder cover having a longitudinal battle, that is, battles are provided in the well that divide it, into two lateral compartments that 7, 1927. Serial No. 218,019.

communicate with each other through openings near the lower part'of the well.

One of the embodiments of the invention which may be preferred, 'is illustrated in the accompanying drawings, in which Figure I is a planview of a portionof an engine block with the cylinder cover removed and illustratesthe assembled relation of the water baffles formed as a unitary element. 7 r r Fig. II is a sectional view taken along the line IIII of Fig. 1, and

Fig. III is a perspective view of the under side of a baflie element.

The essentialelements of a conventional Knight engine include a cylinder casting; 10 having a water jacket 11, a pair of

concentric sleeves

12 and 13 within the cylinden'and a depending head 14 within thesleeves which is secured to the cylinder by means of bolts 15. The cylinder head is-formed with-I a recess or well 16 at the top thus forming a cylinder head cooling jacket that, permits water to enter and cool the portion. ofthe-head that isin contact with the heated gases. The well is annular in-shape because of the upstanding barrel portion 24' that is used for premitting a spark plug 17 to be inserted in the threaded opening in the head. A watertight cover 18 having the usual gasket 26 for sealing the opening between thecover 18 and the barrel 24: is placed over the entireengine and servestoconnect the cylinder waterjacket 11 with the well portion of the head 16 and provides a cooling system; for the engine in which the water may be circulated to and.

from the radiator in the usual manner, In order to direct the flow ofwater from the cylinder jacket through one-side of the head and out the othersid'e in a manner to cause the water to impinge against the metal at the bottom of the well, I have provided each headwith baiiies 19"thatdivide the annular well into two lateral compartments. Openings are provided in the baflienearthe bottom of the well for permitting free circulation 1 between. the compartments. A pressed steel or brass baffle .21 of somewhat cup-shape design is placed over the top of the cylinder head and secured thereto by the bolts 15 in amanner to direct all the water passing through the cylinder jacket opening 21a into one of the lateral compartments of the cylinder head well. The water so directed in order to reach the other side of the engine, must necessarily pass downwardly toward the bottom of the well and through the openings in the head battle as is indicated by the arrows in Fig. II. The deflection of the water toward the lower portion of the well is very desirable in that the heated portion of the head in contact with the exploded gases is in the direct path of the water and is much better cooled than it would be otherwise. The present method of securing this desired result is superior to other means heretofore used in that the stampings are inexpensive, and may be made easily to conform to the contour of the cylinder head. Moreover, the stampings may be made in integral units if so desired. Thus, in Fig. I there is illustrated a unitary bafiie or deflecting member consisting of a plurality of baffle members 21 joined to each other at 22. In some respects, a unitary element may be more desirable than a structure embodying individual baiiling members. It is to be noted, however, that the individual bar es, one of which is illustrated in Fig. III, may be utilized with equally successful results insofar as effectiveness of operation is concerned.

It is to be understood, of course, that the invention is not limited to the precise baille illustrated, and that the principles underlying the same may be extended to include other modifications which are likewise aimed to modify the path of travel of the water entering the inlet whereby it is deflected downwardly into the lower extremity of the well. From a consideration of the invention as illustrated and hereinabove described, it will be apparent that it affords a means of insuring an adequate circulation of water through the well of the cylinder head without requiring the adherence to a small margin of tolerance, and also without necessitating the presence of packing material which is susceptible to deterioration and applied only with considerable inconvenience.

I claim:

1. In an internal combustion engine of the Knightclass, including a cylinder casting, a plurality of cylinder heads each having a well portion, a cover for the heads and casting, and means intermediate the cover and the casting for deflecting the water into the well.

2. In an internal combustion engine of the Knight class, a jacketed cylinder casting, a plurality of cylinder heads each having a well portion, a cover for said heads and means intermediate the heads and cover for deflecting the water through the well.

3. In an internal combustion engine of the Knight class, a cylinder casting having a jacket for circulating water therethrough, and an opening for discharging the same, a plurality of cylinder heads secured to the casting, a cover cooperatively disposed with respect to the heads and cylinder casting and adapted to receive the water discharged from said casting, bafHe means positioned intermediate the cover and casting to deflect the water flowing from the cylinder casting to the head whereby it will be directed to the lower extremities of the head.

a. An article of manufacture: a water defiector for Knight engines comprising a metallic member adapted to be secured between the head and cylinder of the engine and in engagement with the well, said member being adapted to deflect the water entering the head about the lower extremities of the well.

5. A Knight engine comprising a cylinder casting having a plurality of cylinder chambers, reciprocative sleeves and pistons, a depending cylinder head for each of said cylinder chambers mounted on said casting, a water jacket cover and a pressed metal deflector disposed between the cover and head, adapted to direct the water from the cylinder casting into the well of the head.

6. An internal combustion engine, of the sleeve valve type comprising in combination, a water jacketed cylinder, a piston operable therein, a water jacketed cylinder head forming a sleeve pocket with the cylinder, and a sheet metal cylinder head water jacket cover constructed and positioned for co-operation with the cylinder head to direct the flow of cooling water from the cylinder jacket generally downwardly into and across the cylinder head.

7. An internal combustion engine of the sleeve valve type comprising in combination, a water jacketed cylinder, a piston operable therein, a water jacketed cylinder head form-- ing a sleeve pocket with the cylinder, a cylinder head water jacket cover eo-operating with the cylinder head water jacket to provide a conduit for the cooling water, and a cylinder head top cover forming a water header.

8. An internal combustion engine of the sleeve valve type comprising in combination, a water jacketed cylinder, a piston operable therein, a water acketed cylinder head forming a sleeve pocket with the cylinder, a cylinder head water jacket cover, said cylinder head and cover provided with co-operating battles for directing water from the cylinder jacket to flow generally downwardly into and across the cylinder head, and a cylinder head top cover.

9. An internal combustion engine of the sleeve valve type comprising in combination, a water jacketed cylinder, a piston operable therein, a water jacketed cylinder head forming a sleeve pocket with the cylinder, a cylinder head water acket cover, and co-operatingbaifles on the cylinder head and jacket combination, a jacketed cylinder, a jacketed cylinder head closing the cylinder, a cylinder head cover, and means separate from the head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head acket.

12. A sleeve valve engine comprising in combination, a jacketed cylinder, a jacketed cylinder head closing the cylinder, a cylinder head cover, and an element separate from the head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head jacket.

13. A sleeve valve engine comprising in combination, a acketed cylinder, a jacketed cylinder head closing the cylinder, a cylin der headcover, and a sheet metal stamping separate from the head and cover enclosed by the cover [constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head jacket.

14. A sleeve'valve engine comprising in combination, "a jacketed cylinder, a jacketed cylinder head closing the cylinder, a cylinder head cover, and an element separate from the head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head jacket, said element having a portion seated on the cylinder upper'end.

15. Asleeve valve engine comprising in combination, a jacketed cylinder, a jacketed cylinder head closing the cylinder, a cylinder head cover, and an element separate from the head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from thecylinder jacket to the cylinder head jacket, said element having a portion seated onth-e cylinder upper end intermediate the cylinder head-and cover.

16. A sleeve valve engine comprising in combination, a jacketed cylinder, a jacketed cylinder head closing the cylinder, acylinder head cover, and an element separate from the head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head jacket, said element having a portion seated 'on the cylinder upper end,

said element having a portion cooperating with the cylinder head for maintaining the element in position. I

17. A sleeve valve engine comprising in combination, a acket-ed cylinder, a acketed cylinder head closing the cylinder, a cylinder head co ver,;and an element separate from the head and cover enclosed by the cover con- .structed and arranged'to conduct a cooling medium from the cylinder jacket to the cylinder head jacket, said element provided with a downwardly flanged portion spaced to one side of the cylinder head.

18. A- sleeve valve engine comprising in,

combination, a jacketed cylinder having a cooling medium outlet in its upper end, a cylinder head having a flanged portion seated on said cylinder upper end to oneside of said cylinder outlet, a cover for the cylinder head having a portion seated on the other side of' said cylinder outlet, and a coolingmedium deflecting and guiding element enclosed by the cover and having a portion seated on said cylinder upper end adjacent said cylinder.

outlet.

'19. A sleeve valve engine comprising in combination, a jacketed cylinder, a j acketed cylinder head closing the cylinder, a cylinder head cover, means separate from the,

head and cover enclosed by the cover constructed and arranged to conduct a cooling medium from the cylinder jacket to the cylinder head jacket, and cooling medium deliecting means carried by the cylinder head.

and cooperating with the first said means. 20. In a sleeve valve engine, a jacketed cylinder, a cylinder head having a jacket depending in the cylinder, a cylinder head cover anda member beneath the cover -over-.

lying at least a portioir'of the cylinder head jacket, said member communicating with the cylinder jacket to receive water therefrom.

'21. An internalcombustion engine of the sleeve valve type comprising in combina-.

ing. the barrel for locating the member in position, said member constructed to form a Water deflecting passage in conjunction with the cylinder head acket for directing water from the cylinder jacket to flow generally downwardly into and across the cylinder head. i

22. A sleeve valve engine comprising a cylinder, a cylinder head, a cover member, a member within the cover for guiding cooling water into the cylinder head, said second member having a recessed portion engaging the cylinder head.

23. A sleeve valve engine comprising a cylinder, a cylinder head member, a cover member, an element within the cover for guiding cooling water into the cylinder head, and positioning means for said element co-operating with one of said members.

24;. In a sleeve valve engine, a acketed cylinder, a cylinder head having an annular jacket depending in the cylinder, a cylinder head cover, and a member beneath the cover overlying the annular cylinder head acket, said member communicating with the cylinder jacket to receive water therefrom.

25. In a sleeve valve engine, a jacketed cylinder, a cylinder head having a jacket depending in the cylinder, a cylinder head cover, and a member bridging the cylinder head acket and forming a water conduit with the cylinder head acket.

26. In a sleeve valve engine, a cylinder, a cylinder head having a flanged portion seated on the cylinder and formed with a water jacket depending in the cylinder, and a water deflecting battle over said depending water jacket extending upwardly and laterally to a position overlying the cylinder head flange.

27. An internal combustion engine of the sleeve valve type comprising in combination a water jacketed cylinder, a piston operable therein, a water jacketed cylinder head forming a sleeve pocket with the cylinder and provided with a barrel portion, a cylinder head cover through which said barrel extends, a sealing ring between the barrel and cylinder head cover, and a member intermediate the cylinder head cover and cylinder head having a recessed portion embracing the barrel for locating the member in position, said recess being open at an edge of said member, said member constructed to form a water deflecting passage in conjunction with the cylinder head acket for directing water from the cylinder jacket to flow generally downwardly into and across the cylinder head.

28. An internal combustion engine of the sleeve valve type comprising in combination a water acketed cylinder, a piston operable therein, a water jacketed cylinder head forming a sleeve pocket with the cylinder and provided with a barrel portion, a cylinder head cover through which said barrel e10 tends, a sealing ring between the barrel and cylinder head cover, and a member intermediate the cylinder head cover and cylinder head having a recessed portion embracing the barrel for locating the member in position, said member constructed to form a water deflecting passage in conjunction with the cylinder head jacket for directing water from the cylinder jacket to flow generally downwardly into and across the cylinder head, said member being removable independently of the sealing ring.

29. .An internal combustion engine of the sleeve valve type comprising a cylinder, a cylinder head having a water acket portion depending into said cylinder and an upstanding barrel portion, a cylinder head cover, a member within the cover co-operating with the cylinder head to direct cooling water into the cylinder head acket, said member having a locating portion only partially surrounding the barrel.

30. An internal combustion engine of the sleeve valve type comprising in combination, a water acketed cylinder, a piston operable therein, a water jacketed cylinder head forming a sleeve pocket with the cylinder and provided with a barrel portion, a cylinder head cover through which said barrel extends, a sealing ring between the barrel and cylinder head cover, and a sheet metal member intermediate the cylinder head cover and cylinder head having a recessed portion opening at an edge of the member and embracing the barrel for locating the member in position, said member constructed to form a water deflecting passage in conjunction with the cylinder head acket for directing water from the cylinder jacket to flow generally downwardly into and across the cylinder head.

31. A sleeve valve engine comprising a cylinder, a cylinder head, a cover member, a member within the cover for guiding cooling water into the cylinder head, said second member having a recessed portion open at an edge thereof, and engaging the cylinder head.

32. A sleeve valve engine comprising a cylinder, a cylinder head, a cover member, a member within the cover for guiding cooling water into the cylinder head, said second member having a substantially semicircular recessed portion engageable with the cylinder head.

33. A sleeve valve engine comprising a cylinder, a cylinder head provided with a barrel a cover member, an element within the cover for guiding cooling water into the cylinder head, said element having a recessed portion only partially surrounding the cylinder head barrel.

34. An internal combustion engine of the sleeve valve type comprising a cylinder, a cylinder head having a water jacket portion depending into said cylinder and an upstanding barrel portion, a cylinder head cover, a member within the cover co-operating with the cylinder head to direct cooling water into the cylinder head jacket, sealing means between the barrel and cylinder head cover, said member having a portion engageable with the barrel, said member being removable with respect to the cylinder head and cylinder independently of the sealing rin 35. An internal combustion engine of the sleeve valve type comprising a cylinder, a cylinder head having a water acket portion depending into said cylinder and an upstanding barrel portion, a cylinder'head cover, a

member within the cover co-operating with 36. A sleeve valve engine comprising a cylinder, a cylinder head, a cover member, a member within the cover for guiding cooling water into the cylinder head, a sealing jolnt between the cylinder head and cover member, said second member having a cylinder head engaging portion independent of the sealing joint.

In testimony whereof, I aflix my signature.

WALTER S. FISHER.