US1845620A - Precombustion chamber for airless injection oil engines - Google Patents

Description

Feb. 16, 1932. F. MODERSOHN 1,845,620

PRECOIBUSTIOH CHAIBHR FOR AIRLESS INJECTION OIL ENGINES Filed Nov. 12, 1926 I raven for: 6 Hi3: Modcrsokn ,9 $1447 ,%1;5Z6M

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DEUTZ, AKTIEHGEBIELSOHAIT, Q1 @LOGHB- rumor CHAMBER FOB AIBLESS INJECTION OIL ENGINE Application fled Iovember 1!, 1918, Serial No. 147,940, and in Germany February 8, 1058.

It is well known that oil engines have been fitted with pre-combu'stion-chambers, in

- cooled by being inserted into a space filled advan serving to the bottom of the horizontal enginesto with cooling water. This cooling space can be designed to be a part of the pro-combustion chamber both being in one piece. This makes a costly apart from the disof a comp cated shape with inaccessib e hollow parts. It isnot easily or quickly replaced which is an important item when only indifl'erent and unskilled attendance is available.v

The present invention avoids these disadvantages by the simple expedient of fixing the pre-combustion-chamber in the cylinder-castiilig0 y means of a ring-shaped piece 'as cover to the cooling water ipaoe in which the spray-valve is inserted. t is an advantage to shape the ringiece in sucha way that its outer wall exten down.

pre-combustion chamber so that the latter is enclosed by a guarding wall. In this way the combustion-cham-- bar is an extremely simple and cheap part which can be easily replaced after removing the ring-shapedfiece if varying conditions and fuels shoul require this. Y

The ring-piece is easily removable thus the cooling water space completely accessi 1e for cleaning. The outer wall of the ring-piece encloses the pro-combustion chamber and provides a ard against con tact' with the hot wall. e appearance is also im roved as the pre-combustion-chamher-w are liable to become scaled through the heat of operation.

It is also an advanta cially with.

ave the coolingspace of the spray-valve separate from the linder-cooling space, because to withdraw e ring-piece requires only draining ofi the small quantity of cooling water in the sprayvalve space leaving the cooling water space of the cylinder or cylinder-head as it is.

To accompanying drawing shows a suga I tiOll- .1 e pre-combustion-chamber b is fitted to the cylinder-head a by means of the ring-piece 1.. specimen of design embodying the or wall member a surrounding it and bolts d. It carries a collar e resting on ribs and this collar is designed to accommodate the spray valve f. The cooling water-space 9 between pre-combustion-chamber b and rigs-piece c acmgs is made tight through the machin of b and c and the packing between a and c. When the engine 1soperating the heat is transmitted directly and indirectly through the bottom and top surfaces of the chamber 6 which only e ands in the direction of the axis of the cylin er. Any additional stresses are taken up by the bolts d. Dangerous heat stresses are therefore avoided which would not be the case when pre-combustion-chamher and spray-valve are cast in one with consequent hot inner walls and cooled outer parts which must result in heavy strains in the connecting material. The desi nof the collar 0 can be such that the spray-Va ve and the chamber are not so arated if the cooling water space is opene by lessening bolts d and takin ofi ring 0.

am aware that the invention may be embodied in other specific forms without departin from the spirit or essential attributes thereo and I- therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being bad to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim as my invention: 7

1. The combination of a cylinder; a precombustion chamber communicating with the interior of said cylinder; a spray valve opening into said precombustion chamber; a 00L lar embracing said spray valve and provided with ribs engagin said precombustion cha m her to ostion sai spray valve relative thereto; an a wall member surrounding said spray valve and en aging said collar and said precombustion chamber to form with said s ray valve and with the wall of said'precom ustion chamber a water jacket for said spray valve.

2. A Diesel t pe engine having, in combination, a cylinder, a member formed to provide a re-combustion chamber having inlet and on et openings; said member formed separately from said cylinder and detachably supported on the head of the latter with said outlet opening in communication with said cylinder, a spray-valve in registry with said inlet opening, and a removable wall member surrounding said spray-valve in spaced relation to said first mentioned member and-forming with the latter a water jacket for said precombustion chamber and said valve.

3. A Diesel type engine having, in combination, a cylinder, a member formed to provide a pro-combustion chamber h'avin inlet and outlet openings, said member ormed separately from said cylinder and detachably supported on the head of the latter with said outlet opening in communication with said cylinder, a spray-valve in registry with said inlet opening, a removable wall member surroundin said spray-valve in spaced relation to said first mentionel member and forming with the latter a water jacket for said recombustion chamber and said valve, an securin means engagin said wall member and cylin er for detacha ly securing said Well member and re-combustion chamber in assembled relation with each other and said cylinder.

4. A Diesel t engine having, in combination, a cylin er, a member formed to provide a pro-combustion chamber having aninlet opening in its upper wall and an outlet opening in its lower well, said member formed separtel from said cylinder and supported.

on the ead of the latter with said outlet opening in communication with said cylinder, a detachable wall member above the upper wall of said first mentioned member in spaced relation thereto so as to provide a water jacket, said wall member having an opening in alignment with said inlet opening, a sprayvalve extending through said openln in said wall member into registry with said inlet opening, a spray-valve supporting member carried by the upper wall 0 said first mentioned member, said supporting member cooperating with said wall member to seal said opening of the latter a ainst leakag: and to permit removal of sai wall mem r without removal of said spray-valve.

5. A Diesel t pe engine having, in combination, a cylin er, a member formed to provide a pre-combustion chamber havin inlet and outlet openin said member ormed separatel from sai c linder and detachably supporte on the head of the latter with its lateral walls exposed with respect to said head, said outlet openi being in communication with said cylin er, a spray-valve in re ry with said inlet opening, a removable we 1 member surrounding said spray-valve in spaced relation to said first mentioned memher and forming with the latter a water jaclket for said pre-combustionchamber and vs vs, tion surrounding said lateral walls of said valve supportin member carried said wall member having a skirt p0rpre-combustion chamber in spaced relation thereto.

6. A Diesel t pe engine having, in combination, a cylin er, a member formed to pro- 'valve, said wall member havinga skirt portion surrounding said lateral walls of said pre-combustion chamber in spaced relation thereto, and securing means engagm said wall members and cylinder for detac ably securing said wall member and pre-combustion chamber in assembled relation with each other and said cylinder.

7. A Diesel t pe engine having, in combination, a cylin er, a member formed to provide a pre-combustion chamber having an in-' let opening in its upper wall and an outlet opening in its lower wall, said member formed separately from said cylinder and supported on the head of the latter with its lateral walls exposed with res to said head, said outlet opening being in communication with said cylinder, a detachable wall member above the upper wall of said first mentioned member in spaced relation thereto so as to form a water jacket, said Well member having an opening-in alignment with said inlet opening, a spray-valve extending through said openin in said wall member into registry with sai inlet opening, a sprayy the upper wall of said rst mentioned member, said suppbrtin member cooperating with said wall member to seal said opening of the latter against leakage and to permit removal of said wall member without removal of said spray-valve, said Well member having a skirt portion surrounding said lateral walls of said first mentioned member in spaced relation thereto. 4

8. A Diesel t pe engine having, in combination, a cylin er, a member formed to provide a pre-combustion chamber having an inlet opening in its upper wall and an outlet opening in its lower wall, said member formed separately from said cylinder and supported on the head of the latter with its lateral walls exposed with respect to said head, said outlet opening being in communication with said cylinder, a detachable wall member above the upper wall of said first mentioned member in spaced relation thereto so as to form a water jacket, said well member having an opening in alignment with into registry with sai a spray-valve extending 1n said wall member inlet opening, a sprayvalve supporting member carried by the u per wall of said first mentioned member, said supporting member cooperating with said wall member to seal said opening of the latter against leakage and'to permit removal of said wall member without removal of said sprayvalve, said wall member having a skirt portion surrounding said lateral walls of said first mentioned member in spaced relation thereto, and securing means enga ing said wall member and cylinder for detac ably securing said wall member and pre-combustion chamber in assembled relation with each other and said cylinder.

In testimony whereof I have signed my name to this specification.

DR. FRITZ MODERSOHN.

said inlet opening, through said opening said inlet opening, a spray-valve extending through said opening 1n said wall member into registry with said inlet opening, a sprayvalve supporting member carried by the u per wall of said first mentioned member, said supporting member cooperating with said wall member to seal said opening of the latter against leakage and to permit removal of said wall member Without removal of said sprayvalve, said wall member having a skirt portion surrounding said lateral walls of said first mentioned member in spaced relation thereto, and securing means engaging said wall member and cylinder for detachably securing said wall member and pie-combustion chamber in assembled relatlon with each other and said cylinder.

In testimony whereof I have signed my name to this specification.

DR. FRITZ MODERSOHN.

CERTIFICATE OF CORRECTION.

Patent No. 1,845,620. Granted February 16, 1932, to

FRITZ MODERSOHN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 75, claim 6, after the syllable "communi" insert the syllable and words cation with said cylinder, a spray-valve in registry with said inlet opening, a removable, and same claim, lines 77 and 78, strike out the words "registry with said inlet opening, a removable wall member surrounding said spray-valve in", and line 86, for "members" read member; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 29th day of March, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,845,620. Granted February 16, 1932, to

I FRITZ MODERSOHN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 75, claim 6, after the syllable "communi" insert the syllable and words cation with said cylinder, a spray-valve in registry with said inlet opening, a removable, and same claim, lines 77 and 78, strike out the words "registry with said inlet opening, a removable wall member surrounding said spray-valve in", and line 86, for "members" read member; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 29th day of March, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents.

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