US1883637A - Piston for internal combustion engines - Google Patents
Piston for internal combustion engines Download PDFInfo
- Publication number
- US1883637A US1883637A US495957A US49595730A US1883637A US 1883637 A US1883637 A US 1883637A US 495957 A US495957 A US 495957A US 49595730 A US49595730 A US 49595730A US 1883637 A US1883637 A US 1883637A
- Authority
- US
- United States
- Prior art keywords
- piston
- grooves
- internal combustion
- combustion engines
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title description 5
- 210000000707 wrist Anatomy 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/08—Constructional features providing for lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
Definitions
- This invention relates to improvements in for use in internal combustion engines, and has for its objectthe provision of an engine piston which will assist in maintaining the associated cylinder walls properly lubricated under all working conditions.
- Figure 1 is an elevational view of one form of piston to which the present invention has been applied.
- Figure 2 is a section on the l'ne 22 of Fig. 1.
- the piston selected for illustrating the invention and indicated by the reference numeral 10 is of the type Whch is provided with a plurality of grooves 12 for the retention of the compression rings and a groove 13 adapted to receive an oil ring, but it will be understood that the invention is equally applicable to other types of pistons.
- the piston 10 is provided with the usual shallow grooves 16 are formed in the outer Wall of the piston and preferably in the skirt portion inter mediate the oil ring and the compression rings. In the present embodiment of. the invention, four of these grooves are shown,
- each groove is preferably inclined with respect to the axis of the cylinder, as shown in Figure 1 of the drawing, and each such groove communicates at its upper end with an aperture 19 extending through the piston wall'so that communication is, established between the rooves '16, and the interior of the piston. It will be noted that while the pair of grooves 16 on one side of the piston are inclined toward each other, there is no communication between these grooves at their lower ends and accordingly no weakening of the piston results.
- This feature is particularly important in the construction of a lightweight high speed piston in which the walls are made as thin as possible and in which the provision of intersecting grooves might seriously weaken the skirt portion and result in breakage of the piston and consequent damage to the motor while in operation. Furthermore, this spacing of the adjacent grooves at their lower ends prevents flooding of the cylinder and piston surfaces With oil at this point.
- grooves 16 lie entirely within the confines of the outer surface of the piston, or in other Words, the
- grooves are so arranged as to communicate with the exposed portions of the cylinder and with the piston interior only through the apertures 19. If these grooves extended to the lower edge of the piston skirt, for instance, the oil film would not be retained on the piston surface but the opposite efiect from that desired would be produced, name- 1y, oil on the piston surface would pass into the grooves and be returned tothe cylinder below the piston.
- a piston havin spaced apertures extendlng ton wall and having grooves ton surface, each such groove communicating with one of said apertures only, the adjacent grooves being inclined with respect to the longitudinal axis of the piston and extending from the associated apertures toward the lower end of the piston and toward each other and being spaced apart throughout their length.
- a piston provided with wrist pin bosses and having circumferentially spaced apertures extending through the wall thereof, said circumferentially through the pispiston being provided with grooves in the outer surface thereof, each groove communicating with an aperture and extending from said aperture away from the head end of the piston and convergent to said grooves and apertures being located on opposite sides of the piston intermediate the wrist pin bosses and lying entirely within the confines of the cylindrical surface of the pis- In testimony whereof ll hereunto afix my signature.
Description
Oct. 18, 1932. H. c. EDWARDS PISTON FOR INTERNAL COMBUSTION ENGINES Filed NOV. 15. 1950 I pistons intended Patented Oct. 18, 1932 H ERBERT C. EDWARDS, OF DETROIT, MICHIGAN, ASSIGNOB OF DETROIT, MICHIGAN,
COMPANY,
'ro PACKARD Mo'ron can A CORPORATION OF MICHIGAN PISTON FOR INTERNAL COMBUSTION ENGINES Application filed November 15, 1930. Serial No. 495,957.
This invention relates to improvements in for use in internal combustion engines, and has for its objectthe provision of an engine piston which will assist in maintaining the associated cylinder walls properly lubricated under all working conditions.
Considerable difiiculty has been experienced in connection with the operation of g high speed internal combustion engines, particularly engines developing high tempera; ture such as the Diesel type, by reason of insilflicient lubrication of the cylinder walls and consequent scoring of the cylinder the sticking or seizing of the piston. It is proposed by means of the present invention to dilliiculties by so designing the piston that a film of oil is maintained between the piston and the cylinder regardless of the heat developed while the motor is operated, and particularly between those surfaces of the piston and cylinder which are subjected to the greatest wear by reason of the side thrust exerted by the connecting rod and expansion caused by heat.
In .the accompanying drawing one overcome these form of the invention is illustrated by way of example.
Figure 1 is an elevational view of one form of piston to which the present invention has been applied; and
Figure 2 is a section on the l'ne 22 of Fig. 1.
Referring drawing, it will be observed that the piston selected for illustrating the invention and indicated by the reference numeral 10, is of the type Whch is provided with a plurality of grooves 12 for the retention of the compression rings and a groove 13 adapted to receive an oil ring, but it will be understood that the invention is equally applicable to other types of pistons.
The piston 10 is provided with the usual shallow grooves 16 are formed in the outer Wall of the piston and preferably in the skirt portion inter mediate the oil ring and the compression rings. In the present embodiment of. the invention, four of these grooves are shown,
now more specifically to the.
two being located on each side of the piston intermediate the wrist pin bosses. These grooves are preferably inclined with respect to the axis of the cylinder, as shown in Figure 1 of the drawing, and each such groove communicates at its upper end with an aperture 19 extending through the piston wall'so that communication is, established between the rooves '16, and the interior of the piston. It will be noted that while the pair of grooves 16 on one side of the piston are inclined toward each other, there is no communication between these grooves at their lower ends and accordingly no weakening of the piston results. This feature is particularly important in the construction of a lightweight high speed piston in which the walls are made as thin as possible and in which the provision of intersecting grooves might seriously weaken the skirt portion and result in breakage of the piston and consequent damage to the motor while in operation. Furthermore, this spacing of the adjacent grooves at their lower ends prevents flooding of the cylinder and piston surfaces With oil at this point.
In practice it is found unnecessary to provide lubricating grooves at other points on the circumference of the piston, cally the entire wear on the piston walls occurs at points remote from the wrist pin bosses and seizure oflthe piston and scoring herein, oil will be gathered in the grooves 16 from the cylinder. wall upon inward movement of the piston and such collected oil is spread axiallyalong the cylinder wall upon outward movement. The excess collected oil will flow from the grooves through the openings 19 into the interior of the piston. This arrangement for collectlng 011 insures that the cylinder wallsurface adjacent the since 'practigrooves during the piston movement will be uniformly and regularly lubricated.
It will be observed that the grooves 16 lie entirely within the confines of the outer surface of the piston, or in other Words, the
grooves are so arranged as to communicate with the exposed portions of the cylinder and with the piston interior only through the apertures 19. If these grooves extended to the lower edge of the piston skirt, for instance, the oil film would not be retained on the piston surface but the opposite efiect from that desired would be produced, name- 1y, oil on the piston surface would pass into the grooves and be returned tothe cylinder below the piston.
It will be understood that the foregoing detailed description is intended primarily to illustrate the principles of the invention and that such further modifications of the piston disclosed herein are contemplated as fall within the spirit and scope of the appended claims.
Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:
1. A piston havin spaced apertures extendlng ton wall and having grooves ton surface, each such groove communicating with one of said apertures only, the adjacent grooves being inclined with respect to the longitudinal axis of the piston and extending from the associated apertures toward the lower end of the piston and toward each other and being spaced apart throughout their length.
2. A piston provided with wrist pin bosses and having circumferentially spaced apertures extending through the wall thereof, said circumferentially through the pispiston being provided with grooves in the outer surface thereof, each groove communicating with an aperture and extending from said aperture away from the head end of the piston and convergent to said grooves and apertures being located on opposite sides of the piston intermediate the wrist pin bosses and lying entirely within the confines of the cylindrical surface of the pis- In testimony whereof ll hereunto afix my signature.
WRBERT C. EDWARDS.
essee? in the outer pis an adjacent groove,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495957A US1883637A (en) | 1930-11-15 | 1930-11-15 | Piston for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495957A US1883637A (en) | 1930-11-15 | 1930-11-15 | Piston for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1883637A true US1883637A (en) | 1932-10-18 |
Family
ID=23970651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US495957A Expired - Lifetime US1883637A (en) | 1930-11-15 | 1930-11-15 | Piston for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
US (1) | US1883637A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153987A (en) * | 1960-06-29 | 1964-10-27 | Thoma Hans | Piston type hydrostatic power units |
US4195600A (en) * | 1976-04-15 | 1980-04-01 | Yamaha Hatsudoki Kabushiki Kaisha | Crankcase chamber compression type two cycle internal combustion engines |
USD377493S (en) * | 1995-05-16 | 1997-01-21 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Piston |
USD737861S1 (en) * | 2009-10-30 | 2015-09-01 | Caterpillar Inc. | Engine piston |
USD886155S1 (en) * | 2015-12-18 | 2020-06-02 | Mahle International Gmbh | Piston for an internal combustion engine |
-
1930
- 1930-11-15 US US495957A patent/US1883637A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153987A (en) * | 1960-06-29 | 1964-10-27 | Thoma Hans | Piston type hydrostatic power units |
US4195600A (en) * | 1976-04-15 | 1980-04-01 | Yamaha Hatsudoki Kabushiki Kaisha | Crankcase chamber compression type two cycle internal combustion engines |
USD377493S (en) * | 1995-05-16 | 1997-01-21 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Piston |
USD737861S1 (en) * | 2009-10-30 | 2015-09-01 | Caterpillar Inc. | Engine piston |
USD886155S1 (en) * | 2015-12-18 | 2020-06-02 | Mahle International Gmbh | Piston for an internal combustion engine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1883637A (en) | Piston for internal combustion engines | |
US1796603A (en) | Engine | |
US2130923A (en) | Piston land construction | |
US1636027A (en) | Piston ring | |
US1368447A (en) | Wiper-ring for the cylinders of internal-combustion engines | |
US2226921A (en) | Piston ring | |
US2661253A (en) | Connecting rod end bearing assembly | |
US1468621A (en) | Engine piston | |
US2718443A (en) | Engine piston | |
US2635932A (en) | Piston ring assembly for the pistons of internal-combustion engines | |
USRE17193E (en) | Piston | |
US1687878A (en) | Internal-combustion engine | |
US2829017A (en) | Piston | |
US1856271A (en) | Piston ring | |
US2017348A (en) | Internal combustion engine piston | |
US1737302A (en) | Notched-face piston ring | |
US1263897A (en) | Piston-ring for internal-combustion engines. | |
US1976794A (en) | Piston and piston ring | |
US1736001A (en) | Piston | |
US2136162A (en) | Internal combustion engine | |
US1713231A (en) | Piston | |
US1772104A (en) | Engine piston | |
US1510760A (en) | Piston for fluid-pressure engines | |
US1813791A (en) | Piston ring | |
US1695417A (en) | Piston |