US1712939A - Combined air cleaner, oil filler, and crank-case breather - Google Patents

Description

May 14, 1929. c. R. SHORT COMBINED AIR CLEANER, OIL FILLER, AND GRANK 'CASE BREATHER Filed April l. 1926 ma@ 5w Patented May 14, 1929.

UNITED STATES PATENT. OFFICE.

- CHARLES E. SHORT, OF DAYTON', OHIO, .ASSIGN'OB' TO GENERAL MOTORS RESEARCH CORPORATION, OF DETROIT, MICHIGAN, A. CORPORATION F DELAWARE.

AIB CLEANER, OIL FILI-ER, AND CRANE-CASE BREATBIER.

Application led April 16, 1928.. lSerial Ho. 102,526.

it invention combines an air cleaner, an oi1 ller, and a crank case breather.

It is an object of the invention to associate an air cleaner with an air heater in such a way that cold air or warm air may be admitted to the air cleaner at the will of the o erator.

he a ipurther object the invention aims to ad'ord a ready means ofy escape for the gases lo in the erank case tp the carbureter.

"llhe invention also has for an object to provide an oil filler delivering oil through v the breather tube to the crank case, although the breather tube also serves as a conduit for l5 cranlr case gases passing to the intake of the motor.

.d turther object is to combine these severall instrumentalities in a simple structure which shall be etcient in serving its purpose and also economical in manufacture.

'1he invention will be understood from the oliowing specification and the accompanying drawing.

1n the drawings,-Fig..1 is a side view of an,l explosive motor provided with the ae-` cessories comprising the invention; y

Fig.` 2 is an end view of the motor;

Fig. 3 is a side view, parts broken away and'parts in section; v k

Fig. 4 is a vertical section on line 4-4 of Fig. 3.

Referring to the drawing, numeral 1 represents, in a conventional way, a gas engine its crank case beingrepresented by numera yj 2. The intake manifold is shown at 3, the

exhaust manifold at 4, and 5 is the carbureter, the latter communicating with the intalte manifold. A pipe 6 connects the car bnreter with an air cleaner designated as a wholle by numeral 7.'

The air cleaner in its intermediate portion is of generally circular shape. It has a head 8 in the form o f a casting having a reduced end for a connection with pipe 6 as provided with an internal tubular extension within the outer wall of the cleaner las shown at 9. At the lower part of the cleaner a circular opening as at 10 is provided for the entrance of air into the cleaner, and extending across and beyond this opening. is a curved plate 11:J This structure c'auses the air enterin the cleaner to. travel tangentially and to germ a whirl moving along the circular wall of the air cleaner.

y clearly shown in Fig. 3. The head 8 is also The particles of dust coming in with the air are separated from the air and collected 1n the dust trap 12 at the end of the cleaner .opposite the head 8. The air thus `freed from dust leaves the cleaner through the opening 9 in head 8, and passes to the earbureter by way of the pipe 6.

In supplying airl to the air cleaner, an arrangement is made whereby the air may be taken from the atmosphere or the air may be iirst warmed by being taken from position in proximity to the exhaust manifold. To that end a pipe, stove or heater 13 is shown connected to the exhaust manii 'fold by fastening means 14e.

This pipe is extended to a point Just back of the air cleaner as perhaps best shown in Fig. 3,

where the air cleaner is broken away to show V the end of the heater pipe behind it. Near its open end, adjacent the cleaner, it is provided Jvith an opening 14 in its lower wall communicating with an elbow at the inlet of the air cleaner. Within the said end of pipe 13 and above the opening 14 is a valve member 15 carried on a pivot 16, there beingan operating arm 16 for said valve at the end of the pivot 16. As seen in Fig. 3, the valve in one position permitscold air from the adjacent open end of pipe 13 to enter the air cleaner. When the valve is turned to its opposite or dotted line position, as shown in Fig. 3, the cold air opening is closed and the cleaner receives warm air from. the stove or pipe 13, i. e., from the part of pipe 13 situated in the vicinity of the exhaust manifold. It is possible to clean either the cold air or warm air with this arrangement of-cleaner and heater.

A breather pipe 17 extends upwardly from the crank case. It is Well known that in the heated condition of a gas engine much volatile gas is wastedthrough this breather pipe. By the structure now to be described this waste is prevented. The head 8 of the air cleaner in addition to being axially bored for engagement with pipe 6 is also transversely bored to snugl receive the end of the breather pipe 17. ghe upper end of this last named ,opening receives an oil -iiller pipe 18 which is reduced in diameter as shown at 19 within'the casting 8 andis extended toenter the upper end of the breather pipe 17. This `second opening in the casting 8, into the ends of which the breather and filler pipe are admitted, intersects the axial opening in part 8 so that an air passage is afforded into pipe 6 from the breather pipe 17 by way of the annular space around the reduced end of the oil filler Vpipe 18.

"With the structure as above described, it

-will be seen that a continuous passage is made use of from the heater to the carbureter. In the several portions of this passage air is heated, cleaned from sediment and mixed with crank ease gases. 'Also at that portion of the passage where the crank case gases are admitted, provision is made for the introduction of oil to the crank case by way of the breather pipe, without danger of oil being admitted to the passage from the breather to the carbureter air intake.

The structure will be seen to be very simple, requiring little more than a few pipe elements and a special air cleaner cover, which latter is provided with two intersecting passageways. The construction, simple as it is, nevertheless performs its several functions very eiiiciently.

What I claim is:

1. In an explosive motor, the combination of an intake conduit, an air cleaner associated therewith, a breather pipe affording .communication between the motor casing and the intake conduit, an oil filler tube in axial alignment with the breather conduit, the filler tube being of smaller diameter than the breather pipe and extending into the breather pipe beyond its point of communication with the intake conduit.

2. An air cleaner for an explosive motor including a head for one end of the cleaner,

the head having an axial passage for attachment to an air inlet for the motor, a second passage in the head at an angle to the irstpassage, said passages intersecting each other, a breather connecting the motor casing to the second passage-way.

8. In an vair cleaner, breather and oil filler combination, an air cleaner, a head for one end of the cleaner, the head having an axial passage alfording an outlet communication from the air cleaner to the motor intake, the head also having a transverse passage intersecting the axial passage, a crank case breather connected to one end of the transverse passage, and an oil filler pipe connected to the other end of the transverse passage.

4. A combination as set forth in claim 3 wherein the oil filler pipe is of smaller diameter than the breather pipe, and extends into the breather pipe, thereby permitting the introduction of oil from the oil liller -opipe through the breather pipe and into the crank case, and also the passage of crank ease gases from the crank case, throughthe breather, around the extended end of the oil filler pipe and intothe motor intake P1Pe 5. In combination, a heater, an air cleaner,

means admitting cold air or air from the heater to the air cleaner, a tube connecting the outlet of the cleaner with a gas engine, a breather connecting the crank case with the cleaner outlet, and an oil filler positioned so as to pass oil into the crank case by way of the breather without entering the passage affording communication between the breather and the motor intake.

6. In a gas engine, a carburetor, a continuous air conduit leading into the carburetor comprising a portion for heating the air, a portion for cleaning the air, a portion wherein volatile gases from the crankcase are mixed with the air, and means associated with the portion wherein the volatile gases are admitted to the conduit to provide for the introduction of oil to the crankcase.

7 In an internal combustion engine having 4a conduit for the exhaust gases, an openended air heater associated with and extending longitudinally of and at one end beyond the exhaust conduit, an air cleaner, means for conducting air from adjacent the extended end of the conduit to the air intake of the air cleaner, a valve in the air heater whereby either end of the conduit may be opened to said means.

8. In an internal combustion engine having an exhaust manifold, means to conducteither hot or cold air to the carburetor including a conduit extending longitudinally of and secured to the manifold and extending at one end beyond the manifold, means for conducting air from adjacent the cxtended end of the conduit and a valve in the conduit whereby either end of the conduit may be opened to said means.

9. In an inter'nal combustion engine having an exhaust manifold, means to conduct either hot or cold air to the carburetor including a conduit extending longitudinally of and secured to the manifold and extending at one end be 7ond`the manifold, means for conducting a1r from adjacent the extended end of the conduit and a valve in the conduit whereby the air leaving the conduit can be taken from either end of the conduit or from both ends in any desired proportion.

10. In combination, an `intake conduit and a breather pipe, said breather pipe having CHARLES R. SHORT. l

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