US1467225A - Fuel heater for internal-combustion engines - Google Patents

Description

Sept. 4, 1923.

A. B. BROLUSKA ET AL FUEL HEATER FOR INTERNAL COMBUSTION ENGINES Filed March 8 Jim-23 Patented Sept. 4, 1923.

Ultra!) stares OFFICE.

MEL B. BROLUSKA AND HARRY A. BROLUSKA, 0F DETROIT, MICHIGAN, ASSIGNORS OF ONE-THIRD T0 CYRIL CAILLIAU, OF DETROIT, MICHIGAN.

FUEL HEATER FOR INTERNALCOMBUSTION ENGINES.

Application filed March 8,

To all whom it may concern: 1

Be it known that we, AMEL B. BROLUSKA and HARRY A. BROLUSKA, citizens of the United States, and residing at Detroit, county of lVayne, and State of Michigan, have invented a new and Improved Fuel Heater. for Internal-Combustion Engines, of which the following is a specification.

This invention relates to means for heating the fuel of internal combustion engines by means of exhaust ases, and its object is to provide a device 0 this character which shall be of maximum capacity and which may be automatically controlled.

This invention consists in combination with the exhaust andintake manifold of an internal combustion engine, of means for securing said manifolds to each other, the intake manifold being formed with a series of concentric passages and the wall between the intake manifold and the exhaust manifold bein formed with a series of ports so that one half these concentric passages may communicate with the exhaust manifold and receive hot exhaust gases therefrom, of a slidablevalve for opening and closing these ports, and a thermostat controlled by the temperature of the fuel passing through the intake manifold for operating said shdable valve. i

This invention further consists in providing an auxiliary carbureter for feeding unheated fuel to the intake manifold.

This inv ntion alsoconsists in the details of constru tion illustrated in the accom panying drawing and particularly pointed out in the claims.

In the drawing, Fig. 1 is a sigle elevation of an engine equipped with our improved fuel heating device. Fig. 2 is a section on the line 22 of Fig. 1. Figs. 3 and 4 are sections on the lines 3-3 and 4--4 of Fi 2.

Similar reference characters refer to dike parts throughout the several views.

The engine 1 shown conventionally inthe drawing is provided with-a cylinder block 2 and may be of any desired construction. As indicated in Fig. 4 it has four exhaust ports 3 and four intake orts 4..' The exhaust manifold 5 is secure to this engine in any desired manner, while the intake manifold is formed of two parts, an upper part 6 which is made integral with the exhaust manifold 5 and a detachable portion 7 which is secured to the body of the exhaust 1920. Serial No. 364,047.

manifold by means of bolts 8. This portion 7 constitutes the fuel heater and will be so termed. 4

This fuel heater is substantially semi-circular in cross section and comprises the passages 9 through which the fuel may flow to' the engine and other passages 10 for the exhaust gases. A carbureter 11 is connected to the lower end of this heater and may be of any desired construction, this invention having nothing to do with the carbureting of the fuel. Screens 12 and 13 may be placed above and below the heater-proper in order to break up such particles of liquid as may pass up.

The inner wall 14 of the heater 7 is formed with a series of small ports 15 preferably rectangular, and slidable adjacent to this wall is a valve plate 16 provided with similar apertures 17. Mounted in the exhaust pamge is a shaft 18 on which is secured a gear wheel 19 which meshes with rack teeth 20formed on this valve plate 16. The shaft 18 may be turned by means of a crank arm 22 and a link 23 extending down from a thermostat.

Mounted in the wall at the upper end of the intake passage 7 above the screen 12 is cured to this shaft 2a is a crank arm 26;

whose outer end connects to this link 23.

The several parts are normally in the pos tion shown in the drawing. As the engine begins to'run, exhaust gases will be discharged through the ports '3 into the 'exhaust passage 5 and a portion of them will pass into the passages 10 through the ports 15 and 17, heating the walls of the passages 9, which in turn will heat the fuel as it passes up throu h the passages 9 to the intake ports 4. on these passages 9 and the fuel beoome hotter than the desired temperature, the thermostat 25 will be affected thereby and turn the shaft 24 to move the. valve plate 16 to close the small ports 15 leading to the passages 10 of'the heater. The temperature to which the fuel may raised will, of course, depend u n the construction and position of the] t ermostat.

' In Fig. 1 we have shown a special fuel tank 30 and a carbureter 31 for supplying fuel of a different character to the top of the chamber I. A valve 33 between the carbureter 31 and the intake passage may be used to cut out this supply. The pipe 34: leading from the carburetor to the intake manifold is preferably formed with an enlargement 35 in which a screen 36 is mouut ed to break up the liquid particles, if any, which pass down through the pipe M. The fuel which passes to the intake manifold from the carbureter ill will preferably be cold. in this manner a richer or leaner mixture can be supplied to the engine by merely operating the valve 33.

It may be desired to heat the fuel passages 5) before the engine has had time to Warm up, and any desired means may be employed for this purpose. five prefer, however, to use a coil 37 of proper resistance Wire Which may be connected to any proper source of supply by means of the Wires 38 and 89. and this coil will be enclosed in a case at!) to prevent loss of heat. Any desired means for insulating the Wire may be employed.

The details and proportions of this fuel heater may all be changed by those skilled in the art Without departing from the spirit of our invention as set forth in the following claims.

\Ve claim 1. In an internal combustion engine, the combination of an exhaust manifold, an intake manifold and a fuel heater connected thereto, said heater comprising a plurality of fuel passages and a plurality of exhaust passages, all having a common Wall provided with openings to permit the flow of exhaust gases to a portion of said passages, and a valve slidable on said wall to control the flow of exhaust gases.

2. In an internal combustion engine, the combination of an exhaust manifold, an intake manifold, a fuel heater connecting to said manifolds, a carbureter connected to the fuel heater, said fuel heater comprising a series of parallel passages, a portion of said passages being for the fuel and a portion for the exhaust, one Wall of said heater being formed with ports connecting the exhaust manifold to alternate parallel passages, and means for opening and closing said ports.

3. In an internal combustion engine, the combination of an exhaust passage, an intake manifold, a fuel heater connected thereto and a carbureter connected to the fuel heater, said fuel heater comprising a series of semi-cylindrical passages. said heater being formed with ports opening into the exhaust passage and into alternate semieyliudrical passages, and means for opening and closing said ports comprising a slidable plate having apertures to register with said ports.

4. In an internal combustion engine, the combination of an exhaust passage, an intake manifold, a fuel heater connected thereto and a carbureter connected to the fuel heater, said fuel heater comprising a series of semi-cylindrical passages-said heater being formed with ports opening into the exhaust passage and into alternate semi-cylindrical passages, means for opening and closing said ports comprising a slidable plate having apertures to register with said ports, and means controlled by the temperature of the fuel as it leaves the heater for positioning said plate.

5. In an internal combustion engine, the combination of an exhaust passage, an in take manifold, a fuel heater connected thereto and a c-arbureter connected to the fuel heater, said fuel heater comprising a series of semi-cylindrical passages, said heater being formed with ports opening into the exhaust passage and into alternate semi-cylindrical passages, means for open ing and closing said ports comprising a slidable plate having apertures to register with said ports, and means controlled by the temperature of the fuel as it leaves the heater for positioning said plate and comprising a thermostat and means connecting it to said plate.

' AMEL B. BROLUSKA.

HARRY A. BROLUSKA.

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