US1027649A - Gas-engine-starting device. - Google Patents

Description

W. A. HANSEN. GAS ENGINE STARTING DEVICE. uruouzon FILED no. 13, 1910.

1,027,649. Patented May 28, 1912.

2 SHEETS-SHEET 1.

a mu O 4 I W. A. HANSEN.

GAS ENGINE STARTING DEVICE. urmoumir FILED ps0. 13, 1910.

Patented May 28,1912.

2 sums-sum 2.

WTLLIAM A. HANSEN, OF SAN FBANCISCQ GALIFOBNIA.

Specification of Letters Patent.

GAS-ENGINE-STARTING DEVICE.

' Patented May 28,1912.

Application filed December 13, 1910. Serial No. 597,025.

T 0 all whom; it may concern:

Be it known that I, \VILLIAM A. HANSEN, citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Gas-Engine-Starting Devices, of which the following is a specification.

My invention relates to a device for readily starting gas or internal combustion engin'es, and for automatically changing the proportion of air and gas under varying conditions of starting.

It consists in: a combination of parts and details of construction as will be more fully described and claimed by reference to the accompanying drawings, in which- Figure 1 is a vertical section of the upper portion of an engine cylinder with valves and other appurtenances. Fig. 2 is an exterior view of a portion of the engine showing the starting device. Fig. 3 is an en larged section of the auxiliary vaporizer. Fig. 4 is a view of the charging, scavenging and releasing valve. Fig.6 is a partial sectional view of the thermostat. Fig. (3 is a plan view of the same. Y I

It is the objectof my invention to provide a means for starting an internal combustion engine from a stationary condition; to provide a suitably rich mixture for starting the engine under varying temperature which may be present, and after starting, to antomatically increase the proportionate air supply.

A is a carbureter which may be of any suitable or well known description. withthe usual float a. and needle valve, to maintain the desired gasolene level, and 2 is a small auxiliary vaporizer or carbureter which is employed in starting, and which may be conveniently attached to the main carbureter and receive gasolene therefrom through a supply pipe 3, which may be connected with the float chamber of the carbureter A. By thus connecting these parts, the single float and float chamber serve to maintain the desired level of gasolene in both carburetors.

The flow of gasolene through this part of the apparatus is effected when the engine is -to be started by admitting air from a tank,

The force of the air jet passing through the nozzle 5 acts like an injector to draw the gasolene through the pipe 3, through the passages exposed by the needle valve 7 and thence through the transverse connecting passage 8 by reason of the suction caused bythe air jet before described. This in sures a rich mixture of gasolene and air,

such as will be readily ignited by the igni- 5 tion means supplied to the engine. This mixture is supplied directly to the engine cylinders through the pipe ('3; and the inanifold 9; thence bv distributing pipes 10 to valves 11 through which the mixture may 14, by which they may be moved simultaneously and the cocks all opened or closed. The plugs have two openings with corresponding inlet passage 18 and outlet passage 19, which allow for the circulation of the charge into and through the cylinders. 0

This device also serves as a pressure relief to hllow the eng ne to be turned over easily when opened. When the engine is thus charged, the valves are closed and the charge being ignited the engine will best-arted, 5

after which the operation is continued in the usual manner by the charge drawn through the main carbureter A. When the engine is cold it is necessary that the starting mixture should be quite rich in order to start the engine. with the least diflicnlty, but if the en gine has been running and it is desired to start it when heated, it will be necessary to reduce the richness of the mixture by admitting a greater proportion of air. Thisra is effected by means of a thermostat controlled valve 15. which controls an auxiliary supply of air of the starting device.

The thermostat 16 may be of any suitable or usual construction. consists of two plates of metal, having different degrees of expansibility; these plates," being secured together and fixed at one end, the other end carrying the valve lii which controls the auxiliary air opening 17. pipe from this opening is shown at 9. and leads to the auxiliary vaporizer into which it opens, as shown at 9* in Fig. When the engine is to be started under these conditions, the auxiliary air which is supplied. is 110 controlled by the valve15. lVhen the engine is cold little or no air is drawn through As here shown, it

The

this valve 15, but when the engine is warm the necessary air for making combustible starting mixture with the gasolene will be supplied through the valve 15, which, as the engine becomes heated, will be more fully opened, and thus supply the requisite pro portion of air.

As soon as the engine becomes heated, the heat passing through the exhaust manifold will be communicated to the thermostat 16, which is fixed to said manifold, and the operation of the thermostat will be to open the valve 15 to a greater degree, thus allowing a greater portion of auxiliary air to enter and greatly reducing the richness of the mixture.

The pipe 6 has a small opening at its lowest point 6* so that any gasolene which might otherwise accumulat in this pipe may escape.

Having thus described my invention, what I claim and desire to secure by Letters-Patent, is-- 1. In a starting device for gas engines, the combination of an auxiliary vaporizer, means to supplyvair thereto under pressure to start the engine, and a thermostat acted upon by the varying heat of the engine, for automatically varying the air supply in proportion to the supply of gasolene.

2. In a starting device for gas engines, an auxiliary vaporizer, means to supply air thereto under pressure to start the engine, and a means to automatically increase ,the air supply, said means including a thermostat and an auxiliary air inlet controlled thereby,

3. A starting appliance for gas engines, said appliance including an auxiliary vaporizer with a gasolene supply, an air pres sure injector to deliver a mixture to the engine, an auxiliary air inlet connecting with the vaplorizer, and a thermostat-actuated valve by which the auxiliary air is regulated. 1

4. In a starting device for gas engines, an auxiliary vaporizer, a supply of air'thereto under pressure, and a means to automaticall regulate the mixture for a cold or hot engine, said means including a thermostatactuated valve which closes or 0 us the auxiliary air passage to the vaporizer, said valve being operated by the varying heat of the engine.

5. In a start-ing device for gas engines, an auxiliary ,va-porizer'with an -air nozzle, a transverse passage connecting with the gasolene and auxiliary air supply, and a discharge passage leading to the engine cylinder, and a means connected with the mixture from the vaporizer 'to the engine cylinders.

7. The combination with an internal combustion engine, and cocks having a plurality of passages, of a vaporizer using a thermostat acted upon by the varying heat of the engine to regulate the mixture for a cold orhot engine.

8. The combination with an internal com bustion engine, an auxiliary va-porizer,-

cocks having a (plurality of passages, and a thermostat acte upon by the varying heat of the engine to regulate the mixture for starting the engine,

9. The combination with an internal combust-ion engine, an auxiliary vaporizer, and cocks having a plurality of passages, of a thermostat acted upon by the varying heat of the engine to regulate and form a combustible mixture to start the engine,

said thermostat carrying a valve which opens 0r closes the auxiliary air opening to the vaporizer.

10. In a starting device for gas engines,

.a vaporizer having a means for regulating and forming an explosive mixture, said means including a thermostat acted upon by the varying heat of the engine, said thermostat carrying a valve, and an auxiliary air inlet controlled thereby, an air nozzle, a needle valve, a passage connecting with the gasolene and the auxiliary air opening, and a passage in line with the air nozzle.

11. A starting appliance for gas engines, said appliance including an auxiliary vaorizer with a gosolene supply, an air inector to deliver a gaseous mixture to the engine, an auxiliary air inlet connecting with the vaporizer, means for controlling the flow of air to the auxiliary inlet, and a valve controlling the gasolene supply. In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

FGHARLrs EDELM'AN.

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