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US Patent: 608,845
Internal Combustion Engine
Patentee:
Rudolf Diesel - Berlin, Prussia, Germany

USPTO Classifications:
123/23, 123/27R, 60/39.76

Tool Categories:
propulsion and energy : internal combustion engines : diesel engines

Assignees:
Diesel Motor Co. of America - New York, NY

Manufacturer:
Diesel Motor Co. of America - New York, NY

Witnesses:
William Haupt
Chr. Krüger
Charles W. Thomas
Eugenie A. Persidas

Patent Dates:
Applied: Jul. 15, 1895
Granted: Aug. 09, 1898

Patent Pictures:
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"Vintage Machinery" entry for Diesel Motor Co. of America
Description:
Patented in Spain, 03 Dec 1894, #16,654; in France, 10 Dec 1894, #243,531; in Belgium, 10 December 1894, #113,139; in Luxemburg, 10 December 1894, #2,192; in Italy, 21 Feb 1895, #LXXV, 132; in England, 27 Feb 1895, #4,243; in Switzerland, 05 Mar 1895, #10,134 & 10,135; in Germany, 30 Mar 1895, #86,633; in Hungary, 23 Nov 1895, #4,539 & 20 Mar 1897, #7,876; in Austria, 18 Jan 1895, #46/203 & 22 May 1896, #2,038 and in Denmark, 12 Feb 1896, #393.

Abstract:

My invention has reference to improvements in apparatus for regulating the fuel supply in slow-combustion motors, and in particular to internal-combustion engines adapted for carrying out the process described in my prior patent, No. 542,846, dated July 16, 1895, which process consists in first compressing air or a mixture of air and neutral gas or vapor to a degree producing a temperature above the igniting-point of the fuel to be consumed, then gradually introducing the fuel for combustion into the compressed air while expanding against resistance sufficiently to prevent an essential increase of temperature and pressure, then discontinuing the supply of fuel and further expanding without transfer of heat.

Claims:

1. In an internal-combustion engine, the combination of a cylinder and piston constructed and arranged to compress air to a degree producing a temperature above the igniting-point of the fuel, a supply for compressed air or gas; a fuel-supply; a distributing-valve for fuel, a passage from the air-supply to the cylinder in communication with the fuel-distributing valve, an inlet to the cylinder in communication with the air-supply and with the fuel-valve, and a cut-oil, substantially as described.

2. In an internal-combustion engine, the combination of a cylinder and piston constructed and arranged to compress air to a degree producing a temperature above the igniting-point of the fuel; a distributing-valve for fuel; a cutoff for varying the time and duration of the supply of fuel, and a burner placed in the combustion space and constructed for slow and perfect combustion of the gradually introduced stream of fuel, substantially as shown and described.

3. In an internal-combustion engine, the combination of a cylinder and piston constructed and arranged to compress air to a degree producing a temperature above the igniting-point of the fuel, a supply for compressed air or gas, a hopper, a distributing valve for pulverulent fuel, a passage from the air-supply to the cylinder in communication with the fuel-distributing valve, an inlet-valve to the cylinder in communication with the air-supply and with the valve for pulverulent fuel, and a cut-off for the fuel-supply, substantially as shown and described.

4. In an internal slow-combustion engine, the combination of a cylinder and piston constructed and arranged to compress air to a degree producing a temperature above .the igniting-point of the fuel, a supply for compressed air, a hopper and distributing-valve for pulverulent fuel, a supply-pipe for liquid- .fuel, a valve or valves leading to the cylinder and communicating with the pulverulent fuel-distributing valve and the liquid-fuel supply pipe, and a cut-off for the fuel-supply, substantially as specified.

5. In an internal-combustion engine, the combination of a supply for compressed air, a feed for pulverulent fuel placed in communication with the air-supply and with the cylinder, and an auxiliary feed for liquid fuel communicating with the cylinder, substantially as specified.

6. In an internal-combustion engine, the combination of a cylinder and piston, a supply for compressed air, a distributing-valve communicating with the air-supply and with a fuel-supply for gradually introducing a unitary, or mixed fuel, into the combustion space, a valve placed between the air-supply and the cylinder, and a reversing gear in cooperation with said valve for starting the motor with the compressed air from the air-supply during part of the working stroke, substantially as and for the purpose specified.

8. In an internal-combustion engine, the combination of a cylinder and piston constructed to compress air or a mixture of air and neutral gas storage-reservoir in communication with the combustion-space of the cylinder, a valve controlling this communication and opening to admit compressed air from the cylinder to the reservoir, and a fuel-feed in communication with said reservoir for the introduction of fuel to the combustion space under the pressure of the compressed air or gas in the reservoir, substantially as dc scribed.

9. In an internal-combustion engine, the combination of a cylinder and piston constructed and arranged to compress air to a degree producing a temperature above the igniting-point of the fuel, a distributing-valve for fuel, and a cut-off for varying the time and duration of the supply of fuel by said valve, substantially as described.

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