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US 3,960,121 AGranted
Engine combustion system
AssigneeBackus Devices, Incorporated
InventorHarold Adams Backus
Life of this patent
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AssigneeBackus Devices, Incorporated
InventorHarold Adams Backus
Estimating the term…
An engine combustion system is provided wherein fuel is supplied to the engine combustion chamber in the form of a hot vapor. The system preferably includes a preburner wherein a portion of a liquid fuel supply is burned internally to provide a hot, gaseous admixture of gasified fuel and products of combustion. A portion of the output of the preburner is used to heat air induced into the intake manifold, the heated air being thence supplied to the combustion chamber. The output of the preburner can also be used in auxiliary units such as a heating system for the passenger compartment. For a piston-type engine, the gaseous fuel is released into the combustion chamber formed by the clearance volume above the piston at the top center position of the piston, air being compressed within a recess in the cylinder during the cylinder head and rushing past the fuel inlet upon the downstroke of the piston to provide thorough mixing and, hence, complete burning of the gaseous fuel. The system described also includes temperature and pressure controls for both normal operation and startup as well as hydraulic controls for the fuel release valve assembly, the fuel release valve assembly including both an operator-controlled metering valve and an engine speed responsive poppet-type timing valve.
A combustion system for an engine comprising air pressurizer means for providing pressurized air, fuel pressurizer means for providing pressurized fuel, preburner means connected to said air pressurizer means and fuel pressurizer means for producing a hot gaseous admixture of fuel vapor and products of combustion which is heated to the temperature for autoignition of said gaseous admixture in air, means defining a combustion space within said engine, fuel release valve means connected to the output of preburner for controlling the release of the said hot gaseous admixture into said combustion space, and means for supplying preheated air to said combustion space to provide burning of said admixture in said preheated air, said preburner means comprising a mixing chamber, at least one fuel nozzle for injecting pressurized fuel into said chamber, at least one air nozzle for injecting a jet of pressurized air into said chamber at least a portion of which jet effects turbulent motion within said chamber so as to cause mixing of said fuel and said air, heating means for aiding in igniting the pressurized fuel, and sensing means responsive to the temperature within said chamber for controlling the output of said fuel nozzle.
Dependencies are inferred from the claim text.