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US 4,381,745 AGranted
Porous burner diesel engine
OwnerJoseph C. Fireyinventor
Life of this patent
Estimating the term…
Abstract
In the engines of this invention the fuel is spread out over the interior pore area of a porous burner volume and the large area of contact with air needed for rapid burning is obtained in this way. The fuel may burn in three ways: partial burning of evaporated fuel in the pore spaces; partial burning of solid carbon fuel deposits in the pore spaces; complete burning of the partial oxidation products outside the pore spaces during expansion. Several engine cycles can be used to burn up any solid carbon deposits formed from the fuel so these engines can efficiently utilize high viscosity residual fuels and slurries of solid char fuels in oil even at very small piston diameters.
Claims13
A porous burner diesel engine comprising:
- an internal combustion engine mechanism comprising cylinders, pistons operative within said cylinders, piston crowns on the compressing side of said pistons, and a combustion chamber space in each such cylinder fully enclosed by said piston crowns and a portion of the walls of said cylinder when said piston crowns and cylinder enclose the smallest such space during the engine compression process;
- at least one porous burner volume in each of said cylinders, said burner volume being made from a porous, solid, high-temperature material, said porous burner volume being secured within said combustion chamber space and occupying a fractional portion thereof, said fractional portion being less than one and greater than zero;
- means for spreading poured liquid fuel over interior surface areas of said porous burner volume so that, poured fuel is forced inside said porous burner volume during compression processes, gas or liquid can flow only into said porous burner volume during compression processes and can flow only out of said porous burner volume during expansion processes and cannot flow entirely through said porous burner volume, whereby unburned solid portions of said poured fuels are retained within said porous burner volume between engine cycles, said means for spreading comprising:
- said porous burner volume comprising an external surface area consisting of two portions, a sealed area largely sealed to prevent gas or liquid flow therethrough during the engine compression and expansion processes, and an unsealed, poured upon area, through which gas or liquid flow can occur during the engine compression and expansion processes, all of said poured upon area for each burner volume being in contact with a single, undivided portion of said combustion chamber space;
- means for pouring a volume of said liquid fuel upon a portion of said poured upon area, said pouring commencing after the commencement of the engine intake process for each engine cycle, said pouring being stopped prior to the end of the engine compression process for that same engine cycle;
- means for controlling the quantity of liquid fuel poured upon the external surface of said porous burner volume during each engine cycle.
3 more elements
A porous burner diesel engine comprising:
- an internal combustion engine mechanism comprising cylinders, pistons operative within said cylinders, piston crowns on the compressing side of said pistons, and a combustion chamber space in each such cylinder fully enclosed by said piston crowns and a portion of the walls of said cylinder when said piston crowns and cylinder enclose the smallest such space during the engine compression process;
- at least one porous burner volume in each of said cylinders, said burner volume being made from a porous, solid, high-temperature material, said porous burner volume being secured within said combustion chamber space and occupying a fractional portion thereof, said fractional portion being less than one and greater than zero;
- means for spreading poured liquid fuel over interior surface areas of said porous burner volume so that, poured fuel is forced inside said porous burner volume during compression processes, gas or liquid can flow only into said porous burner volume during compression processes and can flow only out of said porous burner volume during expansion processes and cannot flow entirely through said porous burner volume, whereby unburned solid portions of said poured fuels are retained within said porous burner volume, said means for spreading comprising:
- said porous burner volume comprising an external surface area consisting of two portions, a sealed area largely sealed to prevent gas or liquid flow therethrough during the engine compression and expansion processes, and an unsealed, poured upon area, through which gas or liquid flow can occur during the engine compression and expansion processes, all of said poured upon area for each burner volume being in contact with a single, undivided portion of said combustion chamber space;
- means for pouring a volume of liquid fuel upon a portion of said poured upon area, so that said portion of said poured upon area changes between engine cycles in order that unburned retained solid portions of said poured fuels are contacted with air for several engine cycles in order to complete their burning, said pouring commencing after the commencement of the engine intake process for each engine cycle, said pouring being stopped prior to the end of the engine compression process for that same engine cycle;
- means for controlling the quantity of liquid fuel poured upon the external surface of said porous burner volume during each engine cycle so that engine torque is controlled.
3 more elements
A porous burner diesel engine comprising:
- an internal combustion engine mechanism comprising cylinders, pistons operative within said cylinders, piston crowns on the compressing side of said pistons, and a combustion chamber space in each such cylinder fully enclosed by said piston crowns and a portion of the walls of said cylinder when said piston crowns and cylinder enclose the smallest such space during the engine compression process;
- at least one porous burner volume in each of said cylinders, said burner volume being made from a porous, solid, high-temperature material, said porous burner volume being secured within said combustion chamber space and occupying a fractional portion thereof, said fractional portion being less than one and greater than zero;
- means for spreading poured liquid fuel over interior surface areas of said porous burner volume so that, poured fuel is forced inside said porous burner volume during compression processes, gas or liquid can flow only into said porous burner volume during compression processes and can flow only out of said porous burner volume during expansion processes and cannot flow entirely through said porous burner volume, whereby unburned solid portions of said poured fuels are retained within said porous burner volume, said means for spreading comprising:
- said porous burner volume comprising an external surface area consisting of two portions, a sealed area largely sealed to prevent gas or liquid flow therethrough during the engine compression and expansion processes, and an unsealed, poured upon area, through which gas or liquid flow can occur during the engine compression and expansion processes, all of said poured upon area for each burner volume being in contact with a single, undivided portion of said combustion chamber space;
- means for pouring a volume of liquid fuel upon a portion of said poured upon area, so that said portion of said poured upon area changes between engine cycles in order that unburned retained solid portions of said poured fuels are contacted with air for several engine cycles in order to complete their burning, said pouring commencing after the commencement of the engine intake process for each engine cycle, said pouring being stopped prior to the end of the engine compression process for that same engine cycle;
- means for controlling the quantity of liquid fuel poured upon the external surface of said porous burner volume during each engine cycle and means for controlling the quantity of air entering the engine cylinder during each engine intake process, so that engine torque is controlled.
3 more elements
Dependencies are inferred from the claim text.