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US 4,070,996 AGranted
Reciprocating internal combustion engine for the combustion of finely divided solid fuel
AssigneeSulzer Brothers Limited
InventorAnton Steiger
Life of this patent
Estimating the term…
Abstract
A powdered coal air suspension is charged from a rotating drum via a switch means into a vertical channel which is sealed off from a powdered coal collector in the valve piston by an axially hollow slider. Downward movement of the slider allows the powdered coal to charge into the valve piston while an air valve within the vertical channel opens when the valve piston opens to create an air blast for expelling the coal and air into the combustion chamber.
Claims24
In a reciprocating internal combustion engine having a combustion chamber for the combustion of finely divided solid fuel, the combination comprising
- means for forming a suspension of solid fuel particles and air,
- a valve piston for cyclically expelling solid fuel particles into said combustion chamber of the engine from a powdered coal collector disposed in said valve piston and adjacent said combustion chamber;
- a channel extending between said means and said collector along a straight vertical longitudinal axis to deliver the fuel/air suspension to said collector;
- a tube within a central and lower region of said channel to form said channel into an annular shape thereat;
- and
- an air valve disposed in said channel above said collector and coaxially within said tube for cyclically charging air into said collector to expel the fuel particles in said collector into said combustion chamber through said valve piston, said air valve having a seating surface sealingly seating on a lower end of said tube.
3 more elements
In a reciprocating internal combustion engine having a combustion chamber for the combustion of finely divided solid fuel, the combination comprising
- means for forming a suspension of solid fuel particles and air,
- a valve piston for cyclically expelling solid fuel particles into said combustion chamber of the engine from a powdered coal collector disposed in said valve piston and adjacent said combustion chamber, said collector forming a plurality of chambers located on a side of said valve piston opposite said combustion chamber;
- a channel extending between said means and said collector along a straight vertical longitudinal axis to deliver the fuel/air suspension to said collector;
- an air valve disposed in said channel above said collector for cyclically charging air into said collector to expel the fuel particles in said collector into said combustion chamber through said valve piston;
- a tube within a central and lower region of said channel to form said channel into an annular shape thereat;
- an axially movable hollow slider disposed about said lower region of said channel to move between an uppermost position and a lowermost position, said slider having a lower end for sealing said channel when in said uppermost position;
- a housing insert defining a second annular channel about said slider, said slider having a seat for sealing said second annular channel when in said uppermost position;
- and
- said valve piston including a tubular shaft axially mounted about the lower ends of said slider and said channels.
6 more elements
In a reciprocating internal combustion engine having a combustion chamber for the combustion of finely divided solid fuel, the combination comprising
- a valve piston for cyclically expelling solid fuel particles into said combustion chamber of the engine from a powdered coal collector disposed in said valve piston and adjacent said combustion chamber;
- a channel extending from said collector along a straight vertical longitudinal axis to deliver a fuel/air suspension to said collector;
- an air valve disposed in said channel above said collector for cyclically charging air into said collector to expel the fuel particles in said collector into said combustion chamber through said valve piston;
- and
- means for forming a suspension of solid fuel particles and air, said means including a hollow drum rotatably disposed about a horizontal axis above said channel and having a plurality of slots in the periphery thereof, a powdered coal reservoir located within said drum to dispense powdered coal into at least some of said slots, and an air supply means located in the area of the lowest point of said drum and having an air discharge channel communicating with said vertically disposed channel, said air supply means including a pair of ejector-like channels disposed symmetrically of said air discharge channel below said drum.
2 more elements
In a reciprocating internal combustion engine having a combustion chamber for the combustion of finely divided solid fuel, the combination comprising
- means for forming a suspension of solid fuel particles and air,
- a valve piston for cyclically expelling solid fuel particles into said combustion chamber of the engine from a powdered coal collector disposed in said valve piston and adjacent said combustion chamber;
- a channel extending between said means and said collector along a straight vertical longitudinal axis to deliver a fuel/air suspension to said collector;
- an air valve disposed in said channel above said collector for cyclically charging air into said collector to expel the fuel particles in said collector into said combustion chamber through said valve piston;
- an axially movable hollow slider disposed about said lower region of said channel to move between an uppermost position and a lowermost position, said slider having a lower end for sealing said channel when in said uppermost position;
- and
- a hydraulic means for moving said valve piston, said air valve and said slider.
4 more elements
In a reciprocating internal combustion engine having a combustion chamber for the combustion of finely divided solid fuel, the combination comprising
- a valve piston for cyclically expelling solid fuel particles into said combustion chamber of the engine from a powdered coal collector disposed in said valve piston and adjacent said combustion chamber;
- a channel extending from said collector along a straight vertical longitudinal axis to deliver a fuel/air suspension to said collector;
- an air valve disposed in said channel above said collector for cyclically charging air into said collector to expel the fuel particles in said collector into said combustion chamber through said valve piston;
- and
- means for forming a suspension of solid fuel particles and air, said means including a hollow drum rotatably disposed about a horizontal axis above said channel and having a plurality of slots in the periphery, a powdered coal reservoir located within said drum to dispense powdered coal into at least some of said slots, and an air supply means located in the area of the lowest point of said drum and having a downwardly directed air discharge channel communicating with said vertically disposed channel.
2 more elements
Dependencies are inferred from the claim text.