Carburetor
AssigneeBritish Gas Corporation
InventorsDennis John Jager, Steven John Charlton, John Slowley
Life of this patent
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Abstract
A carburetor (2) to supply a mixture of fuel gas and combustion air to a reciprocating internal combustion engine. The carburetor has a venturi (4) and a throttle (10) including a throttle valve (24). A tear-drop shaped obstruction (36) is mounted in the venturi throat (18) on diametrically opposed radial arms (66). The narrowest part of the tubular gap (46) between the walls of venturi (4) and the obstruction (36) is at gap (48). A continuous slot (50) in the throat wall (18) encircles the obstruction and opens into gap (48). Another continuous slot (70) encircling the obstruction (36) is formed therein and also opens into the gap (48). Fuel gas is supplied to the slots (50 and 70) through passages (52, 74 and 72).
Claims20
A carburettor for the supply of fuel gas to mix with combustion air for the mixture to be supplied to power a reciprocating internal combustion engine, said carburettor comprising:
- a venturi passage for the flow of combustion air therethrough, said venturi passage including a throat;
- an obstruction disposed in said throat, said obstruction being spaced from a wall of said throat by a gap wholly surrounding the obstruction;
- a first slot opening into said gap at said throat and extending circumferentially along the wall of the throat to substantially surround the obstruction;
- a second slot opening into said gap at said throat and extending circumferentially along an outer wall of the obstruction, said second slot substantially surrounding said obstruction;
- an adjusting means for variably adjusting a size of said first or second slot;
- and
- a passage means to supply fuel gas to said slots for the gas to emerge from said slots into the throat.
Dependencies are inferred from the claim text.