Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1977-01-11
1978-07-04
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60290, 60307, F01N 310, F02B 7510
Patent
active
040980782
ABSTRACT:
In a process for the afterburning of the combustible pollutants from an internal combustion engine, in order to automatically reduce the secondary induction rate when power increases without using a controlling valve actuated by the carburettor venturi depression, there is provided a volumetric efficiency of the secondary air pump linked to and activated by the engine and a volumetric efficiency which decreases when the ratio between its back pressure and suction pressure increases, this reduction being achieved through the proper selection of the pump volumetric comression ratio r: between 0.6 c and 1.3 c when a steeply decreasing trend is required, and above 1.3 c if a slower and slower decreasing trend is required. To perform this process an afterburner apparatus has a nitrogen oxide reducing catalyst placed inside the afterburner reactor on the gas stream immediately at the outlet of a torus, in which the gases are homogenized and their reaction with preinjection air is terminated.
REFERENCES:
patent: 3106820 (1963-10-01), Schaffer
patent: 3203168 (1965-08-01), Thomas
patent: 3785152 (1974-01-01), Pozniak
patent: 3812673 (1974-05-01), Muroki
patent: 3826089 (1974-07-01), Nakajima
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