Reducing pollution from internal combustion engines

Details Reducing pollution from internal combustion engines Reducing pollution from internal combustion engines

1976-02-02

1978-08-15

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60282, F02B 7510, F01N 310

Patent

active

041062876

ABSTRACT:
A multicylinder internal combustion engine is operated with one cylinder supplied with a fuel-rich charge and the other cylinder(s) with a lean or leaner charge so that the said one cylinder produces "rich" exhaust gas which is rich in combustible components and the other cylinder(s) produce "lean" exhaust gas which is lean in combustible components. Air is mixed with the exhaust gas from each cylinder, and the rich exhaust gas ignites. The rich exhaust gas is passed into one end of a cylindrical reactor and the lean exhaust gas into the remaining part of the reactor. A tubular member disposed concentrically within the reactor has one or more flame-trap orifices at or towards the said one end and is connected to an exhaust pipe at the other end. Burning rich exhaust gas passes through the flame trap orifices into the tubular member and entrains therewith lean exhaust gas causing combustion of combustible components therein. A stationary mixer within the tubular member ensures that the combustion is substantially complete, and also promotes heat exchange between the hot gases passing to the exhaust pipe and the exhaust gas in the reactor around the tubular member.

REFERENCES:
patent: 2837169 (1958-06-01), Sawyer
patent: 3635031 (1972-01-01), Haddad
patent: 3768260 (1973-10-01), Glenn
patent: 3785153 (1974-01-01), Schwing
patent: 3791144 (1974-02-01), Lang
patent: 3910240 (1975-10-01), Omori
patent: 3927525 (1975-12-01), Jacobs
patent: 3934411 (1976-01-01), Masaki

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