Exhaust cleaning system for internal combustion engine

Patent · Tue Mar 22 04:00:00 EST 1977

OSTI ID:7260605

Masaki, K; Nagaishi, H; Konno, M; Ookubo, Y

An exhaust cleaning system for use with an automotive multiple-cylinder internal combustion engine including first and second groups of engine cylinders which are to be alternately fired is described. The device consists of a thermal reactor composed of an outer tubular structure formed with a first group of exhaust inlet ports leading from the first group of engine cylinders and a second group of exhaust inlet ports leading from the second group of engine cylinders, an inner tubular structure positioned within the outer tubular structure and formed with openings, and at least one air-injection nozzle opening in a longitudinal end portion of the interior or a re-combustion chamber of the inner tubular structure. Exhaust gases from each of the first group of engine cylinder are fired in the vicinity of the nozzle openings with the agency of secondary air injected from the nozzle, and exhaust gases from each of the second group of engine cylinders are fired by the resultant hot gases advancing through a hot zone of the re-combustion chamber. Additional secondary air and/or secondary fuel may be admixed to the exhaust gases preferably during low-load condition of the engine when the temperature of the exhaust gases lowers.

• Assignee: Nissan Motor Co., Ltd.
• Patent Number(s): US 4012905
• OSTI ID: 7260605
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
AFTERBURNERS
AIR
AIR POLLUTION CONTROL
CYLINDERS
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
INTERNAL COMBUSTION ENGINES
MIXING
NOZZLES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
TUBES
WASTES