Cleaner control for diesel engine exhaust gases

Patent · Tue Aug 12 04:00:00 EDT 1986

OSTI ID:5286866

Nomoto, Y; Matsuoka, T

An exhaust cleaner system is described for a diesel engine having an exhaust system for the discharge of exhaust gases emitted from the discharge of exhaust gases emitted from the engine. The cleaner system consists of, in combination: an exhaust duct for conducting engine exhaust gas; a cleaner having a filter disposed therein and an upstream compartment located upstream of the filter; a burner unit including a combustion chamber having an outlet communicating with the upstream compartment and including a fuel nozzle and an igniter for combusting a mixture of fuel and air to produce a flame for providing to the outlet a high temperature combustion gas necessary to elevate the temperature of the exhaust gases entering the upstream chamber to a temperature suitable for incinerating carbon particulates trapped by the filter; an air supply means for supplying air to the combustion chamber upstream of the outlet thereof; a fuel supply means for supplying fuel to the combustion chamber upstream of the outlet thereof; sensing means for sensing pressure inside the combustion chamber upstream of the outlet thereof and for generating a signal indicative thereof; an air pressure regulating means actuated by the signal for increasing the pressure of the air supplied to the combustion chamber in correspondence with an increase in pressure within the combustion chamber; and a fuel pressure regulating means actuated by the signal for increasing the pressure of fuel supplied to the combustion chamber in correspondence with an increase in pressure within the combustion chamber, the burner operative during the discharge of the exhaust gases through the filter.

• Assignee: Mazda Motor Corp., Hiroshima
• Patent Number(s): US 4604868
• OSTI ID: 5286866
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
330705 -- Emission Control-- Particulates
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION CONTROL
BURNERS
CARBON
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CHAMBERS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DIESEL ENGINES
DISPERSIONS
DUCTS
ELEMENTS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FILTERS
FILTRATION
FLAME PROPAGATION
FLUID FLOW
FLUIDS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MIXTURES
NONMETALS
NOZZLES
OXIDATION
PARTICLES
PARTICULATES
POLLUTION CONTROL
PRESSURE REGULATORS
SEPARATION PROCESSES
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
WASTES