Process and device for operating a diesel engine with an exhaust-gas particle filter
A method is described of operating a diesel engine of the type having an exhaust-gas passage connected to a gas-dynamic pressure-wave machine, a particle filter at a location along the exhaust-gas passage and a bypass passage bypassing the particle filter. The method comprises the steps of: starting the engine with the bypass passage closed so that substantially all exhaust gases are conveyed through the particle filter; operating the engine in the range of idle and up to a predetermined partial load with the bypass passage opened so that substantially all exhaust gases are conveyed through the bypass passage and delivered to the pressure wave machine in an unfiltered condition; operating the engine beyond the predetermined partial load with the bypass closed constantly and completely so that substantially all exhaust gases are delivered to the pressure wave machine in a filtered condition; and elevating the temperature of exhaust gases passing through the exhaust-gas passage during the operating steps by recirculating a portion of the exhaust gases through the engine by means of the pressure wave machine.
- Assignee:
- BBC Brown, Boveri and Co., Limited, Baden
- Patent Number(s):
- US 4702075
- OSTI ID:
- 5776687
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330102* -- Internal Combustion Engines-- Diesel
330705 -- Emission Control-- Particulates
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CONTROL
DIESEL ENGINES
EMISSION
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FILTERS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REMOVAL
START-UP
WASTES