摘要:
The present invention relates to an engine exhaust treatment system (20) including a first exhaust gas path (24) having a diesel particulate filter (32) and a second exhaust gas path (26) having a catalytic converter (34). The system also includes a valve arrangement (36, 38), for controlling exhaust gas flow between the first and second paths (24, 26). The system (20) further includes a controller (40) for sensing/monitoring operating conditions of the engine (22) and the condition of the diesel particulate filter (32). The controller (40) shifts exhaust gas flow between the first and second paths (24, 26) based on the operating condition of the engine (22) and/or the condition of the diesel particulate filter (32) to optimize filtration efficiency while preventing unacceptable levels of backpressure and detrimental regeneration of the filter (32).
摘要:
A system is disclosed for dispensing fuel into the transient flow of an exhaust system to control exhaust emissions. A controller initiates the delivery of fuel into the exhaust when an emissions control device, such as a diesel particulate filter, requires increased exhaust temperatures for regeneration. In operation, pressurized fuel and pressurized air are supplied to a fuel delivery device, wherein a fuel injector pre-mixes fuel with air. The fuel-air mixture is then dispensed into the exhaust flow through a nozzle, causing a rapid pressure drop in the mixture that results in the pressurized air expanding rapidly, breaking the fuel spray into fine particles.
摘要:
A system or method for controlling the delivery of fuel into the transient flow of an exhaust system to control emissions. A mathematical model representative of the exhaust system can be used to determine, based on operating conditions of the exhaust system, a rate of fuel delivery suitable for achieving a desired result. The desired result can be to increase the temperature of a diesel particulate filter to a temperature suitable for regeneration without exceeding a temperature that may damage the diesel particulate filter.
摘要:
An aesthetic cover assembly includes first mounting portion of a cover wall for concealing a portion of a building structure that is secured to the building structure. An alignment pin is secured on one of the first mounting portions and the building structure. The alignment pin supports a second mounting portion of a cover wall for concealing a portion of the building structure. A method of installing an aesthetic cover assembly is also included.
摘要:
An aesthetic cover assembly includes first mounting portion of a cover wall for concealing a portion of a building structure that is secured to the building structure. An alignment pin is secured on one of the first mounting portions and the building structure. The alignment pin supports a second mounting portion of a cover wall for concealing a portion of the building structure. A method of installing an aesthetic cover assembly is also included.
摘要:
An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.
摘要:
The present disclosure relates to a diesel exhaust treatment device including a catalytic converter positioned upstream from a diesel particulate filter. An electric heater is positioned between the catalytic converter and the diesel particulate filter. A shore station can be used to provide power and combustion air to the diesel exhaust treatment device during regeneration of the diesel particulate filter.
摘要:
The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust treatment device. The pulse cleaner includes a cabinet, a diesel exhaust treatment device mount positioned within the cabinet for mounting the diesel exhaust treatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust treatment device during cleaning. The pulse cleaner also includes a pulse generator for generating pulses that are each directed at a majority of a face of the diesel exhaust treatment device when the diesel exhaust treatment device is mounted at the diesel exhaust treatment device mount. The pulse generator includes a pressure tank for accumulating pressurized air, and a valve arrangement that flushes the pressurized air from the tank. A pulse of air for cleaning the diesel exhaust treatment device is generated each time the tank is flushed.
摘要:
A device for clamping together flanged conduits is disclosed herein. The device includes a band structure including one or more channel members that curve about a center reference point. The channel members are adapted to receive the flanges of the conduits. The device also includes a fastener for tightening the channel members about the conduits. The device further includes a plurality of centering members that project into an interior region defined by the band structure. The centering members are adapted to engage the flanges to provide alignment between the conduits as the conduits are clamped together.
摘要:
An exhaust filter having a pleated filter media mounted between end caps is disclosed herein. The filter has a construction suitable for high temperature environments such as engine exhaust systems.