Abstract: An engine promoting DPF regeneration processing is provided. Catalyst activation processing and thereafter DPF regeneration processing are performed under control of a device. In the catalyst activation processing, a target temperature of exhaust at an exhaust exit of a catalyst is set to be in a first temperature region, and then the opening degree of an exhaust throttle device is controlled. In the DPF regeneration processing, the target temperature is set to be in a second temperature region. A target temperature of the exhaust at an exhaust inlet of a DPF is set to be in a third temperature region. The opening degree of the exhaust throttle device is controlled, and unburned fuel is supplied into the exhaust. The temperature regions are set to be successively higher, and a temperature difference between successive temperature regions is set to be successively lower.

Abstract: A vacuum cleaner incorporating a cyclone separation device comprises a cylindrical cyclone chamber having a tubular side wall in the form of a filter. An auger is mounted within the chamber for rotation about the longitudinal axis thereof, the auger having a vane which extends along the chamber in a first helical direction. In use, the auger is rotated in a direction opposite to said helical direction so that separated dirt and dust is driven to a collection region at the bottom of the chamber and compacted. The collection region preferably expands during use to increase the capacity thereof. A vacuum cleaner in accordance with the invention has to be emptied less regularly and any risk of dust re-entrainment is reduced.

Abstract: In a case where DPF regeneration is restarted after an engine is automatically restarted from interruption of the DPF regeneration, DPF regeneration control is corrected so as to suppress temperature rise due to the DPF regeneration in consideration of an increment in oxygen concentration in exhaust gas which is caused due to the interruption of the DPF regeneration. Specifically, restart of the DPF regeneration is prohibited during a predetermined prohibition time ?T1 from a time t1 at which the engine is automatically restarted, and a post injection amount of fuel is corrected to the side of reduction.

Abstract: An exhaust gas purifying apparatus for a diesel engine includes a diesel particulate filter (DPF) in an exhaust system in the diesel engine. The exhaust gas purifying apparatus is constructed to execute regeneration of the DPF by raising a temperature of the DPF in a case where a predetermined DPF regeneration condition is fulfilled, interrupt the regeneration of the DPF, execute idling stop, automatically restart the diesel engine and then restart the regeneration of the DPF, and when shifting to the idling operation is carried out during regeneration of the DPF, delay execution of the idling stop until a temperature of the DPF at a time at which the idling stop is started becomes not less than a temperature of the DPF at a time at which shifting to an idling operation is carried out even in a case where the predetermined idling stop condition is fulfilled.

Abstract: An exhaust gas purification system with which a frequency of diesel particulate filter (“DPF”) regeneration requests can be reduced during long low idle regeneration, thereby improving convenience, including a control unit that performs regeneration control on a DPF provided at an exhaust pipe of an engine. The control unit includes a particulate matter (“PM”) accumulation amount predictor for predicting the amount of PM accumulated by calculating a cumulated value of the PM in an idling state. The control unit starts calculating the cumulated value of the PM by the PM accumulation amount predictor after a first predetermined time has elapsed since a detection of the idling state.

Abstract: Embodiments provide methods, apparatuses, and articles of manufacture for filtering particulates from an airflow directed at a heat exchanger. A blade may gather the filtered particulates. The gathered particulates may then be exhausted.

Abstract: An air filtering system and method for self-cleaning the same is provided. The system has a plurality of air filters including a first filter and at least one neighboring filter. A blower fan pulls air through the filters. A plurality of compressed air injectors are provided adjacent the filters including a first injector and at least one neighboring injector. Self-cleaning is achieved while the blower fan is running by preforming several steps including activating the first injector to force compressed air into the first filter and discharge particulate from the first filter followed by deactivating the first injector. The steps further provide reactivating the first injector and simultaneously activating the neighboring injector while the discharged particulate is airborne to provide an air shield about the first filter and force the discharged particulate away from the first filter and the neighboring filter. These steps are repeated for each filter.

Abstract: An indoor unit (1) is provided with an output control portion (35, 71) for controlling a cleaning signal output portion (33, 48) to output a cleaning signal when it is determined that the amount of dust in a dust storing portion (60, 90) has reached a predetermined first level, and when it is determined that the amount of dust in the dust storing portion (60, 90) has reached a second level that is higher than the first level.

Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.

Abstract: An exhaust gas purifying apparatus for a diesel engine includes a diesel particulate filter (DPF) in an exhaust system in the diesel engine. The exhaust gas purifying apparatus is constructed to execute regeneration of the DPF by raising a temperature of the DPF in a case where a predetermined DPF regeneration condition is fulfilled, interrupt the regeneration of the DPF, execute idling stop, automatically restart the diesel engine and then restart the regeneration of the DPF, and when shifting to the idling operation is carried out during regeneration of the DPF, delay execution of the idling stop until a temperature of the DPF at a time at which t20he idling stop is started becomes not less than a temperature of the DPF at a time at which shifting to an idling operation is carried out even in a case where the predetermined idling stop condition is fulfilled.

Abstract: In a case where DPF regeneration is restarted after an engine is automatically restarted from interruption of the DPF regeneration, DPF regeneration control is corrected so as to suppress temperature rise due to the DPF regeneration in consideration of an increment in oxygen concentration in exhaust gas which is caused due to the interruption of the DPF regeneration. Specifically, restart of the DPF regeneration is prohibited during a predetermined prohibition time ?T1 from a time t1 at which the engine is automatically restarted, and a post injection amount of fuel is corrected to the side of reduction.

Abstract: A diesel particulate defuser (“DPD”) is connected to an exhaust pipe of a diesel engine, an exhaust gas temperature during automatic regeneration of the DPD is detected, and the difference between the detected exhaust gas temperature and a target regeneration temperature is determined. In a case where an exhaust pipe injection amount is PID controlled based on this difference, when an exhaust brake valve is closed during traveling automatic regeneration, the exhaust pipe injection is stopped and calculation of an integral control term by the PID control is continued as long as the exhaust valve brake valve is closed, and when the exhaust brake valve is opened, the integral control term that has been continuously calculated is taken as an initial operation amount.

Abstract: An exhaust gas purification system with which a frequency of diesel particulate filter (“DPF”) regeneration requests can be reduced during long low idle regeneration, thereby improving convenience, including a control unit that performs regeneration control on a DPF provided at an exhaust pipe of an engine. The control unit includes a particulate matter (“PM”) accumulation amount predictor for predicting the amount of PM accumulated by calculating a cumulated value of the PM in an idling state. The control unit starts calculating the cumulated value of the PM by the PM accumulation amount predictor after a first predetermined time has elapsed since a detection of the idling state.

Abstract: The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.

Abstract: An exhaust gas aftertreatment system for an engine can perform manual regeneration control for regenerating a particulate removal filter by increasing the engine rotation speed. The system can suppress the engine rotation speed increase while maintaining the exhaust gas temperature required to regenerate the particulate removal filter. The system can set the target engine rotation speed to a first set value when a regeneration instruction signal from a manual regeneration switch is received. When, although the engine rotation speed falls within a predetermined engine rotation speed range including the first set value that is the target engine rotation speed for a predetermined time period, the exhaust gas temperature does not reach the filter's regeneration temperature within the predetermined time period, the target engine rotation speed is repeatedly reset by being increased from the first set value by a predetermined rotation speed.

Abstract: The present invention includes: a rolled filter stretched between first and second winding shafts and, unused part of the filter being wound around the second winding shaft; a brush provided between the first and the second winding shafts so as to come into contact with a surface of the filter; a feeding mechanism for driving the first and the second winding shafts to take up or rewind the filter; and a feeding control unit for controlling the feeding mechanism. When activating a renewing operation for feeding unused part of the filter from the second winding shaft, the feeding control unit controls the feeding mechanism such that once the filter is taken up by the first winding shaft by an take-up amount La, the filter is rewound by the second winding shaft by a rewind amount Lb, and La and Lb satisfy a relationship La?Lb.

Abstract: Embodiments provide methods, apparatuses, and articles of manufacture for filtering particulates from an airflow directed at a heat exchanger. A blade may gather the filtered particulates. The gathered particulates may then be exhausted.

Abstract: An HVAC system having an air cleaner, a fan configured to selectively generate an air flow, wherein at least a portion of the air flow is passed through the air cleaner, and a controller configured to control the air cleaner in response to at least one of a setting for controlling the fan and an operation characteristic of the fan is disclosed. A method of controlling an air cleaner by determining an air flow related criterion value, wherein the air flow is associated with an air flow through an air cleaner, comparing the determined air flow related criterion value to a threshold criterion value, and controlling the air cleaner as a function of a result of comparing the determined air flow related criterion value to the threshold criterion value is disclosed. A method of controlling an ozone concentration outputted by an air cleaner is disclosed.

Abstract: The subject of this patent application is an improved method for extracting grease and heat from the exhaust air over cooking equipment. This invention collects more grease than other grease baffle filters by combining principles of vapor condensation and centrifugal particulate separation. It converts waste heat into usable heat. It cools exhaust temperatures and reduces humidity on recirculating hood systems. It has self-cleaning capabilities using in-line heated water. It is programmable for automatic operation and performance monitoring. And it can be used with nearly any standard existing or new commercial kitchen exhaust hood as a replacement for the standard grease baffle filter.

Abstract: A control system includes a heater control module, a measured duration module, and a regeneration volume module. The heater control module selectively initiates a regeneration in a zone of a particulate filter in an exhaust system. The measured duration module measures a duration of the regeneration. The regeneration volume module determines an available volume within the particulate filter to regenerate particulate based on the measured duration of the regeneration.

Abstract: An air filter coupled to an air inlet, which draws in air. The air filter is automatically cleaned to prevent clogging. When the supply of power is cut off during a cleaning operation sequence of the air filter and the electronic device restarts operation thereafter, the interrupted cleaning operation sequence is completed. An automatic cleaning operation may be performed on the air filter when a video projector, which serves as an electronic device, starts to operate. In addition, an automatic cleaning operation may he performed on the air filter when clogging of the air filter is detected.

Abstract: A method and apparatus are disclosed for unblocking a perforated rotary filter screen. In the invention, at least one jet of high pressure air is directed at a surface of the filter screen as the filter screen is rotated and the or each jet of air is moved in a direction transverse to the direction of movement of the perforations in the screen in order to cause the or each air jet to trace a spiral or helical path over the surface of the screen.

Abstract: A dust collection device has a tank, a suction unit, a filtering unit, a dust removal unit, a first detection unit, and a control unit. The tank has an air inlet for accommodating dust. The suction unit aspirates the dust through the air inlet. The filtering unit captures the dust through the air inlet. The dust removal unit removes the dust from the filtering unit. The first detection unit detects an operational state of the suction unit. The control unit controls the suction unit and the dust removal unit. The control unit activates the dust removal unit, when the first detection unit detects that the suction unit operates for a first predetermined time period and then stops operating.

Abstract: An indoor unit (1) is provided with an output control portion (35, 71) for controlling a cleaning signal output portion (33, 48) to output a cleaning signal when it is determined that the amount of dust in a dust storing portion (60, 90) has reached a predetermined first level, and when it is determined that the amount of dust in the dust storing portion (60, 90) has reached a second level that is higher than the first level.

Abstract: The present invention includes: a rolled filter stretched between first and second winding shafts and, unused part of the filter being wound around the second winding shaft; a brush provided between the first and the second winding shafts so as to come into contact with a surface of the filter; a feeding mechanism for driving the first and the second winding shafts to take up or rewind the filter; and a feeding control unit for controlling the feeding mechanism. When activating a renewing operation for feeding unused part of the filter from the second winding shaft, the feeding control unit controls the feeding mechanism such that once the filter is taken up by the first winding shaft by an take-up amount La, the filter is rewound by the second winding shaft by a rewind amount Lb, and La and Lb satisfy a relationship La?Lb.

Abstract: A method and an apparatus (10) for separating dust constituents out of an explosive dust-air mixture which is passed through a filter housing (26) with filter elements having filter surfaces use a dust container (64), which can be connected in a gastight manner to the filter housing (26), contains inert additive particles (60), into which the process dust produced as a result of the filter surfaces being cleaned down drops and from which the additive particles (60) can be blown onto the filter surfaces by means of compressed air (138). There is a weighing device (122, 124) for the dust container (64).

Abstract: A particulate filter assembly includes an electrode assembly, a particulate filter positioned in an electrode gap defined between two electrodes of the electrode assembly, a power supply electrically coupled to the electrode assembly, and a controller for controlling operation of the power supply to apply a regenerate-filter signal to the electrode assembly to oxidize particulates collected by the particulate filter. An associated method of regenerating the particulate filter is disclosed.

Abstract: A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower and the vacuum toward closing the first opening, is held against the bias by a trigger outside the box to close the second opening. The external trigger intervally operates to release the interior gate to close the first opening and open the second opening. The blower operates only if the trigger is operating. The gate is released once for approximately 1/12 of a cycle interval during each trigger operating interval. A plurality of valves can be combined in a system with one trigger for cyclically sequentially connecting a plurality of filters to the vacuum and the blower.

Abstract: The invention relates to a device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants, comprising at least one dust filter via which the flue gases are guided, and by means of which the dust from the flue gases can be filtered out as it passes through the dust filter. In order to produce a device which separates dust in a highly efficient manner and which can be operated in a highly reliable manner and be used to heat combustion air for the combustion plant, the at least one dust filter is embodied as a bulk material filter in whose bulk material heat from the flue gases can be collected when the bulk material is cross-flown by the flue gases and by means of whose bulk material heat collected from the flue gases when the combustion air of the combustion plant flows through the bulk material filter can be given off to said combustion air.

Abstract: In a particle filter with carbon (soot) deposit combustion for Diesel engines comprising a filter with filter areas of sinter metal through which exhaust gases from the Diesel engine are conducted to remove the soot therefrom, the soot collected at the raw gas side of the filter surfaces is burned off by radiation heaters which are arranged so as to radiate between wedge-like filter pockets of the particle filter such that selected areas of the filter are heated to initiate combustion of the soot on the filter surfaces.

Abstract: A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower and the vacuum toward closing the first opening, is held against the bias by a trigger outside the box to close the second opening. The external trigger intervally operates to release the interior gate to close the first opening and open the second opening. The blower operates only if the trigger is operating. The gate is released once for approximately {fraction (1/12)} of a cycle interval during each trigger operating interval. A plurality of valves can be combined in a system with one trigger for cyclically sequentially connecting a plurality of filters to the vacuum and the blower.

Abstract: A particulate filter regenerating device is configured to regenerate a particulate filter that collects particulate from engine exhaust gas. The particulate filter regenerating device is configured to prevent the temperature of the particulate filter from exceeding an allowable temperature during regeneration when the quantity of accumulated particulate is estimated to be lower than it actually is due to variation of the estimate. When the amount of temperature rise per unit time of the particulate filter is larger than a prescribed value during regeneration, it is determined that the temperature of the particulate filter will soon exceed the allowable temperature and the temperature rise amount &Dgr;Texh of the exhaust gas is reduced (&Dgr;Texh1 is the normal temperature rise amount). The larger the temperature rise per unit time is, the more the temperature rise amount of the exhaust gas is reduced.

Abstract: A regenerable air cleaning device is disclosed which comprises a filter holder supporting a regenerable filter that includes activated carbon fibers (ACF) and a control system that is adapted to determine when to regenerate the regenerable filter. The device exhibits high performance and longevity over many regeneration cycles.

Abstract: An air induction system with active noise control includes a self-cleaning air filter that is integrated within an air intake housing. The self-cleaning air filter filters out contaminants such as dust and dirt particulates from air flowing through the intake housing. The self-cleaning filter is powered and controlled by the same electronic unit that is used to power the active noise control system.

Abstract: An automatic filter cartridge in accordance with the present invention includes a frame which is formed with an aperture and an elongated filter medium which is attached to a supply roller and a take-up roller. Specifically, the supply and take-up rollers are placed into respective supply and take-up containers which are mounted on the frame across the aperture. The frame is then positioned in the ducting of an air conditioning system to filter the airflow through the filter medium which extends across the aperture. To monitor the airflow through the ducting, the automatic filter cartridge can further include a computer. With this configuration, a sensor is positioned in the ducting to monitor the airflow through the ducting. When the sensor indicates the filter medium in the ducting is dirty, the computer activates a motor to rotate the take-up roller.