Abstract: An engine system includes an electronically controlled compression ignition engine configured to burn diesel fuel to produce an exhaust with a temperature and NOx to soot ratio. An aftertreatment system is fluidly connected to the engine and includes a diesel oxidation catalyst, a reductant supply, and a diesel particulate filter coated with a NOx reduction catalyst but not the diesel oxidation catalyst. A soot load density in the diesel particulate filter is stabilized by oxidizing soot at about a same rate as the compression ignition engine is supplying soot to the aftertreatment system without active regeneration. A NOx reduction reaction is catalyzed by the NOx reduction catalyst on the diesel particulate filter.

Abstract: The present invention is a mechanical device used in the hunting and gaming industries. The device is a system called the EKG targeting system, which is comprised of a scope, which, in one embodiment is comprised of a laser rangefinder, an L-shaped sliding mount, a sliding face-mount bracket, a trigger release mounting bracket, bolts and nuts to secure pieces of the system together, a pin sight, a mounting for the pin sight and a trigger release. In another embodiment, the system is comprised of almost any scope used in archery targeting, an L-shaped sliding mount, a sliding face-mount bracket, a trigger release mounting bracket, bolts and nuts to secure pieces of the system together and a trigger release.

Abstract: An aftertreatment system for an internal combustion engine includes a treatment device having a combined particulate filter and SCR catalyst. The combined particulate filter and SCR catalyst treats uncatalyzed exhaust from the internal combustion engine including between approximately 7 g NOx/kW-hr and approximately 10 g NOx/kW-hr.

Abstract: An exhaust treatment system associated with a power source is disclosed. The exhaust treatment system may have a filter located to remove particulate matter from an exhaust flow of the power source. The exhaust treatment system may further have a heat source located to elevate the temperature of the exhaust flow. The exhaust treatment system may also have a first sensor and a second sensor. The exhaust treatment system may further have a controller in communication with the heat source, the first sensor, and the second sensor. The controller may be configured to receive a particulate matter load value and a power source load value and activate the heat source when the particulate matter load value is above a particulate matter load threshold value and the power source load value is below a power source load threshold value that is indicative of the exhaust flow being within an exhaust flow range.

Abstract: An engine system includes an electronically controlled compression ignition engine configured to burn diesel fuel to produce an exhaust with a temperature and NOx to soot ratio. An aftertreatment system is fluidly connected to the engine and includes a diesel oxidation catalyst, a reductant supply, and a diesel particulate filter coated with a NOx reduction catalyst but not the diesel oxidation catalyst. A soot load density in the diesel particulate filter is stabilized by oxidizing soot at about a same rate as the compression ignition engine is supplying soot to the aftertreatment system without active regeneration. A NOx reduction reaction is catalyzed by the NOx reduction catalyst on the diesel particulate filter.

Abstract: In one aspect, the present disclosure is directed to a method for treating exhaust from an engine. The method may comprise generating a first signal indicative of an engine load and generating a second signal indicative of a pollutant level. The method may further comprise recirculating exhaust based on the first signal and injecting a reductant based on the first signal and the second signal.

Abstract: An exhaust treatment system for use with a power system is disclosed. The exhaust treatment system may have an SCR device (32), and an oxidation device (26) located upstream of the SCR device (32) to convert NO to NO2. The exhaust treatment system may also have an exhaust passageway (14) extending from an exhaust source (10) to the oxidation device (26), and a bypass passageway (24) extending from the exhaust passageway at a location upstream of the oxidation device to the exhaust passageway at a location downstream of the oxidation device (26). The exhaust treatment system may further have a valve element (20) configured to selectively direct exhaust from the exhaust source (10) through the oxidation device (26) and through the bypass passageway (24), at least one sensor configured to sense operating parameters of the exhaust source (10), and a controller (36) in communication with the valve element (20).

Abstract: An exhaust treatment system associated with a power source is disclosed. The exhaust treatment system may have a filter located to remove particulate matter from an exhaust flow of the power source. The exhaust treatment system may further have a heat source located to elevate the temperature of the exhaust flow. The exhaust treatment system may also have a first sensor and a second sensor. The exhaust treatment system may further have a controller in communication with the heat source, the first sensor, and the second sensor. The controller may be configured to receive a particulate matter load value and a power source load value and activate the heat source when the particulate matter load value is above a particulate matter load threshold value and the power source load value is below a power source load threshold value that is indicative of the exhaust flow being within an exhaust flow range.

Abstract: In one aspect, the present disclosure is directed to a method for treating exhaust from an engine. The method may comprise generating a first signal indicative of an engine load and generating a second signal indicative of a pollutant level. The method may further comprise recirculating exhaust based on the first signal and injecting a reductant based on the first signal and the second signal.

Abstract: A filter media is disclosed. The filter media includes a plurality of channels separated by porous sidewalls extending longitudinally from a first end to a second end. The plurality of channels includes a plurality of first channels and a plurality of second channels. The first channels are open at both the first end and the second end and have a first width. The second channels are closed at the first end and open at the second end and have a second width greater than the first width.

Abstract: Some embodiments of the present invention generally provide an apparatus that may be used in a coiled tubing drillstring and that can switch between effectively straight drilling and curved drilling without halting drilling. Methods for steering a coiled tubing drillstring are also provided. In one embodiment, an apparatus for use in drilling a wellbore is provided. The apparatus includes a mud motor; a housing; an output shaft; and a clutch actuatable between two positions. The clutch is configured to rotationally couple the mud motor to the output shaft when the clutch is in a first position as a result of fluid being injected through the clutch at a first flow rate, and rotationally couple the output shaft to the housing when the clutch is in a second position as a result of fluid being injected through the clutch at a second flow rate.

Abstract: A method of adjusting the resonant frequency of a torsional hinged device such as a resonant mirror is disclosed. A material such as printer ink, epoxy, or solder balls is applied to the tips of the torsional hinged device to lower the frequency into a selected frequency range.

Abstract: Some embodiments of the present invention generally provide an apparatus that may be used in a coiled tubing drillstring and that can switch between effectively straight drilling and curved drilling without halting drilling. Methods for steering a coiled tubing drillstring are also provided. In one embodiment, an apparatus for use in drilling a wellbore is provided. The apparatus includes a mud motor; a housing; an output shaft; and a clutch actuatable between two positions. The clutch is configured to rotationally couple the mud motor to the output shaft when the clutch is in a first position as a result of fluid being injected through the clutch at a first flow rate, and rotationally couple the output shaft to the housing when the clutch is in a second position as a result of fluid being injected through the clutch at a second flow rate.

Abstract: Apparatus and method for providing both a high-speed drive signal for generating and monitoring the scanning sweep of a laser beam and a low speed signal for moving the scanning beam sweep orthogonally and monitoring the orthogonal movement. The apparatus and method uses a single pair of conductors for carrying both the high speed and low speed signals thereby reducing the number of conductors and connectors.

Abstract: Apparatus and methods for removing jitter and stabilizing the feed back system of a torsional hinged device with minimal changes to the system. The stabilization is accomplished by spatially isolating the pivoting mirror structure from all drive, support and packaging structures to reduce air drag. The mirror structures may be further stabilized by tailoring the drive mechanism and the position of the mechanism to produce substantially pure rotational drive torque on the mirror.

Abstract: Apparatus and methods for removing jitter and stabilizing the feed back system of a torsional hinged device with minimal changes to the system. The stabilization is accomplished by introducing a selected amount of lateral motion (in addition to the rotational motion) by creating asymmetry in the oscillating device or the drive torque applied to the device.

Abstract: A robust torsional hinged device and a method of fabricating the device are disclosed. Unlike the prior art torsional hinged devices, the width “W” of the hinge is selected to be greater than the thickness “T” of the silicon wafer from which the torsional hinged device is etched. Therefore, since the top and bottom surfaces of the silicon wafer are polished, the larger dimension of the rectangular cross-sectional hinge lies along a polished surface rather than the rougher etched surface. Since the roughness or striations act as stress concentration and since the greater stress levels of a torsional hinge lie along the largest dimension, a more robust hinge is obtained.

Abstract: A system and method for providing a resonant beam sweep about a first axis. A mirror or reflective surface supported by a first pair of torsional hinges is driven into resonant oscillations about the first axis by inertially coupling energy through the first pair of torsional hinges. A light source reflects a beam of light from the mirror such that the oscillating mirror produces a beam sweep across a target area. The resonant beam sweep is moved orthogonally on the target area by a gimbals portion of the mirror pivoting about a second axis according to one embodiment. A second independent mirror provides the orthogonal movement according to a second embodiment.

Abstract: A magnetic drive for providing pivotal motion to a functional surface, such as a mirror. The magnetic drive may be used to drive any torsional hinged device, but is particularly suitable for driving a torsional hinged mirror. According to a first embodiment, a dual axis functional surface uses a first pair of torsional hinges to provide primary movement to the functional surface and a second pair of torsional hinges provides movement orthogonal to the primary movement to allow positioning in two directions. The mass and movement of inertia of the functional surface is reduced by relocating permanent magnet sets to the axis of rotation. The reduced mass and movement of inertia results in a stiff robust hinge having a resonant frequency above about 120 Hz.

Abstract: A magnetic drive for providing pivotal motion to a mirror device. The magnetic drive may be used to drive any torsional hinged mirror, but is particularly suitable for driving a high-speed, torsional hinged mirror at its resonant frequency for use as the drive engine of a printer or visual display. According to a first embodiment, a dual axis mirror uses a first pair of torsional hinges to provide the resonant beam sweep and a second pair of torsional hinges to provide high-speed movement orthogonal to the beam sweep to maintain successive images of the sweep parallel to each other. The mass and movement of inertia of the resonant mirror are reduced by relocating permanent magnet sets to the axis of rotation. The reduced mass and movement of inertia allows a significantly higher resonant frequency and corresponding high pivotal speed.