Abstract: Methods and systems are provided for an engine including a crankcase. A condition of the engine may be diagnosed based on frequency content of crankcase pressure. Different types of degradation may be distinguished based on a frequency content of multiple frequencies of the crankcase pressure. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.

Abstract: Various methods and systems are provided for an engine capable of receiving liquid and gaseous fuel. In one example, cylinder misfire may be identified based on a misfire monitor. The misfire monitor may detect misfire based on signals from a crankshaft sensor.

Abstract: A patient protection system and method for using the same includes a face mask structure configured to protect the head of a patient during surgical procedures. The face mask structure includes a foam body having an exterior surface and an interior surface configured to be oriented towards the patient's face to cover the patient's face during the surgical procedure; and at least one foam pad positioned on the interior surface of the face mask structure and configured to contact the patient's face during the surgical procedure. The face mask structure and the at least one foam pad are manufactured from different types of foam.

Abstract: Various methods and systems are provided for a pressure relief valve of a fuel system. In one example, a valve includes a first chamber in fluid communication with a first fuel line, a second chamber in fluid communication with a second fuel line and in fluid communication with a fuel storage tank, a piston separating the first chamber from the second chamber, and a needle coupled to the piston and controlling a flow passage between the second fuel line and the second chamber, where the piston and needle are sized such that a force applied on the piston by the first chamber parallel to an axis of movement of the piston maintains the needle in a closed position when the first fuel line flows fuel at a first pressure and the second fuel line flows fuel at a second pressure, the second pressure greater than the first pressure.

Abstract: A distractor device for distracting a jaw bone divided by osteotomy into an anterior segment and a posterior segment. The distractor device comprises a body, an expansion member adapted to extend relative to the body, a first fixing member extending from the expansion member and having a first mounting portion adapted for mounting to one of the anterior and posterior segments, and a second fixing member extending from the body and having a second mounting portion adapted for mounting to the other of the anterior and posterior segments. In this embodiment, one of the first and second fixing members is shorter in length than the other fixing member, and a distance between the first and second mounting portions being adjustable by movement of the expansion member relative to the body to distract the jaw bone in use.

Abstract: A method of monitoring health of a mechanical drive train is provided. The method includes obtaining voltage and current signals from at least one phase of an electrical machine coupled with the mechanical drive train. The method also includes representing the electrical machine having a non-sinusoidal flux distribution as a combination of a plurality of harmonic order sinusoidally distributed virtual electrical machines based on the obtained voltage and current signals. The method further includes determining a torque profile associated with one or more combinations of the sinusoidally distributed virtual electrical machines. Finally, the method includes detecting the presence of an anomaly in the mechanical drive train based on the torque profile or spectrum.

Abstract: An engine system includes a first cylinder group, a second cylinder group, an inlet manifold coupled to the first cylinder group and the second cylinder group, an inlet passage coupled to the inlet manifold to provide inlet air to the inlet manifold, a first exhaust manifold coupled to the first cylinder group, a second exhaust manifold coupled to the second cylinder group, and a mixer pipe positioned within the second exhaust manifold and/or the intake passage to mix exhaust gas recirculation (EGR) gases exhausted by the second cylinder group that are delivered through the second exhaust manifold with inlet air. The mixer pipe forms an inlet end that is coupled to the second exhaust manifold and an outlet end that is located upstream of the cylinders in the first cylinder group and the cylinders in the second cylinder group.

Abstract: Various embodiments for an exhaust gas treatment device for a vehicle system are provided. In one example, the vehicle system includes an engine with a longitudinal axis, where a crankshaft of the engine is parallel to the longitudinal axis and an exhaust gas treatment device mounted on the engine, vertically above the engine such that a longitudinal axis of the exhaust gas treatment device is aligned in parallel with the longitudinal axis of the engine, the exhaust gas treatment device configured to receive exhaust gas from an exhaust manifold of the engine.

Abstract: Various systems are provided for a support structure. In one embodiment, a system comprises a support structure including a plurality of support legs, a first end of each support leg of the plurality of support legs coupled to a respective cylinder head of a plurality of cylinder heads mountable to an engine block, the plurality of support legs configurable to support an exhaust aftertreatment system.

Abstract: Various embodiments for an exhaust gas treatment device are provided. In one example, the exhaust gas treatment device includes a first substrate coated with a low temperature catalyst configured to operate under a first, low temperature range. The exhaust gas treatment device further includes a second substrate coated with a high temperature catalyst positioned downstream of the first substrate, the high temperature catalyst configured to operate under a second, high temperature range. Further, in the first and second temperature ranges, particulate matter is oxidized at the second substrate.

Abstract: Various methods and systems are provided for varying valve timing in a V-engine. In one embodiment, a method for an engine comprises pivoting a first cam follower for a first cylinder of a first bank and a second cam follower for a second cylinder of a second bank about a rotatable pivot shaft, driving the first cam follower and the second cam follower with a camshaft to operate a respective first valve of the first cylinder and a second valve of the second cylinder, and rotating the pivot shaft to vary a valve timing of the first cylinder and the second cylinder.

Abstract: Various methods and systems are provided for separating particles within a gas flow traveling through a gas flow passage of an engine. In one embodiment, a particle separator includes a plurality of vanes positioned across a gas flow passage through which gas flow passes, the plurality of vanes angled with respect to a flow direction of the gas flow, and a particle trap for collecting separated particles, the particle trap disposed in the gas flow passage.

Abstract: Various methods and systems are provided for regenerating an exhaust gas recirculation cooler. One example method includes, initiating an EGR cooler regeneration mode, wherein the EGR cooler regeneration mode comprises changing a fuel distribution of a donor cylinder group relative to a non-donor cylinder group of an engine, and increasing at least one of engine speed or load of the engine.

Abstract: Various methods and systems are provided for a turbocharger. In one example, a method includes receiving a signal indicative of a monitored pressure of a pressurized oil supply of a turbocharger or other turbomachine. The method further includes determining whether a high frequency component of the signal meets one or more designated criteria, and, if the high frequency component of the pressure meets the one or more designated criteria, generating a first control signal.

Abstract: Various methods and systems are provided for varying valve timing in a V-engine. In one embodiment, a method for an engine comprises pivoting a first cam follower for a first cylinder of a first bank and a second cam follower for a second cylinder of a second bank about a rotatable pivot shaft, driving the first cam follower and the second cam follower with a camshaft to operate a respective first valve of the first cylinder and a second valve of the second cylinder, and rotating the pivot shaft to vary a valve timing of the first cylinder and the second cylinder.

Abstract: Various methods and systems are provided for a turbocharger. In one example, a method includes determining a first pressure at a first location within a turbocharger and determining a second pressure at a second location within the turbocharger. The method further includes indicating degradation of the turbocharger based on the first pressure and the second pressure.

Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on information provided by signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the information. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.

Abstract: Methods and systems are provided for an engine including a crankcase. A condition of the engine may be diagnosed based on frequency content of crankcase pressure. Different types of degradation may be distinguished based on a frequency content of multiple frequencies of the crankcase pressure. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.