Abstract: Methods and systems are provided for controlling a turbine within an internal combustion engine. In one example, a turbine system within an internal combustion engine may include at least one turbine with a housing that may further include at least one impeller mounted on a rotatable shaft, inlet and outlet regions, and at least one overpressure line including a self-controlling valve for controlling the flow of exhaust gas.

Abstract: An abnormality diagnosing apparatus configured to diagnose abnormality of a fuel injection amount of a diesel engine includes: an oxidation catalyst provided in an exhaust gas passage; an exhaust gas temperature detector configured to detect an upstream-side exhaust gas temperature and a downstream-side exhaust gas temperature, the upstream-side exhaust gas temperature being an exhaust gas temperature on an upstream side of the oxidation catalyst, the downstream-side exhaust gas temperature being an exhaust gas temperature on a downstream side of the oxidation catalyst; and an abnormality determining unit configured to determine whether the fuel injection amount is excessive or not on the basis of comparison between the upstream-side exhaust gas temperature and the downstream-side exhaust gas temperature.

Abstract: A turbocharger has an annular bypass valve disposed in an annular portion of a bypass passage of the turbine housing. The turbine housing defines an exhaust gas chamber having separate half-annular first and second scrolls, and a portion of the bypass passage is sector-divided by a pair of dividing walls that create two 180-degree bypass sectors respectively connected to the first and second scrolls. Each dividing wall has a through-hole. The valve rotor defines a pair of valve members that close the through-holes when the bypass valve is fully closed. When the valve rotor begins to rotate toward an open position, first the valve members open the through-holes to connect the two bypass sectors, and then the bypass flow passages begin to open.

Abstract: A compound engine assembly having an engine core including at least one internal combustion engine in driving engagement with an engine shaft, a compressor having an outlet in fluid communication with an inlet of the engine core and including at least one rotor rotatable about an axis coaxial with the engine shaft, the engine shaft in driving engagement with the compressor rotor, and a turbine section having an inlet in fluid communication with an outlet of the engine core and including at least one rotor engaged on a rotatable turbine shaft, the turbine shaft configured to compound power with the engine shaft. The turbine and engine shafts are parallel to and radially offset from one another, and the turbine shaft and the axis of the compressor rotor are parallel to and radially offset from one another. A method of driving a rotatable load of an aircraft is also discussed.

Abstract: An automatically stoppable internal combustion engine comprises an exhaust purification catalyst, an upstream side air-fuel ratio sensor, a downstream side air-fuel ratio sensor, and sensor heaters heating air-fuel ratio sensors. A controller comprises an air-fuel ratio control part and a heating control part. The heating control part controls the temperature of the upstream side air-fuel ratio sensor to the activation temperature or more and the temperature of the downstream side air-fuel ratio sensor to less than the activation temperature during automatic stop of the internal combustion engine. The air-fuel ratio control part controls the air-fuel ratio of the exhaust gas based on the outputs of the two air-fuel ratio sensors during engine operation and controls the air-fuel ratio of the exhaust gas temporarily based on the output of the upstream side air-fuel ratio sensor without using the output of the downstream side air-fuel ratio sensor.

Abstract: An exhaust gas aftertreatment device for a combustion engine is disclosed. The device includes an exhaust pipe element having an exhaust duct through which exhaust gas of the combustion engine is flowable and a dosage device which opens into the exhaust duct at a feed point, where the dosage device is configured to introduce a reduction agent into the exhaust pipe element at the feed point. A baffle is arranged in the exhaust duct which divides the exhaust duct at least partially into a first passage and a second passage where the first and second passages have a respective inlet opening and are fluidically arranged in parallel. The feed point is disposed in the first passage and is shielded from the second passage by the baffle where the inlet opening of the second passage is disposed upstream of the feed point.

Abstract: The present invention relates to a heat recovery device particularly suitable for internal combustion engines, and more particularly suitable for engines incorporating a WHRS (waste heat recovery system). The device of the invention relates to the occasional recovery of heat from the exhaust gases where the invention carries out this function such that the main conduit where the exhaust gases circulate is not affected by a noticeable increase in heat loss due to the incorporation of said device. It provides a heat exchanger (3.6) and a bypass flap valve (3.8) upstream for selectively diverting the exhaust gases to the main exhaust conduit (1) or to the heat exchanger (3.6).

Abstract: A method for producing a delivery module having an electric PTC heater, for installation into a tank for storing a liquid additive, includes: a) fixing a maximum electrical power that is made available to the delivery module; b) determining a thermal conductivity of the delivery module from a location of the electric PTC heater into the tank; c) calculating a switching temperature of the PTC heater based on the maximum electrical power and the thermal conductivity; and d) mounting a PTC material with a corresponding switching temperature for the PTC heater at the location.

Abstract: A method for operating a device for providing a liquid additive having at least one suction point for removing liquid additive from a tank, a valve-free conveying line extending from the suction point to a supply unit, and a valve-free displacement pump, the displacement pump being configured to convey the liquid additive from the tank via the suction point along the conveying line to the supply unit, the displacement unit having at least one seal of the conveying line, displaceable along the conveying line for conveying the liquid additive, includes: a) detecting a stoppage of operation of the device; b) establishing a position of the seal within the positive-displacement pump; and c) changing the position of the seal if the position of the seal does not correspond to a provided park position of the seal.

Abstract: A method and system for controlling an exhaust gas flow in an engine system are provided. The method includes detecting operating conditions of an engine and operating a valve that is disposed on a line bypassing a catalyst unit based on the operating conditions such that exhaust gas bypasses the catalyst unit. The operating conditions include a vehicle speed, an engine rotation speed, a fuel injection amount, an accelerator pedal signal, a coolant temperature, or a lambda value of exhaust gas.

Abstract: An intermediate phase adjustment apparatus of intermediate phase continuous variable valve timing includes chambers and a diverter valve balancing oil pressure between the chambers. The chamber includes an advancing chamber and a retarding chamber formed between a rotor and a stator and supplied with oil through an oil channel. The diverter valve balances oil pressure between the chambers by sliding along an oil line through which the oil moves only in one direction between the chambers so that the oil selectively moves from a chamber having higher pressure to a chamber having lower pressure due to a pressure difference.

Abstract: A direct fuel injection internal combustion engine fluidly coupled to an exhaust aftertreatment system is described and includes a plurality of fluidly coupled exhaust purifying devices and an exhaust gas sensor. A method of controlling the engine includes, activating, via a heater controller, a heating element of the exhaust gas sensor in response to starting the internal combustion engine. An exhaust gas feedstream is monitored to determine a temperature of the exhaust gas sensor. Engine control to effect heating of one of the exhaust purifying devices is permitted only when a temperature of the exhaust gas sensor is greater than a threshold temperature.

Abstract: A turbocharger (1) in which the bearing-housing-side diffuser wall is thermally decoupled in order to reduce the heat introduction at the bearing housing cover (5). The turbocharger (1) includes a turbine (2), a compressor (3) which has a diffuser, and a bearing housing (4) which is arranged between the turbine (2) and the compressor (3) and which has the bearing housing cover (5). The bearing housing cover (5) is composed of a material with a low thermal conductivity of at most 5 W/mK, for example a temperature-resistant plastic.

Abstract: An exhaust-gas turbocharger (1), with: a turbine housing (2) which has a turbine housing inlet (8) and a turbine housing outlet (9) for exhaust gas, and which has a wastegate duct between the turbine housing inlet (8) and the turbine housing outlet (9), and a flap arrangement (10) comprising a pivotable flap lever (12), a flap plate (11), which is connected to the flap lever (12), for opening and closing the wastegate duct, and having a spring element (17) which is arranged between the flap lever (12) and a disc (18) fastened to the flap plate (11). The spring element (17) has an outer circumferential region (23) which is supported on a sliding contact surface (20), which is of curved form, of the flap lever (12).

Abstract: Methods and systems are provided for a compressor bypass passage. In one example, a method may include flowing bypassed charge air through an annular passage into an intake passage.

Abstract: An assembly unit 1 of an exhaust system has at least one and particularly two connection funnels 2 made of cast material and a pipe 3. The at least one connection funnel 2 has a pipe socket 21 and at least one bracket 22. The bracket 22 is arranged outside of the pipe socket 21. A connection section 31 of the pipe 3 is fastened to the bracket 22 of the at least one connection funnel. The pipe socket 21 extends beyond the connection section 31 of the pipe 3 into the interior of the pipe 3 and is spaced apart from an inner wall of the pipe 3 by at least the simple wall thickness of the pipe 3.

Abstract: A turbomachine system according to an embodiment includes: a gas turbine system including a compressor component, a combustor component, and a turbine component; a mixing area for receiving an exhaust gas stream produced by the gas turbine system; a fluid injection system for injecting a fluid into the mixing area to reduce a temperature of the exhaust gas stream; and an exhaust processing system for processing the reduced temperature exhaust gas stream.

Abstract: Methods and systems are provided for engine speed flare control in an engine system having multiple staged charge boosting devices. In one example, during an engine start, an upstream compressor is rotated backwards via an electric motor to reduce the intake manifold pressure. The engine is then fueled based on the lower manifold pressure to reduce torque and engine speed flare until idle engine speed conditions are reached.

Abstract: A fuel supply system is provided having a first fuel gas compressor configured to be driven by a motor and a second fuel gas compressor configured to be driven by a shaft of a gas turbine system. The first fuel gas compressor and the second fuel gas compressor are configured to supply a pressurized fuel flow to a combustor of the gas turbine system, and the first fuel gas compressor and the second fuel gas compressor are coupled to one another in series.

Abstract: Systems and methods are described for sensing particulate matter in an exhaust system of a vehicle. An example system comprises a particulate matter sensor and a guiding plate spaced away from each other in a tube capable of receiving a portion of exhaust gas in an exhaust passage.