Abstract: A power plant is provided and may include an exhaust gas recirculation passage and a turbo machine having a first turbine rotationally coupled to a pump. The first turbine may include an expanded air passage. The pump may be arranged in the exhaust gas recirculation passage. A pre-cooler may be arranged in the expanded air passage and in the exhaust gas recirculation passage upstream from the pump.

Abstract: A heat exchanger for the air supply circuit of a motor vehicle engine includes a heat exchange core and at least one header tank. The heat exchanger also includes an air flow rate control valve arranged in the header tank of the exchanger, and the control valve is a valve that includes a body with three openings and a moving rotary member inside the body so as to control the circulation of air through the heat exchange core and/or through a duct bypassing the heat exchange core according to a law defined as a function of the angular position of the rotary member in the body.

Abstract: Disclosed is an exhaust system part having a high corrosion resistance, an EGR cooler using the exhaust system part, and a method of nitriding the exhaust system part. The exhaust system part made of a stainless steel and having an exhaust gas of an internal combustion engine flow therein, includes an upstream side end portion through which the exhaust gas is introduced, a downstream side end portion through which the exhaust gas is discharged, and a wall portion formed in an annular shape extending in the direction of the exhaust gas flow and disposed between the upstream side end portion and the downstream side end portion, in which a chromium oxide nitride film consisting of CrOxNy is formed on the inner peripheral surface of the wall portion.

Abstract: A heat exchanger (10) is provided and in a highly preferred form is an EGR cooler (52) having first and second passes (56A,56B) that are connected to an inlet/outlet manifold (70) by a pair of corresponding thermal expansion joints (87,93) to allow differential thermal expansion between the various structural components of the heat exchanger (10).

Abstract: A combined emission control device and exhaust gas heat exchanger for connection to the exhaust gas flow from an engine of a motor vehicle is disclosed having a number of exhaust gas transfer passages and a number of coolant passages so as to permit heat to be transferred from exhaust gas flowing through the exhaust gas heat exchanger to coolant used to supply heating for a cabin of the motor vehicle. The exhaust gas heat exchanger includes a tapping to permit cooled exhaust gas to be extracted for use in a Low Pressure Exhaust Gas Recirculation system. The exhaust gas heat exchanger thereby provides dual functionality being able to recuperate heat for use in a cabin heater and cool exhaust gas for use in the Low Pressure Exhaust Gas Recirculation system.

Abstract: In an internal combustion engine and a method of operation the internal combustion engine which includes a high pressure and a low pressure turbocharger having exhaust gas turbines arranged in series in an engine exhaust line provided with a high pressure exhaust gas recirculation line and a low pressure exhaust gas recirculation line via which exhaust gas can be conducted to an inlet line of the engine, the arrangement is switchable depending on the engine speed between an exhaust gas recirculation by way of the high pressure line and an exhaust gas recirculation by way of both, the high pressure and the low pressure line, to achieve low emissions and low fuel consumption.

Abstract: An exhaust system is disclosed for use with an engine. The exhaust system may have a first exhaust manifold associated with a first plurality of engine cylinders, and a second exhaust manifold associated with a second plurality of engine cylinders. The exhaust system may also have a first exhaust gas recirculation passage extending from the first exhaust manifold to the first plurality of engine cylinders, and a second exhaust gas recirculation passage extending from the first exhaust manifold to the second plurality of engine cylinders. The exhaust system may additionally have a first cooler located in fluid communication with the first exhaust gas recirculation passage, and a second cooler located in fluid communication with the second exhaust gas recirculation passage.

Abstract: A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine and a compressor having a fresh air inlet fluidly coupled to ambient and to an air outlet of an electric air pump. An air pump enable value as determined a function of target engine speed and total fuel target values and an air flow target is determined as a function of a target fresh air flow value. Operation of the electric air pump is activated to supply supplemental air flow to the fresh air inlet of the compressor if the air pump enable value is greater than a threshold air pump enable value and the air flow target does not exceed a maximum flow value.

Abstract: Disclosed herein is a heat exchanger with a housing casing, a first base and a second base with openings, pipes as a first flow channel for conducting a first fluid, the ends thereof being arranged in or on the openings of the first and second bases, the pipes and the first and/or the second base are arranged within the housing so that a second flow channel for conducting a second fluid is designed between the housing and the pipes, a first inlet opening for the first fluid, a first outlet opening for the first fluid, a second inlet opening for the second fluid, a second outlet opening for the second fluid, a first diffusor for directing the first fluid into the pipes, a second diffuser for directing the first fluid out of the pipes, which heat exchanger should be simple and cost-effective to produce and ensure reliable operation.

Abstract: Methods and systems are provided for controlling and coordinating control of a post-catalyst exhaust throttle and an EGR valve to expedite catalyst heating. By closing both valves during an engine cold start, an elevated exhaust backpressure and increased heat rejection at an EGR cooler can be synergistically used to warm each of an engine and an exhaust catalyst. The valves may also be controlled to vary an amount of exhaust flowing through an exhaust venturi so as to meet engine vacuum needs while providing a desired amount of engine EGR.

Abstract: A method is provided for operating an Exhaust Gas Recirculation (EGR) system of a thermal energy source, the EGR system includes, but is not limited to an EGR circuit and an EGR cooler, the EGR cooler connected in a heat exchanging relationship with an EGR coolant circuit equipped with an EGR coolant pump. The method includes, but is not limited to monitoring a parameter (TEGRcool) representative of a temperature of the coolant in the EGR coolant circuit, operating the EGR coolant pump on the basis of the parameter (TEGRcool) and of a target value thereof (TEGRtgt).

Abstract: In an anti-freezing device for an EGR device 14 with an EGR cooler 12 being provided midway of an EGR pipe 11 for extraction and recirculation of a part of exhaust gas from an exhaust side to an intake side, a downstream EGR pipe 11b downstream of the EGR cooler 12 being connected through a flange section 15 to an EGR valve 13, the flange section 15 is provided with a warm-water passage 16 to and from which engine warm water 22 is guided through warm-water conduits 23 and 24.

Abstract: Disclosed is a power system comprising a mount, a heat exchanger, and a corrugated strap positioned about the heat exchanger for securing the heat exchanger to the mount. The heat exchanger comprises a separation edge, and the corrugated strap may comprise a first corrugated section and a second corrugated section. A separation bend may be positioned between the first corrugated section and the second corrugated section, and the separation bend may overlap the separation edge.

Abstract: An exhaust gas recirculation valve device for a vehicle includes a valve housing having an exhaust gas inlet port and an exhaust gas outlet port, a flap valve rotatably mounted on the valve housing to open and close the exhaust gas outlet port, and a valve shaft fitted to penetrate the flap valve and coupled to the flap valve by electron beam welding to rotate integrally with the flap valve.

Abstract: A method includes detecting a presence of a fouling layer in an exhaust gas recirculation cooler of an internal combustion engine. The flow of a coolant through the exhaust gas recirculation cooler is stopped for a predetermined period of time while the engine exhaust gas flows through the exhaust gas recirculation cooler. The flow of an engine exhaust gas exiting from the exhaust gas recirculation cooler is diverted to at least one of a turbine of a turbocharger, and an exhaust pipe of the internal combustion engine. The fouling layer from the exhaust gas recirculation cooler is expelled along with the engine exhaust gas exiting the exhaust gas recirculation cooler.

Abstract: This invention relates to an internal combustion engine and a control device for the internal combustion engine and has an object to provide an internal combustion engine and a control device therefore that can suppress occurrence of knocking if an EGR rate is increased. An EGR gas can be made to flow separately through one path via one EGR passage and an other path via another EGR passage. The EGR gas flow through the other path can be cooled by an intercooler. Since the intercooler usually has a capacity larger than that of an EGR cooler, its cooling capability is high, and the EGR gas can be made to flow into a surge tank in a state where heat of the EGR gas has been sufficiently emitted.

Abstract: Disclosed is a power system comprising an internal combustion engine. A fan is associated with the engine and configured for providing an air flow. The power system further comprises an EGR system having an air cooled, HT EGR cooler configured for cooling recirculated exhaust gas, wherein the HT EGR cooler is positioned downstream of the internal combustion engine. The HT EGR cooler is further positioned such that the air flow travels across the outside of the HT EGR cooler. The EGR system further comprises an air cooled, LT EGR cooler is configured for further cooling at least a portion of the recirculated exhaust gas, wherein the LT EGR cooler is positioned downstream of the HT EGR cooler. The LT EGR cooler is further positioned such that the air flow travels across the outside of the LT EGR cooler.

Abstract: A method of diagnosing a cooling subsystem of an engine system in response a parameter extracted from dynamic hydraulic pressure sensed in the cooling subsystem, and products and systems using same.

Abstract: A system for recirculating exhaust gas includes a cooling subsystem configured to cool the exhaust gas; a condensation removal subsystem; and a temperature adjustment subsystem. The cooling subsystem may include a first cooling component configured to cool the exhaust gas to a first intermediate temperature and a second cooling component configured to cool the exhaust gas to a temperature below the saturation temperature. The condensation removal subsystem may include a mist eliminator configured to remove condensate and particulate matter from the exhaust gas and a reheater where exhaust gas is reheated to above the saturation temperature.

Abstract: A method for improving operation of a turbocharged engine is presented. In one embodiment, the method may reduce engine emissions and improve engine efficiency during an engine start.

Abstract: An engine assembly according to the principles of the present disclosure includes an engine structure, an intake system, an exhaust system, and an exhaust gas recirculation (EGR) assembly. The engine structure defines cylinders having intake and exhaust ports. The intake system includes an intake manifold that provides air to the cylinders through the intake ports. The exhaust system includes an exhaust manifold in communication with the exhaust ports for expelling exhaust gas from the cylinders. The EGR system includes an EGR pipe, an EGR valve, an EGR reservoir, and an EGR injector. The EGR pipe extends from at least one of the exhaust system, the exhaust ports, and the cylinders to the EGR reservoir. The EGR valve regulates exhaust flow through the EGR pipe. The EGR injector is operable to deliver exhaust gas from the EGR reservoir directly to at least one of the intake ports and the cylinders.

Abstract: The invention relates to a motor vehicle having an internal combustion engine and an exhaust gas system, which comprises an exhaust gas line by means of which the exhaust gas can be removed from the internal combustion engine, as well as an exhaust gas recirculation line by means of which the exhaust gas can be recirculated into the internal combustion engine from the exhaust gas line. The exhaust gas recirculation line has an exhaust gas cooler and a condensate line for removing the condensate from the recirculated exhaust gas, wherein the condensate line is connected with a first end to the exhaust gas recirculation line downstream of the exhaust gas cooler in the direction of flow of the exhaust gas and with a second end to the exhaust gas line.

Abstract: A method for operation of a high pressure exhaust-gas recirculation (EGR) system is provided. The method includes transferring heat from an exhaust flow through an EGR cooler to an engine coolant, the EGR cooler coupled to an EGR line fluidly coupled in parallel with a turbine and directing a controlled portion of the exhaust flow from the EGR cooler to an engine intake. The method further includes directing another controlled portion of the exhaust flow from the EGR cooler to the surrounding atmosphere.

Abstract: A waste heat recovery (WHR) system connects a working fluid to fluid passages formed in an engine block and/or a cylinder head of an internal combustion engine, forming an engine heat exchanger. The fluid passages are formed near high temperature areas of the engine, subjecting the working fluid to sufficient heat energy to vaporize the working fluid while the working fluid advantageously cools the engine block and/or cylinder head, improving fuel efficiency. The location of the engine heat exchanger downstream from an EGR boiler and upstream from an exhaust heat exchanger provides an optimal position of the engine heat exchanger with respect to the thermodynamic cycle of the WHR system, giving priority to cooling of EGR gas. The configuration of valves in the WHR system provides the ability to select a plurality of parallel flow paths for optimal operation.

Abstract: The invention relates to a method for operating an internal combustion engine, a turbine of an exhaust gas turbocharger situated in an exhaust system of the internal combustion engine being driven by exhaust gas from the internal combustion engine, and a compressor of the exhaust gas turbocharger powered by the turbine and situated in a combustion air system of the internal combustion engine compressing combustion air, exhaust gas being diverted in a high pressure exhaust gas recirculation loop upstream from the turbine and mixed with the combustion air downstream from the compressor, exhaust gas being diverted in a low pressure exhaust gas recirculation loop downstream from the turbine and mixed with the combustion air upstream from the compressor, exhaust gas being purified by a low pressure exhaust gas recirculation filter in the LP-EGR loop, a predetermined value for a total exhaust gas recirculation flow.

Abstract: An exhaust gas cooler may include an outer housing and an inner housing having a heat exchanger insert arranged therein. The heat exchanger insert may include a plurality of pipes around which exhaust gas flows transversely in the inner housing and through at least some of which a coolant of a first cooling circuit flows. At least a portion of the outer housing may be cooled by a second cooling circuit. The second cooling circuit may be separate from the first cooling circuit.

Abstract: Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended.

Abstract: One embodiment includes a housing (12) and a valve (10) to be used in an internal combustion engine exhaust breathing system (14). The housing (12) may define one or more inlet passages that receive fluid-flow, and may also define one or more outlet passages that deliver fluid-flow. The valve (10) regulates fluid-flow through the housing (12) and between the passages.

Abstract: Disclosed is a power system comprising a condensation injection system positioned downstream of an EGR cooler. The condensation injection system comprises a condensation pump and a condensation injector. The condensation injector is positioned downstream of the condensation pump. The condensation pump is configured to pump the condensation to the condensation injector, and the condensation injector is configured to inject the condensation into the intake gas, the intake gas being a combination of a fresh intake gas and a recirculated portion of an exhaust gas.

Abstract: Various systems and methods are described for operating an engine system having a sensor coupled to an exhaust gas recirculation system in a motor vehicle. One example method comprises during a first operating condition, directing at least some exhaust gas from an exhaust of the engine through the exhaust gas recirculation system and past the sensor to an intake of the engine and, during a second operating condition, directing at least some fresh air through the exhaust gas recirculation system and past the sensor.

Abstract: A method includes combusting air within a plurality of cylinders of an internal combustion engine by injecting a fuel into the plurality of cylinders. The method further includes expanding a first portion of an exhaust gas generated from the plurality of combustion cylinders via a turbine. The method further includes controlling at least one of feeding a second portion of the exhaust gas via an exhaust channel bypassing the turbine; and recirculating a third portion of the exhaust gas to the plurality of combustion cylinders via a recirculation channel, as a function of an intake manifold air temperature and pressure at which the engine is operated.

Abstract: Engine coolant heating systems and methods that improve waste heat recovery. The systems and methods include a piped connection between the outlet of an exhaust gas recirculation cooler and the main exhaust pipe leading to the vehicle's tailpipe. The systems and methods also include at least one additional valve in the exhaust stream for directing the flow of exhaust appropriately given specific driving conditions.

Abstract: Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended.

Abstract: Embodiments for controlling condensate in an engine heat exchanger are disclosed. In one example, a method for an engine comprises increasing exhaust gas recirculation (EGR) flow responsive to condensation in an EGR cooler. In this way, condensate in the EGR cooler may be controlled via modulation of EGR flow.

Abstract: Provided is a control apparatus for an internal combustion engine, which can introduce external EGR gas during a cold condition, while favorably suppressing an occurrence of condensed water from the EGR gas. A twin entry type turbo supercharger (18) is provided. A first exhaust passage (14a) through which first exhaust gas exhausted from a first cylinder group (#2 and #3) and a second exhaust passage (14b) through which second exhaust gas exhausted from a second cylinder group (#1 and #4) are provided. A sub cooling system including a sub cooling passage (32) for cooling the first exhaust passage (14a) is provided. A main cooling system including a main cooling passage (30) for cooling the second exhaust passage (14b) is provided. An EGR passage (24) connected between the first exhaust passage (14a) and an intake passage (12), and an EGR valve (26) playing a role in opening and closing the EGR passage (24) are provided.

Abstract: An arrangement for a supercharged combustion engine includes a first compressor compressing air in the engine air inlet line as a first stage and a second compressor compressing the air in the inlet line as a second stage, a first coolant-cooled charge air cooler cooling the air after it has been compressed in the first stage and before it is compressed in the second stage, and an air-cooled charge air cooler cooling the compressed air when it has been compressed by the first stage, a second coolant-cooled charge air cooler cooling the compressed air after it has been compressed in the second stage and before it is compressed in the air-cooled charge air cooler. Exhaust gases in an exhaust line from the engine drive turbines which operate the compressors. A return line from the exhaust line and connected into the inlet line has a cooler for the exhaust gases before mixing the gases with the inlet air.

Abstract: An exhaust gas cooler assembly with an internally located bypass tube, spaced apart from and disposed within a core passage, with an exhaust gas inlet manifold directing exhaust gas to a plurality of cooling passages, or to the bypass tube by means of control valves. Further provided is a detachable valve cartridge with an actuator, with all moving components being included within the valve cartridge and actuator.

Abstract: An EGR (Exhaust Gas Recirculation) cooler apparatus for a vehicle may include a main cooling unit that may be disposed on an EGR line recirculating exhaust gas from an exhaust manifold to an intake manifold to cool the exhaust gas through coolant, a valve assembly that may be connected to the main cooling unit to control exhaust gas flowing rate supplied to the main cooling unit, and a sub cooling unit that may be integrally formed on the main cooling unit and cools down the exhaust gas that may be to be supplied to the valve assembly.

Abstract: Disclosed is an exhaust gas supply pipe for an EGR cooler of a vehicle, and more particularly, to an exhaust gas supply pipe for an EGR cooler of a vehicle, which is capable of improving an initial mounted state through a bellows and also of preventing damage caused by high exhaust heat. To this end, the present invention provides an exhaust gas supply pipe for an EGR cooler of a vehicle, including: a left pipe connected to an exhaust manifold of an engine; a right pipe connected to an EGR cooler; a bellows connecting the left pipe and the right pipe to each other and disposed at an outer periphery of the left pipe; and a heat blocking material filled in a space between the outer periphery of the left pipe and an inner periphery of the bellows.

Abstract: The invention relates to a method for discharging liquid from an intake tract of a turbocharger arrangement including a charge air cooler. As such, a charge air cooler may include a liquid collector including a switchable valve downstream of a charge air cooler. The switchable valve may be adjusted following the determination of an opening frequency and an opening duration based on a liquid collector temperature and a liquid collector pressure.

Abstract: An air intake tract arrangement for an internal combustion engine includes an exhaust gas inlet device arranged at the inlet side of a charge air cooler and configured to direct injected EGR exhaust gas substantially in a direction towards an inlet of said charge air cooler, thereby enabling the use of plastic intake tract components.

Abstract: Transmission fluid is heated through a heat exchanger effective to transfer heat between transmission fluid of a transmission assembly and an exhaust gas feed stream of an engine.

Abstract: Methods and systems are provided for draining water separated from diesel fuel into an EGR system. In response to the water volume in the fuel system and EGR flow at pre-determined levels, water may be introduced into the EGR system. EGR flow may also be controlled in response to introducing water into the EGR system and engine operating conditions.

Abstract: A heat exchanger (5) includes a housing (31), which contains a tube (32) and has a jacket (33), which surrounds the tube (32) while forming a ring channel (34). A primary inlet (35) and a primary outlet (36) are fluidically connected with one another via a primary path (37) carrying a primary medium through the ring channel (34) and via a bypass path (38) carrying the primary medium through the tube (32). A control (39) controls the flow of the primary medium through the primary path (37) and through the bypass path (38). At least two secondary inlets (42) and two secondary outlets (43) are fluidically connected with one another via at least two secondary paths (44) for carrying at least one secondary medium. The primary path (37) is coupled with the secondary paths (44) in a heat-transferring manner and such that the media are separated from one another.

Abstract: A heat exchanger (5) includes a housing (31), which contains a tube (32) and has a jacket (33), which surrounds the tube (32) while forming a ring channel (34). A primary inlet (35) and a primary outlet (36) are connected to one another fluidically via a primary path (37) carrying a primary medium through ring channel (34) and via a bypass path (38) carrying the primary medium through the tube (32). A control device (39) controls the flow of the primary medium through the primary path (37) and the bypass path (38). A secondary inlet (42) and a secondary outlet (43) are connected to one another fluidically via at least two secondary paths (44) for carrying a secondary medium. The primary path (37) is coupled with the secondary paths (44) in a heat-transferring manner with the media separated from one another.

Abstract: The present invention provides an exhaust gas recirculation cooler for transferring heat from engine exhaust to coolant including a pair of spaced apart headers, a tube body extending between the pair of headers and positioned along a flow path for the coolant and at least partially defining a flow path for the engine exhaust along a length of the tube between the pair of headers, and a corrugated insert supported in an interior of the tube and having a height in a direction of a plurality of corrugations and a width between about 8.6 and about 13.5 times the height. The width can be substantially perpendicular to the length of the tube and can be substantially perpendicular to the height of the insert.

Abstract: An exhaust gas recirculation cooler for internal combustion engines and a method of forming same. One or more cooler tubes incorporate a flexible section, comprised of one or more integrally formed convolutions, with a tube and fin architecture. The exhaust gas recirculation cooler provides thermal compensation, on a per-tube basis, with the flexible sections of the one or more cooler tubes individually displacing upon the thermal expansion of any of the respective tubes.

Abstract: An apparatus for determining a condition of an exhaust gas recirculation (EGR) cooler of an internal combustion engine includes a clean EGR cooler module that is configured to estimate the temperature of exhaust gas exiting a clean EGR cooler. The apparatus also includes a fouled EGR cooler module that is configured estimate the temperature of exhaust gas exiting a fouled EGR cooler. Further, the apparatus includes an EGR cooler effectiveness module that is configured to determine a normalized effectiveness of the EGR cooler based on the estimated temperature of exhaust gas exiting a clean EGR cooler and the estimated temperature of exhaust gas exiting a fouled EGR cooler. Additionally, the apparatus includes an EGR cooler condition module that is configured to determine a condition of the EGR cooler based on the normalized effectiveness of the EGR cooler.

Abstract: A gas intake device for letting gases into an inlet volume of a cylinder head of a motor vehicle combustion engine includes a valve (10) for supplying the cylinder head with gas, this valve communicating with the inlet volume of the cylinder head directly and indirectly via a heat exchanger (14). The valve (10) and the heat exchanger (14) are mounted on a plate (21) intended to be mounted directly on the cylinder head. The device is compact and relatively insensitive to vibration.

Abstract: Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions.