Abstract: The present invention relates to an immersed heat dissipation device for power battery, comprising a battery heat dissipation module, a battery unit, a liquid refrigerant, a main inlet pipe and a main outlet pipe, wherein the battery heat dissipation module is a structure of sealed box that contains the liquid refrigerant, and a plurality of the battery heat dissipation modules are connected to each other and arranged in the heat dissipation device for power battery. The battery can be effectively cooled and the temperature of the battery can be effectively controlled, and ensure a uniform temperature for the battery unit, thereby improving the performance and life of the power battery of new energy vehicle.

Abstract: An exhaust manifold for use with an internal combustion engine having a first cylinder and a second cylinder. The exhaust manifold includes a first fluid path having a first inlet in fluid communication with the first cylinder of the internal combustion engine and a first outlet, a second fluid path having a second inlet in fluid communication with the second cylinder of the internal combustion engine and a second outlet, and a valve adjustable between a first configuration, in which the first fluid pathway is in fluid communication with the second fluid path, and a second configuration, in which the first fluid pathway is not in fluid communication with the second fluid pathway.

Abstract: A dual volute turbocharger for use with an internal combustion engine includes a valve for controlling exhaust gas flow to a turbine housing interior of the dual volute turbocharger. The dual volute turbocharger also includes a first volute and a second volute each adapted for fluid communication with the internal combustion engine. The dual volute turbocharger further includes a wall separating the first and second volutes and a valve seat. The valve seat and the wall collectively define a valve cavity. The valve is movable between a closed position and an open position. The valve and the wall of the turbine housing collectively define a first cross-sectional flow area. The valve and the valve seat collectively define a second cross-sectional flow area. A method of controlling the valve of the dual volute turbocharger is also disclosed.

Abstract: An operation system for a piston-type expander includes: a first engaging member which is fixed to an output shaft of the piston-type expander, rotates together with the output shaft, and has a first slanting surface; a second engaging member which is rotatably disposed on the output shaft, and has a second slanting surface; and a drive device which, while keeping a rotation direction of the second engaging member around the output shaft fixed, moves the second engaging member in an axial direction of the output shaft to press the second slanting surface onto the first slanting surface, converts a pressing force of the second engaging member in the axial direction into a rotational torque of the first engaging member and the output shaft at a contact surface of the first and second slanting surfaces, and causes the first engaging member to rotate together with the output shaft.

Abstract: Methods and systems for adjusting a branch communication valve in a dual scroll turbocharger system are provided. In one example, a method may include adjusting a position of a valve arranged between a first adaptor and a second adaptor to enable mixing of exhaust received from an exhaust manifold, the exhaust delivered to a first scroll and a second scroll of a turbocharger to drive a turbine during certain engine operating conditions.

Abstract: A control method of a waste heat recover device, the control method includes measuring a first state value of an organic refrigerant discharged from an organic refrigerant evaporator by a first state value measuring unit; determining whether the first state value measured by the first state value measuring unit deviates from a first set range and controlling a flow rate of an organic refrigerant introduced into the organic refrigerant evaporator by a first organic refrigerant variable valve when it is determined that the first state value deviates from the first set range.

Abstract: A method for controlling a heat recovery device in an internal combustion engine, in particular, for a motor vehicle. The heat recovery device is provided with a circuit for a working medium having an evaporator of an expansion machine that is arranged in an exhaust gas flow path of the internal combustion engine, a condensor, an expansion tank, and a feed pump. The working temperature of the working medium is controlled by varying the mass flow of the working fluid as a function of at least one operating parameter. A setpoint value of the working medium mass flow of an exhaust gas flow path of an exhaust gas tract and/or an exhaust gas recirculation line is calculated on the basis of a base setpoint value for the working medium mass flow. The base setpoint value for the working medium mass flow is at least a function of the exhaust gas temperature, preferably upstream of the evaporator, and of the exhaust gas mass flow in the exhaust gas flow path.

Abstract: An exhaust gas turbocharger housing (10) for an engine includes a main turbine housing portion (14) and a throat portion (12) defining an exhaust gas passageway (20) that is in upstream fluid communication with the main turbine housing. The exhaust passageway (20) communicates exhaust gases (EG) to the main turbine housing portion (14). A flow divider (22) generally bisects the exhaust gas passageway (20) forming a first inlet passageway (24A) and a second inlet passageway (24B). A flow hole (26) is disposed through the flow divider (22) for permitting the fluid communication of exhaust gas (EG) from the first inlet passageway (24A) to the second inlet passageway (24B).

Abstract: Embodiments as described herein provide a simplified turbo recharger for an efficient, reliable, low-cost system that delivers good performance for improving efficiency of a vehicle using electric power. Embodiments as described herein may be used with electric motor, combustion engine hybrid vehicles to improve the fuel efficiencies of such vehicles. A turbine may be positioned in an exhaust stream of a vehicle that is coupled to a generator to recharge the battery of a vehicle. The turbine may include a wastegate to permit the exhaust stream to enter or bypass the turbine depending on the charge of the battery, the rate of rotation of the turbine, pressure within the turbine, the speed of the engine, or a combination of the above.

Abstract: An electromagnetic clutch (4) which serves for connecting a steam engine (2) to a combustion engine (3), wherein a first shaft (8) which can be driven by the steam engine (2) and a second shaft (9) which can be driven by the internal combustion engine (3) are provided, wherein an intermediate gear (23) which is connected to the first shaft (8) and a clutch bell (26) which is at least indirectly connected to the second shaft (9) are provided, wherein a freewheel (27) is provided between the intermediate gear (23) and the clutch bell (26).

Abstract: A system and method for recuperation is provided including a boiler wherein air and exhaust gas recirculation pass through the boiler and are cooled by thermal transfer with a coolant. The system includes an expander receiving coolant from the boiler, a recuperator receiving coolant from the expander, a condenser receiving coolant from the recuperator; a pump pumping coolant from the condenser to a low temperature portion of the boiler, and a valve, which allows coolant to pass directly from the boiler to the recuperator.

Abstract: In a waste heat utilization arrangement for an internal combustion engine of a motor vehicle including a waste heat utilization circuit in which a working medium is circulated, a pumping device for pressurizing the working medium, an evaporator for vaporizing the working medium by waste heat of the internal combustion engine, an expansion machine for expanding the working medium while extracting mechanical energy therefrom and a condenser for condensing the working medium in a resting state, the waste heat utilization circuit is in communication with a pressure store capable of maintaining a pressure for setting and ensuring a predetermined adjustable minimum pressure of the working medium in the waste heat utilization circuit.

Abstract: Systems and method for extracting energy from a gas are disclosed herein. In particular, systems and methods for implementing a series of thermodynamic transformations by means of which it is possible to extract useful work from a gas carrying thermal energy due its thermodynamic state are disclosed. An example system for extracting energy from a cycle gas can include an expander for expanding the cycle gas, a heat exchanger in fluid connection with the expander for cooling the expanded cycle gas while maintaining the expanded cycle gas at an approximately constant pressure, and a compressor in fluid connection with the heat exchanger for compressing the cooled cycle gas.

Abstract: An exhaust heat recovery device provided with a Rankine cycle, capable of achieving improvements in start-up performance of the Rankine cycle and an efficient operation (actuation) of the Rankine cycle. An exhaust heat recovery device 1 that recovers and uses exhaust heat of an engine 10 includes: a Rankine cycle 2 including a heater 22, an expander 23, a condenser 24, and a pump 25; a bypass flow passage 26 that allows refrigerant to circulate while bypassing the expander 23; a bypass valve 27 that opens and closes the bypass flow passage 26; and a control unit 4. When starting up the Rankine cycle 2, the control unit 4 executes control to actuate the pump 25 with the bypass valve 27 open, and then to close the bypass valve 27 when a parameter indicating the condensation capacity of the condenser 24 becomes a predetermined value or more.

Abstract: Systems and methods for operating an engine that includes an exhaust gas heat recovery system are described. The system may selectively or contemporaneously supply energy from engine exhaust gas to generate electricity or warm the engine. In one example, exhaust gas energy raises a temperature of a heat transfer medium and the heat transfer medium is routed to an engine coolant heat exchanger or an expander via a bypass valve.

Abstract: A waste heat utilization apparatus is provided with a Rankine cycle and a power transmission mechanism that transmits power regenerated by an expander to an engine. The power transmission mechanism includes an expander clutch that interrupts or permits The transmission of the power from to expander to the engine. The expander includes a rotational speed sensor that detects a rotational speed of the expander. An increase in friction of the expander is detected on the basis of an increase in the rotational speed of the expander detected by the rotational speed sensor when the expander clutch is disconnected.

Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.

Abstract: A heat recovery system for an internal combustion engine may include a heat transfer device flowed through by a fluidic heat carrier for transferring the heat from a combustion exhaust gas of the internal combustion engine to the heat carrier, a heat power machine flowed through by the heat carrier for converting the heat transferred to the heat carrier into mechanical work, a substantially cyclically closed duct system for connecting the heat transfer device with the heat power machine, at least one displacement pump for conveying the heat carrier through the duct system in a predetermined flow direction, and a pump drive for driving the displacement pump. A reduced wear may result when the heat recovery system is supplemented by an impermeable separating membrane for the fluid-tight separation of the heat carrier from the pump drive.

Abstract: A flow control device for a turbocharger (100) includes a flow restrictor (102) with a variable position for variably restricting flow in a turbocharger inlet. A controller (312) controls the position of the flow restrictor based on sensed pressure (300) in the turbocharger inlet (301).

Abstract: The present invention relates to an internal combustion engine and operating method. The internal combustion engine includes a fresh air system for the supplying of fresh air to at least one combustion chamber; an exhaust gas system for the carrying away of exhaust gas from the at least one combustion chamber; an exhaust gas recycling system for the recycling the exhaust gas from the exhaust gas system into the fresh air system; and at least one additional valve, configured in the fresh air system upstream of at least one inlet valve associated with the at least one combustion chambers. A control device is configured to actuate at least one additional valve such that at least one of a particle content in the exhaust gas and a fuel consumption of the internal combustion engine are at least one of optimum and optimal comprise for at least one environmental parameter.

Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.

Abstract: Route guidance devices, methods, and programs provide guidance for a vehicle that is provided with a drive motor and an engine as drive sources. The devices, methods, and programs acquire a departure point and a destination for the vehicle and specify one or more motor drive recommended links for which driving with the drive motor as the drive source is recommended. The devices, methods, and programs specify a route that includes only motor drive recommended links and by which the vehicle can drive from the departure point to the destination using only the drive motor as the drive source and output the specified route on a display.

Abstract: A waste heat utilization apparatus of a first embodiment includes a driving system including an engine and a turbocharger supplying pressurized air to the engine, and a Rankine cycle system used for the driving system. The Rankine cycle system includes a coolant boiler causing heat exchange between coolant as heating medium and working fluid, and a pressurized air boiler causing heat exchange between the pressurized air as heating medium and the working fluid. A first bypass channel for allowing the working fluid to bypass the coolant boiler and a three-way valve are provided in the Rankine cycle system. In the waste heat utilization apparatus, the amount of heat absorbed in the working fluid in the coolant boiler can be reduced by flowing the working fluid into the first bypass channel.

Abstract: In a waste-heat recovery system, a gear pump and an electric motor share a drive shaft. A pump interior portion and a motor interior portion are partitioned from each other by a shaft seal, and the pump interior portion defines a part of a circulation path of a Rankine cycle circuit. One end of a communication path that is communicated to the motor interior portion is connected to a bottom portion of a housing, and the other end of the communication path is connected to the circulation path at a position between an expander and a condenser in the Rankine cycle circuit.

Abstract: Embodiments as described herein provide a simplified turbo recharger for an efficient, reliable, low-cost system that delivers good performance for improving efficiency of a vehicle using electric power. Embodiments as described herein may be used with electric motor, combustion engine hybrid vehicles to improve the fuel efficiencies of such vehicles. A turbine may be positioned in an exhaust stream of a vehicle that is coupled to a generator to recharge the battery of a vehicle. The turbine may include a wastegate to permit the exhaust stream to enter or bypass the turbine depending on the charge of the battery, the rate of rotation of the turbine, pressure within the turbine, the speed of the engine, or a combination of the above.

Abstract: In a method for recovering energy from the heat dissipated by an internal combustion engine and to an internal combustion engine wherein the pressure and temperature of a liquid working medium are increased from a lower process pressure and a first temperature to an upper process pressure at which the working fluid is heated to a second temperature whereby it is converted to a gaseous phase; the working medium is then expanded back to the lower process pressure whereby mechanical power is generated and the working medium is converted back to a liquid phase, the upper process pressure being adjusted in such a way that the working medium is expanded into the wet steam area close to the saturated steam limit.

Abstract: In a method for regulating a boost pressure of an engine which has a compressor, an actual boost pressure and a setpoint boost pressure are used as input parameters. The setpoint boost pressure is regulated in such a way that a pressure ratio in the compressor does not exceed a limit pressure ratio. A reference boost pressure is ascertained based on a speed of the engine and a load of the engine. A flow and/or a pressure of air supplied to the engine is/are detected and an associated flow signal and/or pressure signal is generated. The smaller of the reference boost pressure and a limit boost pressure is used as a setpoint boost pressure. The limit boost pressure is ascertained based on a limit boost pressure ratio and a speed of the compressor.

Abstract: An engine-waste-heat utilization device includes a Rankine cycle which includes a heat exchanger through which cooling water coming out from an engine flows to recover waste-heat of the engine to refrigerant, an expander which generates power using the refrigerant coming out from the heat exchanger, a condenser which condenses the refrigerant coming out from the expander and a refrigerant pump which supplies the refrigerant coming out from the condenser to the heat exchanger, and a cooling water passage in which the cooling water having a higher temperature flows when the Rankine cycle is operated than when the Rankine cycle is not operated.

Abstract: The disclosure provides a waste heat recovery (WHR) system including a Rankine cycle (RC) subsystem for converting heat of exhaust gas from an internal combustion engine, and an internal combustion engine including the same. The WHR system includes an exhaust gas heat exchanger that is fluidly coupled downstream of an exhaust aftertreatment system and is adapted to transfer heat from the exhaust gas to a working fluid of the RC subsystem. An energy conversion device is fluidly coupled to the exhaust gas heat exchanger and is adapted to receive the vaporized working fluid and convert the energy of the transferred heat. The WHR system includes a control module adapted to control at least one parameter of the RC subsystem based on a detected aftertreatment event of a predetermined thermal management strategy of the aftertreatment system.

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: In a case of a refrigerant amount being short when a Rankine cycle starts operating, because the pressure difference does not occur across a refrigerant pump, refrigerant cannot be injected from a bypass circuit to the Rankine cycle, and therefore super-cooling degree cannot be controlled. An exhaust heat recovery system is provided that can adjust the super-cooling degree even in the case of the pressure difference not occurring across the refrigerant pump. The system includes a refrigerant tank, for storing refrigerant, which is connected by pipes to the low-pressure circuit side and the high-pressure circuit side of the Rankine cycle through a low-pressure-side valve and a high-pressure-side valve, respectively, and a temperature adjuster for adjusting internal temperature of the refrigerant tank.

Abstract: The disclosure provides a waste heat recovery system and method in which pressure in a Rankine cycle (RC) system of the WHR system is regulated by diverting working fluid from entering an inlet of an energy conversion device of the RC system. In the system, an inlet of a controllable bypass valve is fluidly coupled to a working fluid path upstream of an energy conversion device of the RC system, and an outlet of the bypass valve is fluidly coupled to the working fluid path upstream of the condenser of the RC system such that working fluid passing through the bypass valve bypasses the energy conversion device and increases the pressure in a condenser. A controller determines the temperature and pressure of the working fluid and controls the bypass valve to regulate pressure in the condenser.

Abstract: An exhaust purification system is provided that can decrease the load acting on a device treating PM, even when switched to stoich operation. The exhaust purification system includes: a PM treatment device, a three-way purification catalyst, an LAF sensor, and an ECU (3) that performs feedback control so that an LAF sensor output (Vex) becomes a target value (Vop) determined so that the three-way purification reaction is optimized during stoich operation. The ECU (3) includes a fuel controller (32) that determines a fuel injection amount (Gfuel) so that a state in which an air/fuel ratio of the air/fuel mixture is leaner than stoich and a state richer than stoich are alternately realized by modulating a fuel correction amount (dGfuel) determined so as to cause the LAF sensor output (Vex) to converge to the target value (Vop) by employing a predetermined modulation algorithm.

Abstract: A system includes a heat exchanger and a fluid flow control module. The heat exchanger includes a substrate, a catalyst applied to the substrate, and fluid passages. Exhaust gas from an engine flows through the heat exchanger and a working fluid in the fluid passages absorbs heat from the exhaust gas. The fluid flow control module controls fluid flow from the heat exchanger based on a temperature of the catalyst.

Abstract: The coolant in the cooling jacket of a dual cycle internal combustion steam engine is intentionally maintained at an elevated temperature that may typically range from about 225° F.-300° F. or more. A non-aqueous liquid coolant is used to cool the combustion chamber together with a provision for controlling the flow rate and residence time of the coolant within the cooling jacket to maintain the temperature of the coolant at a selected elevated temperature that is substantially above the boiling point of water but below the boiling point of the coolant. The coolant is passed from the jacket through a heat exchanger in a first circuit to transfer heat to a vaporizable working fluid such as water and is then returned. An optional second circuit is an intrajacket perturbation circuit within the engine can be used to disrupt and disperse pockets of vapor that may tend to form before damaging hot spots can develop around the combustion chamber.

Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.

Abstract: In a waste heat utilization arrangement for an internal combustion engine of a motor vehicle including a waste heat utilization circuit in which a working medium is circulated, a pumping device for pressurizing the working medium, an evaporator for vaporizing the working medium by waste heat of the internal combustion engine, an expansion machine for expanding the working medium while extracting mechanical energy therefrom and a condenser for condensing the working medium in a resting state, the waste heat utilization circuit is in communication with a pressure store capable of maintaining a pressure for setting and ensuring a predetermined adjustable minimum pressure of the working medium in the waste heat utilization circuit.

Abstract: In an axial piston expander for a waste heat recovery device of a motor vehicle, the expander having a shaft with an axis of rotation around which a number of cylinders are arranged parallel to, and distributed around, the axis of rotation, each cylinder including a piston connected to a coupling plate which is pivotally mounted on the shaft so as to provide for an adjustable piston stroke and the cylinders having high pressure inlets and low pressure outlets with valve devices for the control of the operating fluid flow through the cylinders, a stroke adjustment arrangement is provided by which the stroke of the pistons is adjustable via a regulation of the pressure in an operating chamber at the back side of the pistons, the waste heat recovery device being coupleable with the drive train of the internal combustion engine for the transfer of mechanical driving power.

Abstract: In a motor vehicle with an internal combustion engine providing a hot exhaust gas flow which is used as heat source for a Clausius-Rankine cycle process, wherein a pump is provided in the cycle for pumping, pressurizing and circulating an operating fluid, the pumping operation is controlled by a controller depending on the exhaust gas mass flow through an evaporator and possibly also the exhaust gas temperature to vaporize the operating fluid and expanding the vapor under pressure in an expander while generating energy. The vapor is condensed in a condenser to form a condensate which is again returned to the pump.

Abstract: The invention relates to a device and a method for the recovery of waste heat from an internal combustion engine (2), according to which a feed pump (6), a heat exchanger (8), an expansion engine (10) and a capacitor (12) are arranged in a circuit (4) containing a circulating working medium. A bypass connection (14) is mounted in parallel to the expansion engine (10), in the circuit (4), the expansion engine (10) being coupled to the circuit (4), or decoupled therefrom, according to an operating situation of the internal combustion engine (2).

Abstract: An arrangement and a method for converting thermal energy to mechanical energy includes a circulation unit (4) a refrigerant in the a circuit (3), an evaporator (6) for the refrigerant, a turbine (9) driven by vaporised refrigerant, a condenser (12) cooling the refrigerant to condense, and an accumulator tank (14) for storage of the refrigerant is not being circulated in the line circuit (3). A control device estimates the degree of filling of the line circuit (3) with refrigerant at which the turbine (9) achieves a substantially optimum effect, and controls the flow of refrigerant between the line circuit (3) and the accumulator tank (14) to achieve the estimated degree of filling the line circuit (3) with refrigerant.

Abstract: In accordance with exemplary embodiments, a Stirling engine is integrated into an exhaust system of a vehicle. The system comprises an engine coupled to a cooling system and an exhaust system. An emission control system is coupled to the exhaust system. A Stirling engine has one end coupled to the cooling system and another end selectively coupled to the exhaust system between the engine and the emission control system, and configured be driven from heat extracted from exhaust gas flow. The Stirling engine drives an electrical energy generator that provides electrical energy for storage in an energy storage system.

Abstract: An arrangement and a method for converting thermal energy to mechanical energy. The arrangement has a line circuit (3), circulation device (4) for circulating a zeotropic refrigerant mixture in the line circuit (3), an evaporator (6) in which the refrigerant mixture is vaporised by a heat source (7), a turbine (9) driven by the vaporised refrigerant mixture, and a condenser (12) which cools the refrigerant mixture so that it condenses. A control unit assesses whether the refrigerant mixture does not become fully vaporised in the evaporator (6) and, leads incompletely vaporised refrigerant mixture leaving the evaporator to a separating device (14) in which a liquid portion of the refrigerant mixture is separated from the gaseous portion, after which only the gaseous portion proceeds towards the turbine (9).

Abstract: A waste heat recovery system includes a hot gas stream flow path, a pump, an expander, a first working fluid flow path fluidly connecting a pump outlet and an expander inlet, a second working fluid flow path fluidly connecting an expander outlet and a pump inlet, a first heat exchange section that transfers heat from the hot gas stream to working fluid traveling along the first working fluid flow path, a second heat exchange that transfers heat from the hot gas stream to working fluid traveling along the first working fluid flow path between the pump and the first heat exchange section, and a third working fluid flow path fluidly connecting a first point of the first working fluid path to a second point of the second working fluid path to permit at least a portion of the working fluid to bypass the first heat exchange section and the expander.

Abstract: A waste heat recovery apparatus for use with an internal combustion engine includes a working fluid circuit having a first heating line and a second heating line parallel to the first heating line, a first heat exchanger in the first heating line operatively connected to transfer heat energy to the working fluid from a waste exhaust flow of an internal combustion engine, a second heat exchanger in the second heating line operatively connected to transfer heat energy to the working fluid from recirculating exhaust gas the internal combustion engine, and a recuperative heat exchanger operatively connected to transfer heat energy to the working fluid in the first heating line from the working fluid at a junction of an expander outlet and condenser inlet.

Abstract: Provided is an exhaust turbine equipped with an exhaust control valve which can reduce wear of the contact surfaces between the shaft and the bushing or the turbine casing. The exhaust turbine is equipped with the exhaust control valve for opening/closing an exhaust bypass passage leading the exhaust turbine being driven by exhaust gas output from an engine to an exhaust outlet passage while bypassing the exhaust turbine, wherein the exhaust control valve comprises a shaft which is supported rotation-freely by a turbine casing and supports a valve element, an arm equipped with a connecting part with a drive source and turning the shaft about the axis thereof by the reciprocating motion of the connecting part produced by the drive source, and a weight attached to an end on the side opposite to the connecting part with the drive source with respect to the axis of the shaft.

Abstract: A waste heat recovery system is for use with a power unit that includes an internal combustion engine. The waste heat recovery system includes a Rankine cycle device in which working fluid circulates through a pump, a boiler, an expander and then through a condenser, heat exchange occurs in the boiler between the working fluid and intake fluid that is introduced into the internal combustion engine while being cooled, a determination device for determining required cooling load for the intake fluid, a pressure reducing device for reducing evaporation pressure in the Rankine cycle device, and a controller for controlling the pressure reducing device so as to reduce the evaporation pressure below a predetermined evaporation pressure if the required cooling load determined by the determination device exceeds a threshold.

Abstract: A waste heat regeneration system includes a pump, a coolant boiler, an exhaust gas boiler, an expander, a condenser, a gas-liquid separator and a supercooler. A flow control valve maintains a temperature difference (T1-T2) at a predetermined value or less by adjusting the amount of an operating fluid which flows in a bypass flow path through the control of an opening degree based on a pressure difference (P1-P2) corresponding to the temperature difference (T1-T2) between the temperature (T1) of the operating fluid on the upstream side of the supercooler and the temperature (T2) of the operating fluid on the downstream side thereof. Accordingly, the degree of supercooling is prevented from becoming excessive and the waste heat regeneration efficiency of a Rankine cycle device can be maintained.

Abstract: A waste heat regeneration system includes a pump, a coolant boiler, an exhaust gas boiler, an expander, a first condenser, a gas/liquid separator, and a supercooler. A first flow control valve adjusts the amount of an operating fluid circulating in a first bypass flow path by controlling its opening degree based on a pressure difference P1?P2 corresponding to a temperature difference T1?T2 between the temperature T1 of the operating fluid on the upstream side of the supercooler and the temperature T2 of the operating fluid on the downstream side thereof, thereby maintaining the temperature difference T1?T2 so as to be larger than or equal to a predetermined value necessary for preventing the generation of cavitation in the pump, and ensuring the degree of supercooling.

Abstract: An ECU for determining whether a request for acceleration is made to a supercharged internal combustion engine includes an acceleration request determining unit that determines whether a pressure difference between the upstream pressure and downstream pressure of a throttle valve disposed in an intake system is equal to or smaller than a predetermined value, and determines that a request for acceleration is made when the pressure difference is equal to or smaller than the predetermined value. The ECU also includes a variable valve actuating mechanism control unit that controls an InVVT and an ExVVT so that the intake charging efficiency and output torque of the engine become equal to the maximum intake charging efficiency and output torque at a certain downstream pressure when the acceleration request determining unit determines that a request for acceleration is made.