Abstract: The invention relates to a variable turbine geometry (28) of an exhaust gas turbocharger (2) of a motor vehicle, with a fixed guide blade ring (20) and an axially moveable control blade ring (15), wherein an axial relative position of guide blades (21) of the guide blade ring (20) to control blades (15) of the control blade ring (13) defines the size of inflow cross sections to a turbine wheel (11) of the exhaust gas turbocharger (2), and wherein the guide blades (21) and the control blades (15) extend in directions opposite to each other as far as to their respective free ends (18) and the control blades (15) are arranged on a cross carrier of the control blade ring (13), which as a function of the axial relative position opens, partially opens or closes additional inflow paths (29) for the enlargement or the reduction of the inflow cross sections.

Abstract: This disclosure relates to a waste heat recovery (WHR) system and to a system and method for regulation of a fluid inventory in a condenser and a receiver of a Rankine cycle WHR system. Such regulation includes the ability to regulate the pressure in a WHR system to control cavitation and energy conversion.

Abstract: This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling.

Abstract: A variable geometry turbine comprises a turbine wheel (5) supported in a housing for rotation about a turbine axis with an annular inlet passageway (9) defined between a radial face of a nozzle ring (11) and a facing wall of the housing (10). The nozzle ring is movable along the turbine axis to vary the width of the inlet passageway and has a circumferential array of vanes (20) that are received in corresponding slots (24) in the facing wall. A wastegate valve (15) is provided in a chamber behind the facing wall and gas bypasses the turbine through the chamber to the wastegate port (14) at high flow rates.

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 turbocharger, in particular a turbocharger for an internal combustion engine of a motor vehicle, has a turbine that includes a turbine casing, and a closed-loop control device for regulating an exhaust gas stream flowing through the turbine. The closed-loop control device includes an adjusting element for adjusting an exhaust gas stream, a control lever that is arranged on the turbine casing and is used for actuating the adjusting element, and a control rod which is connected to the control lever via an adjustment piece that has a guide for continuously moving the control rod within the adjustment piece. The control rod can be fixed within the guide by forming an integral joint therewith. There is also provided a method for mounting a closed-loop controller for such a turbocharger.

Abstract: A system for recovering, engine exhaust energy is provided. The system includes an exhaust system including a first exhaust branch and a second exhaust branch. The system includes a first and a second group of exhaust valves associated with a plurality of engine cylinders. The system also includes an energy recovering assembly. The system further includes a control mechanism configured to control at least one of the first and second groups of exhaust valves according to a determined timing strategy based on at least one engine operating parameter.

Abstract: In an exhaust gas heat utilization device of a motor vehicle, comprising an exhaust gas heat utilization cycle in which an operating temperature of an operating fluid of the exhaust gas heat utilization cycle is controlled by adapting a mass flow of the operating fluid through a heat exchanger of the exhaust gas heat utilization cycle in such a way that a maximum permissible operating temperature, in particular the decomposition temperature, of the operating fluid is not exceeded.

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: 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: The flow path of exhaust gas to the turbine wheel (70) of a twin volute turbocharger is influenced by the shape and size of the nozzle formed by the shape (22) of the divider wall (21) and the shape of the flow passage determined by the walls (85, 86) of the turbine housing. By moving the walls (85, 86) toward, or away from the divider wall, the flow of exhaust gas through the nozzle, to the turbine wheel (70) can be modulated, which thus modulates the turbocharger boost pressure. The invention also applies to single volute turbines.

Abstract: Methods are provided for estimating an exhaust temperature of an engine exhaust of a turbocharged engine prior to an inlet of the turbine of the turbocharger. These methods estimate the pre-turbine exhaust temperature based on thermodynamic equations and measured temperature and pressure values from elsewhere in the system. The estimated pre-turbine exhaust temperature can be used for controlling the engine, for verification of the emissions control system, and can also be compared against actual measurements of the pre-turbine exhaust temperature to evaluate engine performance. The present invention also provides turbocharged engine systems including sensors to make the required measurements and logic configured to estimate the pre-turbine exhaust temperature.

Abstract: A waste heat regeneration system for a vehicle having a vehicle engine actuated by a start-stop switch includes Rankine cycle circuit, a motor generator, a by-pass circuit and a control device. The Rankine cycle circuit includes a pump, a boiler heating the heat medium by heat exchanging with waste heat generated by the vehicle engine, an expansion device and a condenser. The by-pass circuit is connected to the Rankine cycle circuit at the upstream and downstream sides of the condenser and the communication of the heat medium is openable and closable therethrough. When the start-stop switch of the vehicle engine is turned off, the control device controls the by-pass circuit to communicate the heat medium therethrough and keeps controlling of the rotational speed of the motor generator until pressure difference between the upstream and downstream of the expansion device is decreased to a predetermined level, and then stops the control.

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: An exhaust gas turbine generator system for a vehicle that has an internal combustion engine with an exhaust system is provided. The exhaust system comprises a turbine, an electrical generator, a waste gate, and an electronic control module. The turbine is disposed in fluid communication with an exhaust gas system of an internal combustion engine to allow fluid flow between the turbine and the exhaust gas system. The electrical generator connects to the turbine. The waste gate is disposed in fluid communication with the exhaust gas system of the internal combustion engine. The waste gate is positionable between an open position and a closed position in response to an output signal from the electronic control module. The fluid flow in the exhaust gas system to the turbine is reduced when the waste gate is positioned to the open position.

Abstract: A variable geometry turbine comprises a turbine wheel (5) supported in a housing for rotation about a turbine axis with an annular inlet passageway (9) defined between a radial face of a nozzle ring (11) and a facing wall of the housing (10). The nozzle ring is movable along the turbine axis to vary the width of the inlet passageway and has a circumferential array of vanes (20) that are received in corresponding slots (24) in the facing wall. A wastegate valve (15) is provided in a chamber behind the facing wall and gas bypasses the turbine through the chamber to the wastegate port (14) at high flow rates.

Abstract: A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recovery system and the exhaust system as necessary. The second loop receives heat from the first loop and the exhaust gas recovery system. The second loop converts the heat energy into electrical energy through the use of a turbine.

Abstract: There is described an exhaust gas turbocharger which comprises a compressor and a turbine having an adjusting drive for adjusting a turbine geometry. A performance characteristic is determined depending on a turbine output, a mass flow through the turbine and a gas temperature upstream of the turbine. A mass flow characteristic is determined depending on the mass flow through the turbine and the gas temperature upstream of the turbine and a gas pressure downstream of the turbine. Depending on the performance characteristic and the mass flow characteristic, an adjuster position of the adjusting drive for adjusting the turbine geometry is determined using a characteristic diagram. For control, an adjusting signal for controlling the adjusting drive is determined depending on the adjuster position for adjusting the turbine geometry. For diagnosis of the exhaust gas turbocharger, the exhaust gas turbocharger is diagnosed depending on the adjuster position.

Abstract: An energy recovery system is provided having a fluid configured to absorb and convey thermal energy. The system also has an exhaust treatment device cooling system configured to transmit thermal energy from an exhaust treatment device to the fluid. In addition, the system has a turbine that is driven by the fluid configured to convert at least a portion of the thermal energy to mechanical energy. The system further has a generator that is powered by the turbine configured to convert at least a portion of the mechanical energy to electrical energy.

Abstract: Multi-stage turbocharging, and more particularly, an advanced multi-stage turbocharging system using the variable turbine power of one or more variable turbine geometry (VTG) turbochargers to adjust compressor boost and exhaust back pressure to engine operating demands. The invention further relates to a turbocharged internal combustion engine, in particular a turbocharged internal combustion engine with at least one high-pressure turbine stage and one downstream low-pressure turbine stage, wherein the high-pressure turbine may be a single-flow or double-flow type, wherein the high pressure or low pressure compressor may be variable geometry, wherein the high pressure or low pressure compressor may be variably bypassed, and wherein the high pressure or low pressure turbine may be provided with an active control variable bypass or wastegate.

Abstract: The invention relates to a method for controlling and/or adjusting the charging pressure of an exhaust gas turbocharger of an internal combustion engine, the exhaust gas turbocharger having a turbine, a compressor which is driven by the latter and which makes available compressed fluid for the internal combustion engine, and a pressure setting device for setting the turbine inlet pressure. Here, it is provided that the turbine inlet pressure is set to a defined turbine inlet pressure such that for the internal combustion engine there is a maximum indicated medium pressure and/or a maximum effective medium pressure, the defined turbine inlet pressure being computed by means of an air model. The invention furthermore relates to an internal combustion engine with an exhaust gas turbocharger.

Abstract: For operating an internal combustion engine having a throttle situated in an exhaust line or exhaust return line, in which a heat engine is driven by a quantity of heat produced by the internal combustion engine, in a first non-heating operating mode of the internal combustion engine, a first setpoint value is preset, a first operating parameter that characterizes a temperature of the internal combustion engine is detected, a first triggering value is determined for the triggering of the at least one throttle as a function of the first setpoint value and the first operating parameter, the at least one throttle is triggered in accordance with the first triggering value, and the at least one heat engine is driven by the resulting quantity of heat.

Abstract: An exhaust heat recovery apparatus includes a Stirling engine and a clutch. The Stirling engine produces motive power by recovering thermal energy from exhaust gas discharged from an internal combustion engine from which exhaust heat is recovered. The motive power produced by the Stirling engine is transmitted to an internal combustion engine transmission through the clutch and an exhaust heat recovery device transmission, and combined with the motive power produced by the internal combustion engine through the internal combustion engine transmission, and is output from an output shaft. If rapid acceleration is required, and the increase in the rotation speed of the Stirling engine therefore lags behind the increase in the rotation speed of the internal combustion engine, the clutch is released. With this configuration, reduction in the power output from the heat engine, from which exhaust heat is recovered, is restricted, and the degradation of the acceleration performance is minimized.

Abstract: The invention relates to a method for optimizing engine braking in a drive unit, particularly used for motor vehicles, comprising an internal combustion engine consisting of a crankshaft, and an exhaust gas turbine which is connected to a crankshaft via a transfer device. A hydrodynamic coupling is arranged in the transfer device.

Abstract: The invention relates to a device for controlling an exhaust gas stream. Said device comprises a housing (1, 101) with at least a first, second and third connection (2, 3, 4, 102, 103, 104) that form links to a first, second and third exhaust gas conduit for conducting the exhaust gases of an internal combustion engine, a first sliding element (6, 106) with a displaceable first sliding rod (6a, 106a) and a first sealing member (6c, 106c) that is located on said rod, a second sliding element (7, 107) with a displaceable second sliding rod (7, 107a) and a second sealing member (7c, 107c) that is located on said rod and an actuator for a force-assisted actuation of the device. According to the invention, a link (4c, 104b) can be established between the first and the second connection and can be adjusted by means of the first sealing member (6, 106) and a link (3c, 103b) can be established and adjusted between the first and the third connection by means of the second sealing member (7c, 107c).

Abstract: Disclosed is a floating altazimuth-tracking array of point-focus lenses that concentrate direct sunlight on the upper ends of optical-homogenizer rods bonded to high-efficiency multi-junction photovoltaic cells. The cells are on heat sinks in altitude-tracking linear troughs holding multiple lens-rod-cell assemblies. Swiveling on horizontal axes, the troughs have their heat sinks always submerged in the water of a circular pond. Only knee-high al-together, the troughs and their floating frame rotate in the shallow pond for azimuth tracking. Closely packed floating platforms comprise solar electric farms with maximal land utilization.

Abstract: A control system for estimating the performance of a compressor is disclosed. The control system has a compressor fluidly connected to an inlet manifold of a power source. The control system also has a power source speed sensor to provide an indication of a rotational speed of the power source, an inlet pressure sensor to provide an indication of a pressure of a fluid within the inlet manifold, an inlet temperature sensor to provide an indication of a temperature of the fluid within the inlet manifold, an atmospheric pressure sensor to provide an indication of an atmospheric pressure, and a control module in communication with each of the sensors. The control module is configured to monitor an engine valve opening duration and an exhaust gas recirculation valve position, and estimate a compressor inlet pressure based on the provided indications, the monitored duration, and the monitored position.

Abstract: Evaporator temperature control means (U) that, in order to make the temperature of steam generated by heating water using exhaust gas of an engine coincide with a target temperature, controls the amount of water supplied to the evaporator based on the flow rate of the exhaust gas, the temperature of the exhaust gas, the temperature of the water, and the temperature of the steam. Calculating an exhaust gas flow rate (Gmix) based on a fuel injection quantity, an air/fuel ratio, and a rotational speed of the engine improves the precision and the responsiveness of the calculation. Controlling the amount of water supplied to the evaporator based on this exhaust gas flow rate (Gmix) therefore improves the accuracy with which the steam temperature is controlled so as to make it coincide with the target temperature.

Abstract: In order to control an actual temperature of a vapor generated by en evaporator (3) for heating water by an exhaust gas from an engine (1) to a target vapor temperature by varying the amount of water supplied from a supplied-water amount control injector (7), a control unit (11) controls the amount of water supplied in a feedforward manner in accordance to an engine rotational speed and an intake negative pressure and controls the amount of water supplied in a feedback manner based on a difference between the actual vapor temperature and the target vapor temperature. It is possible to control the actual temperature of the vapor generated by the evaporator (3) to the target vapor temperature with a high accuracy even in a transient state of the engine (1) by correcting a feedforward control value using at least one of a fuel-cut control signal, an ignition-retarding control signal, an EGR control signal and an air fuel ratio control signal which are parameters indicating a burned state of the engine (1).

Abstract: An engine is provided with a turbocharger which varies a supercharging pressure by an actuator. A controller calculates a first compensation value of a response delay from operation of the actuator to variation of an intake air amount of the engine, and a second compensation value of an operating delay of the actuator with respect to an input of a command signal to the actuator. The command signal to the actuator is calculated by performing a processing based on the first compensation and the second compensation value on an operational target value that was determined based on the running state of the engine, and the response of intake air amount control is thereby enhanced.

Abstract: The invention refers to an apparatus for controlling the flow separation line of rocket nozzles for reducing side loads. For obtaining this control it is suggested according to the invention that the inside of the nozzle (1) has circumferentially regular spaced areas (2) with increased surface roughness compared with the rest of the inside of the nozzle.

Abstract: An arrangement includes a first controller which is only switched through to an actuator for a turbocharger if a fault recognition device detects no fault in the operation of the engine. A switchover is made from the first controller to a second controller, if the fault recognition device detects a critical fault. In this connection, the second controller receives a system deviation as an input signal that is different from the one received by the first controller. Thus in the event of a fault, the turbocharger can be controlled in a very flexible manner without the danger that the speed of the turbocharger is increased into its critical range.

Abstract: An internal combustion engine exhaust system is connected to a controlled manifold for selectively varying the manifold output to an exhaust gas driven turbine which is connected by a clutch to the engine output shaft. The control of the manifold includes selective delivery to a muffler. The clutch is of the hydraulic type. The engine includes a variable speed transmission having a control which is connected to the control of the manifold.

Abstract: A combined solar power generator and water purifier is provided herein. It includes a hollow globular boiler floating on and anchored atop a body of water to be purified. The globular boiler includes water inlet means disposed adjacent an upper portion of the globular boiler, an upwardly directed steam outlet conduit originating from an upper portion of the globular boiler, and a refractor lens window disposed within an upper half of the globular boiler. Controllable means are provided for directing the sun's rays towards the refractor lens window to generate heat to boil water in the boiler. A primary turbine is disposed at a level above that of the boiler, the primary turbine being connected to the steam outlet conduit and being driven by steam under pressure from the boiler. Steam condenser means are connected to the outlet from the primary turbine for dissipating residual heat in the steam effluent from the turbine and for condensing such steam as substantially pure water.

Abstract: An auxiliary power system for an internal combustion engine. The system employs a vapor or hot gas engine coupled to an internal combustion engine by means of an overruning clutch assembly. The internal combustion engine, operated conventionally, generates heat in its cooling and exhaust systems as well as in accessory equipment. The heat generated in the internal combustion engine and its accessories is used for generating vapor in one or more heat exchangers, the vapor preferably being from a liquid with a boiling point well below that of water. The generated vapor is used to drive a vapor engine. Temperature-sensitive means is employed to measure the heat generated in one or more parts of the system for controlling a linear solenoid valve for automatically controlling the internal combustion engine temperatures and thereby the amount of vapor generated.

Abstract: A power plant comprises an internal combustion engine, (Diesel engine), a compressor for supercharging the engine and a turbine for driving the compressor. The turbine is fed in parallel by the exhaust conduit of the engine and by a passage communicating with the compressor outlet. The passage is divided into two parallel arms. The first arm has a throttle. The second arm is connected to the primary zone of an auxiliary combustion chamber via orifices of a cross-section such that the pressure drop produced between the upstream and downstream ends of the orifices of the second arm is the same as the pressure drop produced between the upstream and downstream ends of the throttle of the first arm. The combustion chamber is fed by a fuel supply system entering the primary zone in the region of the turbulence produced in this zone by the arrival of air through the orifices, so that a complete and stable combustion is achieved in the auxiliary combustion chamber.

Abstract: The invention is concerned with an improvement in a turbocharger system for an internal combustion engine having an exhaust manifold and an intake manifold adjacent to the engine. The turbocharger system includes a turbine communicating with the exhaust manifold and driven by gases therefrom. The turbine drives a compressor and has an output which communicates with the intake manifold. A fuel burner chamber forms a part of the turbocharger system, said fuel burner chamber having an input for receiving compressed air, an output through which expanded gases pass and a spark igniter. The turbocharger system further includes means communicating the output of the compressor to the input of the fuel burner chamber, means communicating the output of the fuel burner chamber into and through the exhaust manifold, means for supplying a variable quantity of fuel from a fuel reservoir to said burner chamber and means responsive to intake manifold pressure to vary the quantity of fuel delivered to the burner.

Abstract: This disclosure deals with a centripetal flow turbine housing including an intake opening for receiving a working fluid, a volute which conveys the fluid to a turbine wheel rotatably mounted within the housing, and an outlet opening co-axial with the wheel. A valve is provided adjacent the intake opening, and two intake passages are formed in the housing between the valve and the volute. One of the intake passages is arranged concentrically around the other intake passage, and the intake passages merge ahead of the volute to form generally concentric aspirating nozzles. The valve is adjustable to one position where it directs all of the working fluid through one intake passage, and to a second position where it directs the working fluid through both intake passages.

Abstract: For improving idling and low load operation of a low compression supercharged combustion engine provided with a continuously open bypass at low ambient temperature, recycling of exhaust gas is provided. A branch pipe recycles part of the combustion gas delivered by an auxiliary combustion chamber fed by the bypass to the driven gas inlet of an ejector diffuser located between the compressor and the intake manifold of the engine.