Abstract: A system and method for dissipating vehicle under hood heat accumulated during stationary engine operation at high load or RPM and/or under high temperature ambient conditions is installed in a vehicle having an engine positioned within an engine compartment, and a cooling fan selectively driven by way of a fan clutch. The system includes a controller connected to the engine and to the fan clutch. The controller determines whether the period of stationary engine operation occurs at or above a threshold engine load or RPM, at or above a threshold engine operating temperature, at or above a threshold ambient temperature, and/or for or longer than a threshold stationary engine operation duration. If so, the at least one controller increases a low idle set point of the engine and commands the fan clutch to engage or remain engaged for a cool-down period following the period of stationary engine operation.

Abstract: A cooling apparatus of a vehicle of the invention comprises an engine cooling system, a device cooling system, and a connection apparatus configured to connect an engine circulation circuit of the engine cooling system and a device circulation circuit of the device cooling system to each other such that heat exchanging liquid cooled by a device radiator of the device cooling system, is supplied to an engine passage formed in an internal combustion engine without flowing through a device passage formed in the device including at least one of a motor of the vehicle, a battery for storing electric power to be supplied to the motor, and a power control unit for controlling a supply of the electric power from the battery to the motor.

Abstract: The invention relates to an internal combustion engine comprising a combustion engine (10) and a cooling system, which has a coolant pump (40), a main cooler (38), a heating heat exchanger (36), coolant channels (28, 30) in the combustion engine (10), and a control device (20) having an actuator (26) for the closed-loop distribution of a coolant according to at least one local coolant temperature, characterised in that the control device (20) can be connected to a coolant compensation container (106) via a connection in line and, with an actuation of the actuator (26) in one direction, the control device (20): permits a coolant flow through the coolant channels (28, 30) of the combustion engine (10), and through the heating heat exchanger (36), and prevents same through the main cooler (38), and closes the connection line in a first primary position (80); releases the connection line in a second primary position (96); and also permits a coolant flow though the main cooler (38) in a third primary position (126

Abstract: Methods and systems are provided for expediting engine cooling while reducing the overall energy consumption of the engine cooling system's components. A first circulation pump is used to pump coolant through an engine block as a function of engine output while a second radiator pump is selectively operated when a thermostat valve is open to pump coolant through a radiator and the engine block to effect the engine coolant temperature. Operation of the second pump is coordinated with the operation of a radiator cooling fan and grille shutters to improve radiator performance.

Abstract: A vehicle thermal management system includes an engine, a coolant pump, a first heat exchanger, a first valve in communication with the first heat exchanger, a second valve having a plurality of outlets, a second heat exchanger in communication with a first of the plurality of outlets, a third heat exchanger in communication with a second of the plurality of outlets, a bypass fluid conduit in communication with a third of the plurality of outlets, and a controller that determines a first potential benefit based upon a loss function of the second heat exchanger, determines a second potential benefit based upon a loss function of the third heat exchanger, compares the first potential to the second potential, and proportionally distributes flow between the first heat exchanger, the second heat exchanger, the third heat exchanger, and the bypass fluid conduit based upon the comparison.

Abstract: A prechamber device for a combustion engine, the prechamber device extending from a first axial end to a second axial end along an axial direction, is provided. The prechamber device includes a prechamber body circumferentially enclosing a prechamber volume, a nozzle body extending from the prechamber body and disposed at a first axial end of the prechamber device, an interior of the nozzle body in fluid communication with and providing an appendix of the prechamber volume, and nozzle openings provided through the nozzle body from the interior to the exterior of the nozzle body. The prechamber device also includes one or more cooling channels, extending inside in the prechamber body and apart from the nozzle body from a first coolant inlet/outlet to a second coolant inlet/outlet.

Abstract: A Venturi-based purge vapor supply system for a turbulent jet ignition (TJI) engine and its method of operation utilize an air compressor configured to output pressurized air, a vapor canister configured to store purge vapor evaporated from liquid fuel housed in a fuel tank, a purge vapor injector configured to inject a mixture of air and purge vapor into a pre-chamber of the TJI engine and an ejector tee connected between the air compressor, the vapor canister, and the purge vapor injector, the ejector tee having a Venturi-based design such that the pressurized air from the air compressor draws the purge vapor into the ejector tee and combines the air and the purge vapor to form and output the mixture of air and purge vapor to the purge vapor injector.

Abstract: A device and method for regulating a compressor for an internal combustion engine. At least one actual variable is detected that characterizes a property of an air column, which is situated at an outlet of the compressor in an induction tract of an internal combustion engine, the actual variable being compared in a comparison with a comparison value, the comparison value characterizing a limit for the property of the air column, a setpoint variable being determined as a function of the result of the comparison in order to shift the actual variable in the direction or opposite direction of the comparison value, and an actuator for influencing the actual variable being operated as a function of the setpoint variable.

Abstract: A two-stage valve assembly for a turbocharger includes a movable primary valve adapted to open and close a valve seat of the turbocharger. The primary valve has at least one opening extending axially therethrough. The two-stage valve assembly also includes a movable secondary valve coupled to the primary valve to open and close the at least one opening of the primary valve. The two-stage valve assembly further includes a spring disposed between the primary valve and the secondary valve to seat the secondary valve against the primary valve. The secondary valve is adapted to be coupled to a valve arm of the turbocharger such that relative small movement of the valve arm causes the secondary valve to move and open the opening to allow some exhaust gas of the turbocharger to escape through the at least one opening without moving the primary valve relative to the valve seat.

Abstract: A dual-chamber onboard electrolysis system is configured to produce HHO gas for heavy duty trucking applications.

Abstract: An HHO gas stream for use in an internal combustion engine is heated by heat exchange from with an exhaust gas stream from the internal combustion engine.

Abstract: A method and device for water injection, wherein a water injector (104) is activated in accordance with an activation (200) to open at a first time (t1) and to close at a second time (t2), wherein a water pressure profile (300) is measured and a change in the water pressure profile (400) is determined on the basis of the water pressure profile (300), wherein, depending on the water pressure profile (300) and on the change in the water pressure profile (400), it is determined whether the water injector (104) has been opened as a result of the activation (200), and/or wherein, depending on the water pressure profile (300) and on the change in the water pressure profile (400), it is determined whether the water injection (104) has been closed as a result of the activation (200).

Abstract: The invention relates to a longitudinally adjustable connecting rod (7) for a reciprocating piston engine, in particular a reciprocating piston internal combustion engine, a reciprocating piston engine, and a vehicle comprising a reciprocating piston engine. The longitudinally adjustable connecting rod (7) comprises a longitudinal adjusting mechanism (8) for adjusting an effective length (L) of the connecting rod, a hydraulically actuated control device (12), switchable at least between two control modes, for controlling the longitudinal adjustment, and an electromagnetically actuated hydraulic switching valve (9) for hydraulically actuating the control device (12).

Abstract: A multi-stage turboexpander and a method for generating mechanical power therewith are disclosed. The multi-stage turboexpander includes a casing and a shaft, arranged for rotation in the casing. The shaft is supported by a first bearing at a first shaft end portion and a second bearing at a second shaft end portion. A first radial impeller and a second radial impeller are arranged between the first bearing and the second bearing on the shaft for co-rotation therewith around a rotation axis.

Abstract: A gas turbine engine operable using either one of a first fuel and a second fuel includes a water supply and a diffusion flame burner including an innermost spray cone, a plurality of spray cones positioned around the innermost spray cone and grouped into a plurality of stages, and a plurality of outlets positioned around the innermost spray cone. A plurality of valves is arranged to connect the first fuel, the second fuel, and the water supply to the diffusion flame burner and a controller is operable to configure the plurality of valves at least in part in response to which of the first fuel and the second fuel is being consumed. When consuming the first fuel, the valves are configured to deliver a mixture of the first fuel and a quantity of water to the plurality of outlets, and to deliver a quantity of water to the plurality of spray cones, and to selectively activate one or more of the stages to allow passage through only the spray cones of the activated stages.

Abstract: Gas turbine power plants augmented with an air injection system for hot air injection to augment power and are used to drive sensitive cogeneration processes are fitted with compressed air storage capability to more smoothly ramp on air injection in the event of sudden and unexpected interruption of the air injection system. Utilizing stored hot air injection prior to starting an air injection system significantly reduces the start-up time of the air injection system.

Abstract: A turbine housing includes: a housing body which includes a turbine housing part housing a turbine wheel, an inlet section forming an inlet flow passage for guiding exhaust gas to the turbine housing part, an outlet section forming an outlet flow passage for discharging the exhaust gas from the turbine housing part, and a waste-gate flow passage which brings the inlet flow passage and the outlet flow passage into communication so as to bypass the turbine housing part; and a sleeve disposed along an inner wall surface of the housing body forming the waste gate flow passage, at least on a downstream side of the waste-gate flow passage of the housing body with respect to a flow direction of the exhaust gas.

Abstract: Disclosed techniques include energy storage and management using pumping. An energy source is connected to a pump-turbine energy management system, wherein the pump-turbine energy management system includes a pump-energy storage subsystem. Energy from the energy source is stored in the pump-energy storage subsystem. One or more processors are used to calculate a valve-based flow control setting for recovering energy from the pump-energy storage subsystem. One or more valves in the pump-energy management system are energized, wherein the energizing enables energy recovery. Energy is recovered from the pump-energy storage subsystem using a pump-turbine recovery subsystem enabled by the one or more valves that were energized. Waste heat is recovered through a waste-heat recovery subsystem which includes water heat exchangers or a fluid spray. The water from the water heat exchangers can be used to make steam or ice.

Abstract: A silencer of a compressor for aspirating air to be compressed, with a housing having a front plate and a rear plate, a circumferential surface extending between the front plate and rear plate and bordering a suction area, via which the air can be aspirated, and a recess in the rear plate, via which the aspirated air can be supplied to the compressor. A flow-carrying metal component, in particular a wire component, is arranged in or adjacent to the suction area as a flame absorber.

Abstract: In a filtration system, in particular for cleaning the intake air of a gas turbine, including a flow channel surrounded by walls with an inflow opening and an outflow opening, a partition wall with at least two openings between a dirty side and a clean side which is positioned between the inflow opening and the outflow opening and limited by the walls of the flow channel, and at least two filters for purifying a flowing fluid. At least one filter is installed at a first opening on the dirty side of the partition wall and at least one filter at a second opening on the clean side of the partition wall.

Abstract: Vehicles, such as aircraft, may include turbine-based combined cycle power plants (TBCC) for power to achieve high-mach speeds. Cooling systems for such TBCC may include a turbine-generator arranged to be driven for rotation by ambient air to reduce the temperature of the ambient air while providing electric power for use under cocooning of a primary gas turbine engine in favor of a scramjet engine during high-mach travel.

Abstract: A system and method of calculating a fuel pump life expectancy in a fuel burning engine is provided. The method includes tracking a fuel pump speed of the fuel burning engine, tracking a position value of at least one fuel actuated actuator in the fuel burning engine, and calculating a fuel pump life expectancy value based on the fuel pump speed and the position value of the at least one fuel actuated actuator.

Abstract: A fuel manifold assembly for supplying fuel to a combustor of a gas turbine engine comprises an engine case defining a plenum around the combustor. An annular fuel manifold is mounted inside the engine case in the plenum. The fuel manifold has a plurality of manifold ring segments removable from the engine case via an access port defined in the engine case. A method of maintaining the fuel manifold comprises disconnecting a first manifold ring segment from a fuel source; opening an access port in a side of the engine case; and physically disconnecting the first manifold ring segment from the engine case. Then, the first manifold ring segment can be removed from the engine case via the access port for maintenance or replacement purposes.

Abstract: A thermally insulated fluid carrying component, such as fuel manifold, comprises a monolithic body having an internal insulation cavity extending along at least one fluid passage to be shielded from a heat source. Additive manufacturing or metal injection molding technologies can be used to optimise the relative positioning of the insulation cavity and the fuel passage as well as the shape of the monolithic body for thermal insulation purposes.

Abstract: An air start unit for starting and servicing jet engines in aircraft and other flying machines, wherein at least one compressor is provided for generating air and a power supply for supplying electrical power consumers. The air start unit drives the compressor with at least one electric motor, with the electric motor drawing the electrical energy for operation from a high-voltage battery. The electric motors then in turn drive the compressor, which generates compressed air from ambient air for the purpose of starting and servicing the jet engines in aircraft and other flying machines. With an appropriate battery capacity, the air start unit can also supply power consumer of these aircraft and other flying machines via the power supply.

Abstract: A rotating shaft and a method for additively manufacturing the rotating shaft are provided. The rotating shaft includes an elongated body extending along an axial direction and including an inner surface that defines a hollow central portion. An internal support structure extends from the inner surface into the hollow central portion to stiffen the rotating shaft and provide a high stiffness-to-weight ratio. The internal support structures may include stiffening ribs, truss structures, mesh structures, solid disks, and/or regions having a decreased density relative to the elongated body. The elongated body and some or all internal features may be integrally formed as a single monolithic component.

Abstract: A valve apparatus for an aircraft fluid system is disclosed including a valve housing and a valve member. The valve member is configured to move between a first position in which fluid is able to flow along the fluid flow path, and a second position in which the fluid flow path restricted. A valve member drive means is configured to operate the valve member via an actuator external to the housing. The valve apparatus further includes a sensor configured to monitor a feature in the housing to determine the position of the valve member.

Abstract: A distribution method for a gas turbine engine distributes fuel based on a calculated ratio of air flow burnt to total air flow through all combustion zones in the gas turbine engine. This ratio is used to achieve a predetermined flame temperature in the gas turbine engine.

Abstract: A controller for an internal combustion engine includes a controlling section that controls a variable valve actuation device such that the phase of an intake valve becomes a target value. The controlling section executes a process of setting the target value to a steady or transient state phase, a process of calculating a load change rate, and a process of setting a change amount of the transient state phase. The change amount of the transient state phase is set to a change amount when the engine operating state is a transient state and the load change rate is greater than or equal to a predetermined threshold. The change amount of the transient state phase is set to a second change amount that is less than the first change amount when the engine operating state is the transient state and the load change rate is less than the threshold.

Abstract: Systems and methods for reducing noise and vibration that may be associated with engine braking are presented. In one example, intake and exhaust valve timings are adjusted to reduce engine noise and vibration at lower engine braking request levels. The engine intake and exhaust valve timings increase compression engine braking and decrease engine expansion braking for higher engine braking request levels.

Abstract: The invention relates to a control system for an internal combustion engine incorporating an engine shut-off valve for permitting or preventing air flow to an engine, and in particular a diesel or gas-fueled engine. The control system comprises a valve controller unit including a receiver capable of receiving incoming signals from a plurality of sources, and processing a received incoming signal to generate an output signal to output a shutdown command for actuating the shut-off valve for preventing air flow to the engine, and recording, in a memory, event data including a source identifier of the received incoming signal resulting in output of the shutdown command signal.

Abstract: An engine (100) operable in a premixed combustion system and a diffusion combustion system. The engine (100) includes a main fuel injection valve (79), a pilot fuel injection valve (82), a liquid fuel tank (33), a main fuel supply path (121), a pilot fuel supply path (122), a pilot fuel filter (141), a pilot fuel high-pressure pump (56), a pilot fuel tank (171), and a pilot fuel supply pump (173). The pilot fuel tank (171) stores pilot fuel sent from the pilot fuel high-pressure pump (56) and not injected by the pilot fuel injection valve (82). This pilot fuel is sent to an automatic backwash filter (174) and a pilot fuel filter (141) while not passing through the liquid fuel tank (33).

Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced fuel components. A supply tank includes three compartments where the first contains the onboard fuel, the second receives a vaporized adsorbate from the separation unit and condenses at least a part of it into one of an octane-rich fuel component or a cetane-rich fuel component, while the third may either store the condensed and enriched fuel component or help condense more of the vaporized adsorbate. The condensing takes place through heat exchange between the onboard fuel and the vaporized adsorbate that are present within the various compartments of the supply tank.

Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced components. Regeneration of an adsorbate takes place through a heat exchange relation with existing system infrastructure.

Abstract: Timing of HHO gas injection into a 4-stroke engine is optimized based on engine operating parameters to improve fuel economy.

Abstract: Systems and methods for determining the presence or absence of cylinder misfire of an internal combustion engine are presented. In one example, a threshold for establishing or denying the presence of cylinder misfire is determined via engine acceleration amounts of active and non-active cylinders. Engine acceleration values are then compared to the threshold to determine the presence or absence of cylinder misfire.

Abstract: A method for detecting a change in the operating behaviour of a crank drive of a motor vehicle such as cracks in the crank drive or for detecting bearing wear. The crank drive includes a crankshaft, a pulse generator generating a signal S dependent on the rotational speed of the pulse generator and the distance of the pulse generator away from the sensor device. The method includes steps of detection of a current signal Scur of the sensor device during the operation and comparing the current signal Scur with a reference signal Sref stored in a memory and detecting a change in the operating behaviour of the crank drive such as cracks in the crank drive or bearing wear, from the comparison of the current signal Scur with the reference signal Sref.

Abstract: Methods and systems for starting and stopping a diesel engine are presented. In one example, a cetane enhancer is selectively mixed with diesel fuel to provide a cetane enhanced diesel fuel. A diesel engine may be supplied the cetane enhanced diesel fuel after an engine cold start to improve catalyst light off time and engine emissions.

Abstract: Methods and systems are provided for diagnostics of an intake air system hydrocarbon (AIS HC) trap during vehicle-off conditions. In one example, a method may include generating fuel vapor in a fuel tank, directing the generated vapor to the AIS HC trap, and then actively purging the AIS HC trap. Degradation of the AIS HC trap may be indicated based on an exhaust air fuel ratio during the active purging of the AIS HC trap.

Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, during a cold start, a method may include adjusting a position of a first valve disposed in an exhaust gas recirculation (EGR) passage based on an engine operating condition, the EGR passage coupled between the first exhaust manifold coupled to a first set of exhaust valves and the intake passage, upstream of a compressor. As one example, the engine operating condition may include an engine temperature or a temperature of a catalyst disposed in the exhaust passage.

Abstract: A basic opening (A0) of an EGR control valve (22) is set, based on a current engine operation state. A differential pressure (?P1) across the EGR control valve (22) is calculated, based on an actual exhaust system temperature (T1) sensed by an exhaust temperature sensor (33). A reference differential pressure (?P0) is calculated, which is a differential pressure across the EGR control valve (22) in a steady state corresponding to the current engine operation state. A reference pulsation amplitude (D) is calculated, which is an amplitude of pulsation of the reference differential pressure (?P0). The basic opening (A0) is corrected, based on the differential pressure (?P1), the reference differential pressure (?P0), and the reference pulsation amplitude (D).

Abstract: A vehicle propulsion system includes an internal combustion engine with a first combustion chamber and a second combustion chamber, a catalytic converter in an exhaust stream in communication with an exhaust of the internal combustion engine, a gasoline particulate filter in the exhaust stream downstream of the catalytic converter, and a controller in communication with the internal combustion engine. The controller is programmed to determine if a soot loading of the gasoline particulate filter exceeds a predetermined threshold, and adjust a set of engine operating parameters of the internal combustion engine to disable combustion in the first combustion chamber and enrich a fuel mixture in the second combustion chamber if the soot loading in the gasoline particulate filter exceeds the predetermined threshold.

Abstract: An exhaust gas controller for an engine is equipped to appropriately regenerate a filter while restraining a deterioration in fuel efficiency. An oxidation catalyst and a filter capable of collecting particles in an exhaust passage, such that a regenerative injection in which fuel is injected for regenerating the filter is performed, even when a main injection is stopped. Under a first operating condition, in which the main injection is performed and a regeneration condition for the filter is satisfied, the regenerative injection is performed after the main injection. Under a second operating condition, in which the main injection is stopped and the regeneration condition for the filter is satisfied, a fuel injector is controlled to perform a former injection Q1 during a compression stroke and latter injections Q2, Q3 during an expansion stroke, as the regenerative injection.

Abstract: System, method, and apparatus for controlling performance of an engine in response to a set of outputs from a device to an engine control unit. The engine control unit receives profile parameters that are related to outputs of the device. The engine control unit receives a first signal from a device, engages a high idle functionality in response to a first value of the first signal, and engages a high performance functionality in response to a second value of the first signal.

Abstract: A method of controlling an idle speed for an engine of a vehicle includes the steps of sensing a vehicle speed. At least one of a parking brake position and a clutch position is also sensed. When it is determined that the vehicle speed is below a maximum vehicle speed, and either the parking brake is released or the clutch is depressed, the engine idle speed is increased from a base idle speed to a launch idle speed.

Abstract: Methods and systems are provided for enabling a transfer function of a direct injector and a port injector, each fueling an engine cylinder, to be accurately learned. During selected conditions, the direct injected fuel fraction may be actively changed from a target fraction to one of an upper and lower limit of the direct injector so as to provide a measurable air-fuel ratio error. Fueling errors for the distinct fuel injectors is then learned based on the measured air-fuel ratio error relative to the actively changed fuel fraction.

Abstract: A method of controlling an engine includes setting a target torque of the engine, controlling an engine torque based on the target torque, setting an allowable torque that is greater than the target torque, detecting a plurality of differing operating state parameters as indicators indicating an actual operating state of the engine, individually calculating actual torques that are actual engine torques based on the plurality of detected operating state parameters, selecting a largest value among the calculated actual torques as a final actual torque, comparing the selected actual torque to the allowable torque, and generating a control signal according to a result of comparison between the actual torque and the allowable torque.

Abstract: Various embodiments include a method for operating a fuel injector comprising: applying a first current to a solenoid to perform a first injection process and inject a predefined injection quantity; determining a value of a system parameter indicating the relationship between the actual fuel quantity and the predefined quantity; determining, on the basis of the value of the system parameter, whether the actually injected fuel quantity is smaller than the predefined fuel quantity by a predefined amount corresponding to a disparity between a magnetic force exerted on the armature in the direction of the pole piece and an opposite hydraulic force exerted on the armature by fuel; and if it was determined that the quantities differ by enough, applying a second current to the solenoid to perform a second injection; wherein the second current exerts a lower magnetic force on the armature in the direction of the pole piece.

Abstract: A vehicle predictive control system based on big data includes: a vehicle terminal, which is installed in each of a plurality of vehicles, collecting status information related with an in-vehicle device in a corresponding vehicle to transmit the collected status information in real time, and transmitting problem occurrence information upon problem occurrence of the in-vehicle device; and a big data service provider classifying and storing the status information received from the vehicle terminal as big data, and obtaining a problem occurrence condition based on the status information to transmit information corresponding to the problem occurrence condition to the vehicle terminal when receiving the problem occurrence information of the in-vehicle device from the vehicle terminal of at least some vehicles among the plurality of vehicles.

Abstract: Methods and systems are provided for diagnosing temperature sensors of a vehicle. In one example, a method may include, at a duration after an engine-off event, determining that an intake air temperature measured by an intake air temperature sensor of the vehicle is greater than an ambient air temperature measured by an ambient air temperature sensor of the vehicle. In response to the determining, the method may include flowing ambient air across the intake air temperature sensor, and indicating the ambient air temperature sensor is functional responsive to the intake air temperature converging to the ambient air temperature during the flowing.