Abstract: Heat transfer jackets with various passage configurations for cooling or heating equipment. For the equipment of interest, one or more regions of maximum heat transfer are identified. For these regions, the cooling jacket is configured with at least one of the following heat transfer passage geometries: impinging jets, curved blades, columns, dimpled interface, organic, or turbulator. The passage geometries are then manufactured using additive manufacturing.

Abstract: A vehicle includes a compartment, a front room located in front of the compartment, and a drive device unit provided behind the compartment and below a floor panel. The drive device unit includes a drive device accommodating a motor, and a motor controller which controls the motor. The vehicle includes a first cooling device located in the front room and cooling the motor controller, and a second cooling device located below the floor panel and cooling the drive device.

Abstract: A system and method of controlling variable speed coolant pumps for vehicle cooling systems utilizes a controller that incorporates measured heat rejection and hydraulic system performance data of the cooling system. The controller calculates coolant flow and pressures at reduced coolant pump speeds. The controller then predicts coolant temperatures at the reduced water pump speeds, and establishes a maximum allowable heat flux to avoid boiling of the coolant. The controller then optimizes the speed of the variable speed coolant pump to prevent the coolant from exceeding the maximum allowable heat flux. The maximum allowable heat flux may be determined by keeping the heat flux within a region characterized by interface evaporation pure convection and/or within a region characterized by nucleate boiling bubbles condensing. The controller may also determine power savings created by optimizing the speed of the coolant pump.

Abstract: A distillation system and process thereof are provided. The system includes an evaporation vessel having a system for heating a liquid contained therein and producing vapours thereof and a condensation vessel having a system for cooling and condensing the vapours produced in the evaporation vessel. A connecting pipe for connecting the evaporation vessel and the condensation vessel transfers the vapours from the evaporation vessel to the condensation vessel. The amount of vapours transferred from the evaporation vessel to the condensation vessel depends upon the pressure differential between the evaporation vessel and the condensation vessel and area of opening of the connecting pipe.

Abstract: An engine cooling system is provided. The system includes a cylinder block formed that has a block coolant chamber formed therein and a front insert that is inserted downward of an upper portion of a front side and receives coolant in the block coolant chamber to adjust a flow of the coolant. Additionally, a rear insert is inserted downward of an upper portion of a rear side and exhausts the coolant in the block coolant chamber to adjust the flow of the coolant.

Abstract: An aircraft including an airframe, a propulsion system, and a heat exchanger is presented. The heat exchanger of the aircraft may include (i) a structural body including a plurality of hollow channels, (ii) a first fluid positioned within the plurality of hollow channels of the structural body, (iii) a plurality of openings positioned on a first side of the structural body and in fluid communication with the plurality of hollow channels, (iv) a wick structure positioned on the first side of the structural body, and further positioned adjacent to an exterior of the plurality of hollow channels and in fluid communication with the plurality of openings, (v) an inlet to the structural body operable to provide a second fluid from an aircraft system, and (vi) an outlet from the structural body operable to receive the second fluid after receiving heat from the first fluid.

Abstract: Systems and methods for providing heat to a passenger cabin of a hybrid vehicle that includes an internal combustion engine are presented. The systems and methods may selectively operate the internal combustion engine with one or more engine cylinders deactivated and may selectively flow coolant to one or more cylinders to improve passenger cabin heating in response to a request for passenger cabin heat.

Abstract: A method is disclosed for improving fuel economy in an internal combustion engine. The method may involve sensing a temperature of an engine block and determining a block thermal energy representing an ability of the block to reject heat. An open loop control scheme may be used together with the block thermal energy to predict if a coolant in the block is about to enter a boiling condition and, when this is about to occur, to open a block valve to permit a flow of coolant through the block. A closed loop control scheme may be used together with the sensed temperature of the block to determine if a coolant boiling condition is about to occur, and to control the block valve to permit a flow of coolant through the block which is just sufficient to prevent the onset of coolant boiling in the block.

Abstract: Methods and systems are provided for draining condensate from a charge air cooler during a compressor bypass valve event. In one example, an engine controller may open a drain valve in the charge air cooler in response to potential compressor surge conditions. Opening the drain valve may be further based on an amount of condensate in the charge air cooler and a required decrease in pressure at an outlet of the compressor during the compressor bypass valve event.

Abstract: When the passing of coolant in an internal combustion engine is restricted to accelerate the warm-up of the internal combustion engine and the coolant in this engine is undergoing nucleate boiling, the restriction of the passing of the coolant in the internal engine is maintained. Specifically, the restriction of the passing of the coolant in the internal combustion engine is maintained during nucleate boiling from the beginning of nucleate boiling of the coolant in the internal combustion engine until the maintenance period has elapsed. Thus, the warm-up of the internal combustion engine is effectively accelerated by restricting the passing of the coolant in the engine. Furthermore, the restriction of the passing of the coolant in the internal combustion engine is canceled when the maintenance period has elapsed. Thus, low-temperature coolant flows in the internal combustion engine and the internal combustion engine is cooled by this coolant, so nucleate boiling of the coolant in the engine is suppressed.

Abstract: A cooling circuit, in particular of a motor is provided that includes a drive unit with a cooling circuit, through which coolant heated in the drive unit flows, a first heat exchanger which emits heat from the coolant to the environment and a device for energy recovery with a second heat exchanger, which is switched into the cooling circuit. A line section of the cooling circuit is connectable in parallel to the second heat exchanger that includes a hydraulic element, which guides a defined coolant flow to the second heat exchanger.

Abstract: A cylinder head including an integrated exhaust manifold (IEM cylinder head) is coupled to a cylinder block of an engine. The IEM cylinder head comprises an exhaust collector coupled to cylinder exhaust valves, an exhaust port coupled to the exhaust collector, and a coolant jacket for cooling the cylinder head. An upper wall of the cylinder head at a region above the exhaust collector and proximal to the exhaust port may include a degas valve and a temperature sensor. The degas valve may be coupled at a top most dome portion of an upper coolant core of the coolant jacket to direct accumulated steam and/or gas out of the upper coolant core to a degas bottle.

Abstract: A cooling arrangement for an internal combustion engine is described, with a coolant balancing tank which is capable of being filled with coolant and the inlet side of which is connected via a first venting line to an internal combustion engine and/or via a second venting line to a cooler for cooling the coolant, and the outlet side of which is connected via a coolant return line to the inlet side of a pumping device for pumping the coolant through the internal combustion engine. The cooling arrangement has, furthermore, a flow control unit for variably limiting the coolant volume flow in the venting line.

Abstract: An apparatus, comprising an engine, and an energy-management system configured to recirculate, at least in part, carbon dioxide relative to the engine in such a way that the carbon dioxide exchanges, at least in part, energy relative to the engine once the carbon dioxide is made to recirculate, at least in part, along the energy-management system.

Abstract: A spacer fitted inside a water jacket of a cylinder block in an internal combustion engine is set so that a space formed between an inner peripheral surface of the spacer and an inner wall surface of the water jacket is smaller than a space formed between an outer peripheral surface of the spacer and an outer wall surface of the water jacket. Accordingly, even if a position of the spacer is shifted in a radial direction, the inner peripheral surface of the spacer comes into abutment on the inner wall surface of the water jacket at first. Thereby, the abutment of the outer peripheral surface of the spacer on the outer wall surface of the water jacket is prevented completely. Therefore, hitting sounds of pistons can be blocked by the space between the outer peripheral surface of the spacer and the outer wall surface of the water jacket.

Abstract: A waste heat recovery system connects a working fluid into passages formed within an internal combustion engine. The fluid passages transport the working fluid to high temperature areas of the engine, raising the temperature of the working fluid near the phase change point or above the phase change point. The heated working fluid drives an energy conversion portion located downstream from the engine. The heat absorbed by the working fluid decreases the load on an engine cooling system as well as driving an energy conversion portion, improving fuel efficiency.

Abstract: A method of cooling for an injection engine and cooling device thereof are provided. The cooling device includes a casing, a by-pass, and a second evaporator. The casing has an air-intake and an interior part defining a receiving space. The air-intake and the by-pass are separately in communication with the receiving space of the casing. The by-pass has one end connected to the air-intake passage of the injection engine. The second evaporator is disposed in the receiving space of the casing and has two refrigerant pipes connected to the first evaporator of the automobile cooling system in parallel. Cold air is conveyed into the air-intake passage of the injection engine via the by-pass such that the temperature at the intake of the engine is reduced.

Abstract: A vehicle waste heat recovery system may include a first pump, an internal combustion engine, a waste heat recovery device and a condenser. The first pump may be in fluid communication with a fluid. The internal combustion engine may be operable to power rotation of a drive axle of a vehicle and may define an engine coolant passage having an inlet in fluid communication with an outlet of the first pump. The waste heat recovery device may have an inlet in fluid communication with an outlet of the engine coolant passage. The condenser may have an inlet in fluid communication with an outlet of the waste heat recovery device and an outlet in fluid communication with an inlet of the first pump.

Abstract: An internal combustion engine has a cylinder-head-passage through which an engine coolant flows toward a water jacket when a water pump is operated. The water pump is an electric water pump utilizing the electric power charged in the battery. A radiator is provided in the cylinder-head-passage. Even after the engine is shut off, the water pump is kept driven.

Abstract: A cooling apparatus for an internal combustion engine includes an engine cooling system that includes a water jacket, a radiator, and a circulation passage through which a coolant is circulated between the water jacket and the radiator, wherein the coolant is provided in the engine cooling system; a water pump that forcibly circulates the coolant provided in the engine cooling system when the water pump is operated; a reservoir tank in which the coolant is reserved, and into which gas flows from the engine cooling system while the reserved coolant flows out to the engine cooling system from the reservoir tank; and a forcible introduction portion that forcibly introduces the coolant from the reservoir tank into the engine cooling system before the internal combustion engine is started.

Abstract: A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module.

Abstract: A heat exchanger that can mechanically automatically control a level of cooling water according to heat generation of the fuel cell. The heat exchanger includes a housing having a cooling water inlet and an outlet connected to a fuel cell stack, a moving plate which moves reciprocally in the housing and discharges cooling water filled in the housing to the stack when it moves in a one direction and when it receives a steam pressure from the stack it moves in an opposite direction, and an elastic member that applies a force to the moving plate in the one direction. The heat exchanger can automatically maintain the level of cooling water despite a difference in heat generated between a full and a partial load operation of the fuel cell obviating complicated electronics such as a thermo-sensor, a valve, or a controller. Also, under a partial load, the exposure of flow channels to superheated steam is avoided, thereby extending the lifetime of the fuel cell.

Abstract: An evaporation cycle heat exchange system for a vehicle is provided. The evaporation cycle heat exchange system is a new type of cooling system that cools vehicle electronic components, a fuel cell stack, an internal combustion engine, an automatic transmission, a turbocharger, etc. using an evaporative heat exchanger, thus improving cooling efficiency and reducing the size of components such as a radiator. The evaporation cycle heat exchange system cools coolant circulating through a vehicle cooling system by employing an evaporative heat exchanger in which a working fluid flows by a pressure difference caused by volume expansion and capillary phenomenon. Accordingly, it is possible to improve the cooling efficiency of the entire cooling system, reduce the size of components to comply with pedestrian protection regulations, improve fuel efficiency, and ensure the stability of the system.

Abstract: An engine assembly may include a first heat exchanger, a fluid supply system providing a fluid flow to the first heat exchanger, a fuel system, an engine block defining first and second cylinder bores, a first piston disposed within the first cylinder bore, and a second piston disposed within the second cylinder bore. The first cylinder bore may receive fuel from the fuel system for combustion therein to drive the first piston. The fluid flow may be pressurized within the first heat exchanger and the pressurized fluid may be provided to the second cylinder bore to drive the second piston.

Abstract: A cooling apparatus for an internal combustion engine includes an engine cooling system that includes a water jacket, a radiator, and a circulation passage through which a coolant is circulated between the water jacket and the radiator, wherein the coolant is provided in the engine cooling system; a water pump that forcibly circulates the coolant provided in the engine cooling system when the water pump is operated; a reservoir tank in which the coolant is reserved, and into which gas flows from the engine cooling system while the reserved coolant flows out to the engine cooling system from the reservoir tank; and a forcible introduction portion that forcibly introduces the coolant from the reservoir tank into the engine cooling system before the internal combustion engine is started.

Abstract: A cooling system (100) for an engine (150), comprising at least one coolant pump (120) for pumping a coolant through the engine (150) and a thermostat (140) operable to selectively direct said coolant from said engine (150) via a bypass (115) back to said engine (150) or via a main radiator (110) back to said engine (150) in response to a temperature of said coolant from said engine (150), and an expansion vessel (130) for deaerating said cooling system (100). The system (100) includes a first deaeration conduit (13V) connecting a high point of said engine (150) to said expansion vessel (130), and a second deaeration conduit (138?) connecting a high point of said main radiator (110) to said expansion vessel, and said first and second deaeration conduits (137?, 138?) are provided with at least one heat exchanger (145, 145?) for cooling coolant flowing through said deaeration conduits (137?, 138?).

Abstract: An apparatus to rotate a cooling fan may employ an engine coolant radiator having a radiator inlet tank attached at an end of the radiator. The radiator inlet tank may be filled with engine coolant and transfer heat into a fan system evaporator contained inside the radiator inlet tank. The tank may contain a liquid working fluid capable of absorbing heat from the engine coolant and becoming a gaseous working fluid. A gas expander with an impeller may be employed to receive the gaseous working fluid from the fan system evaporator and impart rotation in a shaft to which the impeller of the gas expander and cooling fan is attached. A fan system condenser may receive the gaseous working fluid from the gas expander and condense the gaseous working fluid to form a liquid working fluid. A pump pumps the liquid working fluid back to the fan system evaporator.

Abstract: A drive train, especially a vehicle drive train, includes: an engine for supplying drive power into the drive train; a cooling circuit in which a cooling medium is revolved in order to cool the engine or an electric generator or another unit; an expansion machine which is driven with fluid or steam as a working medium and by way of which additional drive power can be supplied to the drive train or which drives an electric generator or another unit, the cooling medium of the cooling circuit being simultaneously the working medium of the expansion machine; and a bypass to the expansion machine which is provided through which the working medium of the expansion machine is forced through a switching valve or can be guided past the expansion machine automatically by the prevailing pressure conditions.

Abstract: An engine cooling system includes a combustion chamber assembly configured to generate detonation waves and a first vapor cooling assembly. The combustion chamber assembly defines a flowpath between an inner liner and an outer liner. The first vapor cooling assembly includes a vaporization section located adjacent to the flowpath and a condenser section spaced from the flowpath, and is configured to transport thermal energy from the vaporization section to the condenser section through cyclical evaporation and condensation of a working medium sealed within the first vapor cooling assembly.

Abstract: An air cleaner device for a vehicle is provided with an air cleaner body containing an air cleaner element and a snorkel connected to the air cleaner body to introduce the outside air into the air cleaner body. The snorkel extends forward of the vehicle past a side of a cylinder portion which projects upward from an engine, and a front end of the snorkel opens between right and left seats of the vehicle. With this configuration, even if the air cleaner body of the air cleaner device should be flooded, it is difficult for water to enter into the interior. Further, it is difficult for the air cleaner body to be influenced by heat, and difficult for dust to get into the air cleaner body.

Abstract: A power tool includes a combustion chamber (1; 54), a drive piston (8) adjoining the combustion chamber (1; 54) and displaceable upon combustion of fuel in the combustion chamber, an ignition device (52) for igniting the fuel in the combustion chamber (1; 54), and a cooling device (2a, 6a; 64; 70) connected with the combustion chamber (1; 54) for cooling the combustion chamber (1; 54) with a liquid cooling medium.

Abstract: An engine device includes a water tank coupled to an engine to supply cooling water to the engine and having a mouth disposed in the upper portion. A separator housing is coupled between the water tank and the engine to receive heated water and vapor or air from the engine, the separator housing is coupled to the mouth with a tube to supply the vapor and the air from the separator housing to the upper portion of the water tank, and then to supply the vapor and the air to the engine. A lid is engageable onto the mouth for enclosing the orifice of the mouth and includes an aperture coupled to the tube, to receive the vapor and the air from the separator housing.

Abstract: Various techniques are disclosed for improving airtight two-phase heat-transfer systems employing a fluid to transfer heat from a heat source to a heat sink while circulating around a fluid circuit, the maximum temperature of the heat sink not exceeding the maximum temperature of the heat source. The properties of those improved systems include (a) maintaining, while the systems are inactive, their internal pressure at a pressure above the saturated-vapor pressure of their heat-transfer fluid; and (b) cooling their internal evaporator surfaces with liquid jets. FIG. 43 illustrates the particular case where a heat-transfer system of the invention is used to cool a piston engine (500) by rejecting, with a condenser (508), heat to the ambient air; and where the system includes a heat-transfer fluid pump (10) and means (401-407) for achieving the former property.

Abstract: An engine device includes a water tank coupled to an engine to supply cooling water to the engine and having a mouth disposed in the upper portion. A separator housing is coupled between the water tank and the engine to receive heated water and vapor or air from the engine, the separator housing is coupled to the mouth with a tube to supply the vapor and the air from the separator housing to the upper portion of the water tank, and then to supply the vapor and the air to the engine. A lid is engageable onto the mouth for enclosing the orifice of the mouth and includes an aperture coupled to the tube, to receive the vapor and the air from the separator housing.