Abstract: Methods and systems for cooling a radial engine in a ground-based portable electric power generating system. The engine includes a plurality of cylinders extending radially from a central hub supporting a crankshaft. Each cylinder has a coolant inlet port and a coolant outlet port. The cooling system includes an inlet coolant manifold interconnecting at least two of the coolant inlet ports. The inlet coolant manifold is disposed external to the central hub.

Abstract: A device is provided for exhaust gas recirculation (EGR), in particular in diesel engines, from the exhaust gas tract into the fresh air path of the engine, wherein a cooling device connected to the cooling system of the engine is provided within an EGR section as an exhaust-gas (EG)/coolant heat exchanger, with which an EGR valve for proportioning the EG recirculation rate is associated. The EGR valve is connected to a coolant, and the cooling device comprises an EG pre-cooler and an EG main cooler connected downstream of the EG pre-cooler. The EGR valve is installed between the EG pre-cooler and the EG main cooler in a valve housing between the EG pre-cooler and the EG main cooler. A method for EGR is provided as well.

Abstract: An engine is disclosed of the V-configuration having an integrated engine and transmission. The engine has a crankshaft which directly couples to drive the water pump, oil pump and transmission clutch. The water pump has a drive shaft coupled to the crankshaft that extends across the crankcase from a first to a second side. The water pump includes a housing where at least a portion is defined in the face of the crankshaft.

Abstract: An internal combustion engine includes an air intake system in communication with a plurality of cylinders. An exhaust system is in communication with the plurality of cylinders. An EGR passage is in communication with the exhaust system and the air intake system. The EGR passage includes an EGR cooler with an EGR inlet end with a passage having a first portion extending in one direction in an assembled condition toward an intermediate section. The passage includes a second portion extending in an opposite direction from the intermediate section toward an EGR outlet end. A first cooler matrix is disposed in the first portion and a second, optional, cooler matrix disposed in the second portion. A thermally separated bypass channel is provided to allow a fast warm-up and guarantee the lowest possible pressure drop. The EGR cooler shape allows a compact packaging around the bypass pipe.

Abstract: An engine assembly is provided herein. The engine assembly includes a head gasket interposing a cylinder block and a cylinder head, the head gasket comprising a first layer in face sharing contact with a portion of a cylinder head attachment surface included in the cylinder block and having a first-layer coolant opening adjacent to two neighboring cylinders and a second layer having a second-layer coolant opening having a smaller cross-sectional area than the first-layer coolant opening.

Abstract: The invention relates to an internal combustion engine (1) with a crankcase (3) and a cylinder head (4) having exhaust ports (9) feeding into an exhaust manifold (10) for exhaust gas from the combustion chambers (5) of the internal combustion engine (1). Provision is hereby made for the cylinder head (4) to include at least one region of a heating channel (12) which is different from the exhaust ports (9) and the exhaust manifold (10) and has an inlet side (14) branching from one of the exhaust ports (9) or the exhaust manifold (10), and which is flowed through by an exhaust mass flow that is adjustable by an actuator (13). The invention further relates to a method for operating an internal combustion engine (1).

Abstract: An internal combustion engine is provided. The internal combustion engine includes a cylinder block having a cooling jacket and a cylinder head having two cooling jackets. In one example, the internal combustion engine may be operated so as to reduce engine friction and emissions during cold engine starts.

Abstract: An engine is disclosed of the V-configuration having an integrated engine and transmission. The engine has a crankshaft which directly couples to drive the water pump, oil pump and transmission clutch. The water pump has a drive shaft coupled to the crankshaft that extends across the crankcase from a first to a second side. The water pump includes a housing where at least a portion is defined in the face of the crankshaft.

Abstract: A cooling system for a wind tunnel (100) is disclosed. The heat exchanger (200) of the present disclosure is formed as a turning vane assembly in an airflow duct of a re-circulating wind tunnels. The individual vanes (201) are formed from extruded aluminum with coolant fluid channels (206, 207, 208) running continually down the length of the vane. One or more channels can be used, depending on the application of vane and the cooling capacity needed. The exterior of the vanes are formed in an airfoil shape to efficiently turn the air flow the de-sired amount in a manner well known in the art. The turning vanes are connected to a fluid supply (204) with single piece connectors (202) that removably attach to the turning vanes. In the depicted embodiment the connectors are attached with screws. In the depicted embodiment the connectors are formed as a single piece in a two-piece injection mold.

Abstract: A cooling structure for an internal combustion engine includes a spacer. The spacer is fitted inside a water jacket which is formed to surround peripheries of a plurality of cylinder bores arranged one after another on a cylinder row line of a cylinder block of the internal combustion engine. A cooling condition of the cylinder bores is controlled by regulating a flow of cooling water in the water jacket by use of the spacer. A fixing member for fixing the spacer inside the water jacket is provided on an inner wall surface of the spacer facing the cylinder bores.

Abstract: A cooling system for an engine having a plurality of piston cylinders. The cooling system can include a liquid coolant source having liquid coolant and a cylinder cooling passage network having an inlet and an outlet for receiving and transmitting the liquid coolant. The cylinder cooling passage network having a plurality of individual upstream fluidic passages each being fluidly coupled to the inlet to directly receive the liquid coolant from the liquid coolant source in parallel flow. The cylinder cooling passage network further having a plurality of cylinder jacket passages each extending about at least a portion of a corresponding one of the plurality of piston cylinders and being positioned immediately adjacent thereto. The cylinder jacket passages are fluidly coupled directly to a corresponding one of the plurality of individual upstream fluidic passages to receive the liquid coolant and transmit the liquid coolant to the outlet for improved cooling performance.

Abstract: A cooling system for an engine having a plurality of piston cylinders. The cooling system can include a liquid coolant source having liquid coolant and a cylinder cooling passage network having an inlet and an outlet for receiving and transmitting the liquid coolant. The cylinder cooling passage network having a plurality of individual upstream fluidic passages each being fluidly coupled to the inlet to directly receive the liquid coolant from the liquid coolant source in parallel flow. The cylinder cooling passage network further having a plurality of cylinder jacket passages each extending about at least a portion of a corresponding one of the plurality of piston cylinders and being positioned immediately adjacent thereto. The cylinder jacket passages are fluidly coupled directly to a corresponding one of the plurality of individual upstream fluidic passages to receive the liquid coolant and transmit the liquid coolant to the outlet for improved cooling performance.

Abstract: An exemplary cooling system includes, among other things, a first pump to supply coolant to a cylinder head of an engine, a second pump to supply coolant to a cylinder block of the engine, a control unit that governs the first pump and second pump, and at least two fluid return channels to recirculate coolant to the pumps. The first and second pumps are arranged to backflow coolant through the engine.

Abstract: An engine assembly includes a coolant pump, an engine structure, a radiator supply feed and a radiator bypass feed. The engine structure defines a first set of cylinders, a first coolant return gallery and a first cooling jacket. The first coolant return gallery extends in a longitudinal direction from a first longitudinal end to a second longitudinal end of the engine structure. The first cooling jacket is in communication with the coolant pump and with the first coolant return gallery. The first coolant return gallery forms a radiator bypass passage providing the coolant fluid to the coolant pump and bypassing the radiator during a first operating condition and forms a radiator supply passage providing the coolant fluid to the radiator during a second operating condition.

Abstract: An exhaust gas line (1) of an internal combustion engine includes at least one catalytic converter (2) which is provided with at least one catalytic converter support (4) which is arranged in the housing (3) and which includes at least one first and one second area (5, 6) which can be flowed through in parallel, with the flow being capable of being deactivated in at least one area by a switching device (8) arranged in the exhaust gas line (1). In order to achieve a rapid activation of the catalytic converter in the simplest possible and most compact way, the areas (5, 6) of the catalytic converter support (4) have different physical and/or chemical properties in relation to response behavior, permeability, catalytic activity and/or thermal inertia.

Abstract: A cooling structure of an internal combustion engine includes: a cooling water introducing port provided on one end side of a cylinder block; and a water jacket provided so as to surround a cylinder bore wall, wherein cooling water is introduced from the cooling water introducing port into the water jacket, the cooling water is branched to flow to a portion on an intake side and a portion on an exhaust side of the water jacket of the cylinder block of the internal combustion engine, and the cooling water is supplied from a cylinder block side to a cylinder head side, the cooling structure of the internal combustion engine, further comprising a first regulation portion that regulates a flow of the cooling water supplied to the cylinder head side.

Abstract: An internal combustion engine that includes individually-cooled cylinder assemblies. Direct raw-water cooling is provided for the engine's intercooler, oil cooler, and heat exchanger, which is used for the purpose of cooling a fresh water coolant circulating individually through each of the engines' separate cylinders.

Abstract: An engine cooling system comprises a coolant inlet formed at one side of a cylinder block for allowing a coolant to separately flow into the cylinder block and a cylinder head, and a coolant outlet formed at the other side of the cylinder head for allowing the coolant having flowed into the cylinder block and the cylinder head to separately flow out of the cylinder block and the cylinder head. The coolant outlet is formed diagonally opposite to the coolant inlet. The coolant delivered from a water pump separately flows into the cylinder block and cylinder head, whereby a cooling efficiency of the engine is improved.

Abstract: A coolant system and method for control of cylinder temperature in a multiple cylinder internal combustion engine includes an inlet rail for receiving coolant from a pump, an outlet rail located on a side of the cylinder head opposite the inlet rail and a plurality of individual coolant flow passages extending within the cylinder head and connecting the inlet rail with the outlet rail. A control valve and an associated temperature sensor are provided within each of the coolant flow passages and a controller individually controls each of the control valves in accordance with a signal received from its associated temperature sensor. The control valves may be controlled to bring the temperatures detected by their associated temperature sensors into conformance with an optimum temperature predetermined for engine speed and/or engine torque load.

Abstract: An engine cooling system comprises a coolant inlet formed at one side of a cylinder block for allowing a coolant to separately flow into the cylinder block and a cylinder head, and a coolant outlet formed at the other side of the cylinder head for allowing the coolant having flowed into the cylinder block and the cylinder head to separately flow out of the cylinder block and the cylinder head. The coolant outlet is formed diagonally opposite to the coolant inlet. The coolant delivered from a water pump separately flows into the cylinder block and cylinder head, whereby a cooling efficiency of the engine is improved.

Abstract: This invention relates to a method of cooling an internal combustion engine, to an internal combustion engine assembly. The invention provides an internal combustion engine which has a primary and a secondary flow of coolant together with a method of cooling such and engine. The secondary flow of coolant is injected into the primary flow of coolant in dependence upon a variable provided by a sensor, which provides an indication of the temperature of the engine body in the region where the secondary flow of coolant mixes with the primary flow of coolant.

Abstract: A cylinder head cooling passage structure comprises: a cylinder head H1; two intake valves 22; and an exhaust valve 32. The two intake valves 22 are provided in the cylinder head H1 such that the intake valves are substantially symmetric with respect to a plane that includes a center axis a1 of a cylinder of an OHC-type engine E and is orthogonal to a crank shaft Cr. The exhaust valve 32 is provided in the cylinder head H1 such that the exhaust valve is situated on an opposite side of the intake valves 22 with respect to a plane that includes the center axis a1 of the cylinder and is in a longitudinal direction of the crank shaft Cr.

Abstract: A marine drive comprises an open loop cooling system for cooling various engine components using water drawn from the body of water in which an associated watercraft is operating. A water inlet of the cooling system has a filter cover which includes a series of apertures through which water can flow. The apertures have a maximum cross-sectional width. After passing through the water inlet, cooling water is pressurized and directed to an engine coolant passage to cool engine components. A pilot water passage branches off of the engine coolant passage and delivers cooling water through peripheral engine components to cool the components. The pilot cooling water is discharged from the marine drive in a pilot water stream that is visible to the operator of the watercraft. No portion of the pilot water passage has a diameter that is less than the maximum dimension of the water inlet filter cover openings.

Abstract: A process of molding a cylinder block of a multi-cylinder engine comprises making a jacket core (30) so as to form cylinder jackets (8) of the multi-cylinder engine (E), attaching the jacket core (30) to a cylinder block forming mold (28), and pouring molten metal into the cylinder block forming mold (28). The process makes a water passage forming core (31) of sphered particle sand having a lower expansion coefficient than the common silica sand. The core (31) is intended for forming at a head side portion of an inter-bore wall (4) of the multi-cylinder engine (E), a cooling water passage (10) which communicates the cylinder jackets (8) with a head jacket (22). And prior to pouring the molten metal, the process fixedly attaches the water passage forming core (31) to a position corresponding to the inter-bore wall (4) of the jacket core (30).

Abstract: A liquid-cooled internal combustion engine has cylinder banks that tilt toward one another, to for a V engine. A coolant, which is fed to the exhaust gas-sided cooling jackets in the cylinder banks, is fed over cylinder heads with cross flow to cooling jackets. The coolant drains over break-throughs in the cylinder bank boundaries into an outflow line in the V-space. The outflow line and the inflow line are connected to a coolant pump. The coolant is fed from the inflow line over distribution channels at a housing end to the exhaust gas-sided cooling jackets.

Abstract: An object of the present invention is to realize both good cooling balance between two banks (2, 3) and good oil cooling performance, and further reduce temperature difference between the banks. A cooling system for a V-type engine according to the present invention causes the cooling water supplied from a water pump (10) to be distributed to the banks (2, 3) of the engine (1) after an oil cooler (15). The cooling water prior to cooling the engine can cool the oil sufficiently, and the cooling water after passing the oil cooler (15) is distributed to the banks (2, 3) equally so that no temperature difference arises between the banks. A connection tube (18) for communicating water jackets of the banks (2, 3) is integrally formed with a housing member (20) mounted on an end of the engine in a crankshaft direction. Since an existing flywheel housing (20) or the like is utilized, a separate pipe is not necessary, and therefore easy layout and size reduction are realized.

Abstract: A cooling system for an internal combustion engine includes two independently operated subsystems, one for the cylinder head of the engine and one for the engine block. The cylinder head cooling subsystem includes a pump for flowing a first coolant from a first reservoir through a first radiator and the cylinder head of the engine. A temperature sensor is provided for measuring the first coolant temperature in the cylinder head cooling subsystem, and a control module responsive thereto for regulating the flow of the first coolant circulated by the pump. The engine block cooling subsystem is physically and functionally independent of the cylinder head cooling subsystem and includes a reservoir filled with a second coolant in fluid communication with a second radiator and a control device for controlling the flow of the second coolant to the engine block. The engine block cooling subsystem operates through natural thermodynamic flow without the use of a pump.