Abstract: A power train system includes a heat exchanger reservoir to collect condensate, a layered intake manifold, and integral tubing leading from the reservoir to an interior of the intake manifold via an intake manifold wall such that there is no seal between the condensate port and the manifold. The tubing splits into at least two branches transitioning into a set of wings containing a plurality of nozzles protruding into the interior.

Abstract: A piston with a cooling gallery containing an open cell radiator is provided. The radiator has a large thermally conductive surface area that acts as a heat-sink to remove heat from the piston. Heat from the piston is transmitted from the radiator to cooling oil that enters the cooling gallery via an oil inlet formed in a floor of the cooling gallery and exits the cooling gallery via an oil outlet. The piston comprises a piston body including an upper part presenting an upper combustion surface and an undercrown surface. A ring belt depends from the upper combustion surface, and the cooling gallery extends around the piston body beneath the undercrown surface radially inwardly of the ring belt. The radiator includes a plurality of fins extending annularly around the cooling gallery. The fins of the radiator are spaced from one another by gaps extending annularly around the cooling gallery.

Abstract: A piston for an internal combustion engine and method of construction thereof is provided. The piston has a piston body including an upper part and a lower part. The upper part has an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore with an undercrown surface beneath the upper combustion surface. The body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface with an annular cooling gallery configured radially inwardly from the ring belt region. The cooling gallery has a floor, wherein the floor has at least one through opening. A coolant medium is disposed in the cooling gallery, and a sealing member is disposed in the at least one through opening to seal off the coolant medium in the coolant gallery.

Abstract: A powertrain includes an engine, an exhaust system including an exhaust passageway in fluid communication with the engine, an exhaust gas heat exchanger, a transmission having a transmission cooling system, a transmission heat exchanger, a heater core, a pump, and an engine coolant circuit. The engine coolant circuit provides fluid communication between the engine, the exhaust gas heat exchanger, the transmission heat exchanger, the heater core, and the pump. The exhaust gas heat exchanger is operatively connected to the exhaust system and configured to transfer heat between the engine coolant circuit and the exhaust system. The transmission heat exchanger is operatively connected to the transmission cooling system and configured to transfer heat between the engine coolant circuit and the transmission cooling system.

Abstract: An assembly including a connecting rod, a bushing, and a locking pin capable of providing different compression ratios in an engine is provided. The bushing is disposed in a bore of the connecting rod. An outer surface of the bushing includes a pair of notches, and an inner surface of the connecting rod includes a corresponding notch for receiving the locking pin. The notches are spaced from one another by greater than 180° and by no more than 190°. The locking pin is movable in the notch, allowing the bushing to rotate from a low compression position to a high compression position, or vice versa. The bushing has a varying thickness, and thus a center axis of an opening of the bushing is closer to the shaft of the connecting rod body when the bushing is in the low compression orientation than in the high compression orientation.

Abstract: A cylinder for a V-twin engine includes a section of steel tubing cut to a length. The section of steel tubing includes a first portion having a first wall thickness and a second portion having a second wall thickness less than the first wall thickness. The second wall thickness is less than 0.050 inch. The section of steel tubing includes a first ribbing pattern on an outer surface, within the first portion, and a second ribbing pattern including multiple ribs formed on individual ribs of the first ribbing pattern. A cast body is provided on the first portion of the section of steel tubing so that the section of steel tubing is fixedly secured within the body to form a cylinder sleeve defining a cylinder bore. The second portion having the second wall thickness extends from an end of the body to be received within a bore of a crankcase.

Abstract: An auxiliary oil circuit for a heat-generating assembly having a main oil sump and a fluid pump for controlling oil flow from the sump includes a first fluid passage in communication with the pump. The circuit additionally includes a remote reservoir for receiving sump oil via the first passage and an orifice in the first passage for controlling an amount of sump oil transferred to the reservoir. The circuit additionally includes an active first valve in the first fluid passage for selectively opening and closing communication between the sump and the reservoir. The circuit also includes a second fluid passage in communication with the auxiliary reservoir for returning the oil from the reservoir to the sump. Furthermore, the circuit includes an active second valve arranged in the second passage for selectively opening and closing communication between the reservoir and the sump.

Abstract: Methods and systems are provided for water injection at an intake port of an engine toward or away from intake valves in response to engine operating conditions. In one example, a method may include port injecting water away from an intake valve in response to engine knock and port injecting water towards an intake valve in response to engine dilution demand. Further, the method may include adjusting an amount of water injected based on one or more of a change in manifold temperature and a change in exhaust oxygen level.

Abstract: A heat exchanger, such as an indirect charge-air cooler for an internal combustion engine, may include a first duct system including a plurality of pipes, a second duct system, a collector including a base part and a box part, and at least two opposite side parts. The plurality of pipes may be arranged between the side parts, and the first duct system may be fluidically separated from the second duct system. The box part may bear against at least one of the side parts via a first contact surface. At least one frame part may be provided and coupled in a non-positively locking connection and/or a cohesive connection, for example by pressing and/or brazing, to a respective outer edge of the side parts, a respective outer edge of the base part, and/or a respect outer edge of the box part.

Abstract: An air intake device includes: an air intake valve provided so as to change intake air by rotation of a rotation shaft; an actuator which is a driving source for rotating and driving the rotation shaft of the air intake valve; a first link member rotatable by a predetermined operation angle about the rotation shaft; a second link member rotatably connected to the first link member; a connection member which connects the first link member and the second link member so as to be rotatable to each other; and a biasing member whose one side end is engaged to the first link member and whose other side end is engaged to the second link member or the connection member to bias the first link member and the second link member or the connection member so that rattling between the first link member and the second link member is suppressed.

Abstract: Provided is an intake manifold for an internal combustion engine, the intake manifold including an upstream portion, a first downstream portion, and a second downstream portion. The upstream portion includes a first upstream passage and a second upstream passage. The first downstream portion includes a first downstream passage configured to communicate the first upstream passage with an intake port of a first cylinder head. The second downstream portion includes a second downstream passage configured to communicate the second upstream passage with an intake port of a second cylinder head. The upstream portion, the first downstream portion, and the second downstream portion are provided in a separate manner. In the intake manifold, a flange of the first downstream portion is connected to a flange of the upstream portion, and a flange of the second downstream portion is connected to the flange of the upstream portion.

Abstract: In a water-cooled inner combustion engine (1), in particular for equipping scooters and motorcycles, the arrangement of the outer cooling tubes connected to a radiator is simplified by arranging a by-pass valve (27), arranged directly on the engine block (2) at a discharge opening (18) obtained therein, which, when the cooling water is lower than a reference temperature, prevents the water circulation in the radiator (18) and it addresses it through a by-pass line (26) by implementing a cooling circuit wholly included in the engine block (2).

Abstract: A generator set for a transport refrigeration unit that is operable at a first frequency and a second frequency. The generator set includes a generator and a prime mover. The generator set is controlled by an electronic control unit (ECU) that is coupled to a controller. The ECU is configured to monitor the engine operation condition to obtain an engine operation condition value; whereas the controller is configured to receive the engine operation condition value and compare the value with an engine operation condition threshold. When the engine operation condition value, for example, exceeds the engine operation condition threshold, the controller instructs the ECU to operate the engine at a first speed; and when the engine operation condition value, for example, is below the engine operation condition threshold, the controller instructs the ECU to operate the engine at a second speed that is slower than the first speed.

Abstract: A system and method for fluidly sealing a cylinder head interface between an engine block and a cylinder head of an internal combustion engine. An example apparatus includes a perimeter seal disposed on an outer periphery of the cylinder head. The perimeter seal has a first surface to abut a cylinder head sealing surface and a second surface to abut an engine block sealing surface. The perimeter seal is configured to prevent fluid from an external environment from entering the cylinder head interface and to allow fluid within the cylinder head interface to vent to the external environment when the fluid is above a predetermined pressure. A first fluid transfer tube seal fluidly seals a first fluid transfer orifice extending between the engine block and the cylinder head. The perimeter seal and the first fluid transfer tube seal are formed as a unitary structure.

Abstract: A method for operating a combustion engine having a crankcase, a piston group and a crankshaft, wherein the crankcase has an oil reservoir and an operational amount of lubricating oil is provided, wherein i) a partial amount of the lubricating oil is continuously discharged from the crankshaft and ii) a refill amount of new lubricating oil is continuously supplied, so that the operational amount of lubricating oil remains essentially the same; as well as a combustion engine for carrying out the method.

Abstract: A valve, which is provided in an exhaust passage of an internal combustion engine to release exhaust, includes a valve seat having an opening opened to the exhaust passage, a valve body having a conical surface or a spherical surface configured to close the opening by coming into contact with the valve seat, a movement unit configured to move the valve body in a direction of intersecting the opening, and an urging unit configured to urge the valve body in the direction of intersecting the opening, and the urging unit controls urging force by the movement unit in a direction of suppressing vibration of the valve body caused by vibration of exhaust pulse frequency determined by a speed of the internal combustion engine and a number of cylinders of the internal combustion engine.

Abstract: Disclosed are journal bearing assemblies, methods for making and methods for using journal bearing assemblies, and motor vehicles employing journal bearing assemblies. A disclosed friction-reducing journal bearing assembly includes a first (upper) bearing shell insert and a second (lower) bearing shell insert. Each insert mounts inside a bore, e.g., of an engine block or piston connecting rod, and has an arcuate inner-diameter (ID) surface. These ID surfaces are adjoined at opposing ends thereof to cooperatively define a cylindrical channel that receives therethrough a journal portion of a shaft (e.g., crankshaft or crank pin). The inner-diameter and/or outer-diameter (OD) surface of the second insert includes one or more axially elongated and/or one or more axially angled grooves, each of which extends only partially across the axial width of the shell insert. The lower insert may be fabricated with two axially elongated grooves extending generally orthogonally from respective edges of the insert.

Abstract: An oil supply device for an engine is provided with an oil pump of a variable capacity type; a plurality of hydraulically operated devices connected to the pump via an oil path; a pump control unit which changes the capacity of the pump to control a discharge amount of oil; and a hydraulic pressure detecting unit which detects a hydraulic pressure of the oil path. The plurality of the hydraulically operated devices include a metal bearing, and the pump control unit sets a highest requested hydraulic pressure among requested hydraulic pressures of the hydraulically operated devices as a target hydraulic pressure for each of the operating conditions of the engine, and changes the capacity of the pump in such a manner that the hydraulic pressure detected by the hydraulic pressure detecting unit coincides with the target hydraulic pressure for controlling the discharge amount.

Abstract: A damper guard coupled to an external surface of an engine block includes a back cover defining an opening. The damper guard also includes a front cover adapted to couple to the back cover such that an enclosed space is defined between the front and back covers. The damper guard further includes a pressure balancing line coupled at a first portion of the back cover. The pressure balancing line is adapted to vent the enclosed space to an engine crankcase for maintaining the enclosed space at an engine crankcase pressure. The damper guard includes a drain line adapted to allow drainage of a damper oil present in the enclosed space.

Abstract: A vehicle includes a radiator, a bypass passage, a first valve, a second valve, and a controller. Cooling water is circulated through the radiator independently of a cylinder block and a cylinder head of an engine. The radiator cools the cooling water. The cooling water is circulated through the bypass passage while bypassing the radiator. The first valve switches between an open state in which cooling water is circulated through the cylinder block and a closed state in which cooling water is not circulated through the cylinder block. The second valve receives cooling water circulated through the cylinder head and cooling water circulated through the cylinder block via the first valve. The second valve uses an intermediate opening to adjust a flow rate of cooling water circulated through the radiator and the bypass passage. The controller controls opening and closing of the first valve and the opening of the second valve.