Abstract: In order to reduce radiation heat from the turbine housing of a supercharger, the turbine housing is conventionally water-cooled or covered with a heat shielding material, but it is required to control heat loss due to excessive water cooling or high temperature on the outer surface of the heat shielding material. On the contrary, a solution by a cooling structure consisting of an inner thermal insulation portion of an air layer and an outer low temperature portion covering the inner thermal insulation portion has an inevitable problem of increasing number of components and upsizing.

Abstract: A gear pump having double-helical gears with bearing assembly seals and gear end seals which provided double seal interfaces between the pump cavity and bearing cups having disposed therein bearing assemblies for supporting pump shafts for rotation. The double seal interfaces preclude pumped fluid, particularly contaminated fluid including entrained abrasives from making contact with the bearing assemblies. An adjustable packing seal mechanism, a gear gap adjustment mechanism, a fluid pressure relief system, and pump heat exchanger features are also disclosed.

Abstract: Various rotary pumps are disclosed that are designed to pump viscous fluids or slurries. Often, the seals of such pumps can become over heated. The disclosed pumps include slots disposed in the rotors and/or slots disposed in the openings through which the drive and driven shafts task so that some of the fluid being pumped through the pumping chamber can migrate through the proximal wall of the pump casing to the seal assemblies disposed on the other side of the proximal wall of the pump casing. Thus, the seal assemblies of the pumps are cooled without resorting to the use of a cooling jacket or other cooling mechanism.

Abstract: Disclosed is a super-turbocharger system that increases power and efficiency of an engine. The system uses the exothermic properties of a catalytic converter to extract additional energy from exhaust heat that is used to add power to the engine. Compressed air is supplied and mixed with exhaust gases upstream and/or downstream from a catalytic converter that is connected to an exhaust manifold. The gaseous mixture of exhaust gases and compressed air is sufficiently rich in oxygen to oxidize hydrocarbons and carbon monoxide in the catalytic converter, which adds heat to the gaseous mixture. In addition, a sufficient amount of compressed air is supplied to the exhaust gases to maintain the temperature of the gaseous mixture at a substantially optimal temperature level. The gaseous mixture is applied to the turbine of the super-turbocharger, which increases the output of said super-turbocharger, which increases the power and efficiency of said engine.

Abstract: A scroll-rotation prevention assembly of a scroll compressor includes a fixed scroll, an orbiting scroll and an Oldham ring. The fixed scroll is positioned in the compressor and has a body. Two blocks extend from the periphery of the body. The orbiting scroll is disposed to correspond to the fixed scroll and has a main body. Two protrusions extend from the periphery of the main body. The Oldham ring is sandwiched between the body of the fixed scroll and the main body of the orbiting scroll. The Oldham ring has a first surface provided with a pair of first troughs and a second surface opposite to the first surface. The second surface is provided with a pair of second troughs. Each protrusion is slidably connected in the first troughs. Each block is slidably connected in the second troughs. Thus, the wear of the Oldham ring can be reduced.

Abstract: A camshaft assembly configured to rotate about an axis of rotation within the engine of a motor vehicle to provide timing between cyclic operation of engine components is provided. The camshaft assembly includes a member for providing timing to a first engine component. The member includes a cam surface configured to drive the timing of the first engine component, and an opening. The camshaft assembly also includes a camshaft body cast to the member and configured to engage the opening of the member. The camshaft body includes a lobe configured to drive the timing of a second engine component, and a journal configured to allow efficient rotation of the camshaft body about the axis of rotation. The member is formed from a first material and the camshaft body is formed from a second material, thereby allowing the camshaft assembly to withstand two levels of stress.

Abstract: In order to prevent deterioration in performance of an oil-free screw compressor and scuffing caused by rust, surfaces of both male and female rotors are coated with heat-resistance coatings containing a solid lubricant. A coating contains Polyimide resin to which Molybdenum disulfide, as a solid lubricant, and Aluminum oxide and Titanium oxide, as additives, are added. Accordingly, it is possible to realize a coating that is higher in heat resistance and longer in lifetime than a conventional one.

Abstract: In an internal-gear type fluid device, guide teeth are formed by inner teeth at an outer rotor, and vane portions extending in the width direction are formed at tooth tip portions of the guide teeth. Further, guide teeth are formed by outer teeth at the inner rotor, and vane portions extending in the width direction are formed at tooth tip portions of the guide teeth. Since the vane portions are thus formed at the outer rotor and the inner rotor, the confinement timing when oil confinement is completed can be synchronized with the release timing when oil release is started, by adjusting, for example, the thickness of the vane portions without changing the profile of the guide teeth.

Abstract: A rocker arm assembly may include a body, a cam follower and a lash adjustment member. The body may define a pivot region and a valve engagement region. The cam follower may be coupled to the body. The lash adjustment member may be coupled to the cam follower and may include a locking portion and an adjustment arm extending radially outward from the cam follower.

Abstract: A prime mover uses detonation chambers to provide rotary power through a center hub. The center hub has a center shaft able to rotate and mounted to the center hub, and rotating arms are mounted to the center shaft. A detonation chamber is mounted to each rotating arm at a distance from the center hub which establishes a force moment about the center hub. Fuel passages connect an external fuel source, such as hydrogen and oxygen, with the detonation chambers to deliver fuel to the detonation chambers. Fuel delivered to the detonation chambers is ignited to establish a reaction force which is transferred through the rotating arms and the center hub. The rotating force is used to drive a generator.

Abstract: A rocker arm for engaging a cam is disclosed. An outer arm and inner arm are configured to transfer motion to a valve of an internal combustion engine. A latching mechanism includes a latch, sleeve and orientation member. The sleeve engages the latch and a bore in the inner arm, and also provides an opening for an orientation member used in providing the correct orientation for the latch with respect to the sleeve and the inner arm. The sleeve, latch and inner arm have reference marks used to determine the optimal orientation for the latch.

Abstract: An O-ring has a shape including a first portion that is arranged side by side with a suction port in an axial direction, a second portion that is arranged side by side with a suction port, and a third portion that connects these portions. The first portion and the second portion are arranged to be displaced from each other in the axial direction. The third portion is arranged to extend in a direction different from a circumferential direction between the suction port and the suction port when a pump body is viewed in a radial direction. Thus, the suction ports can be located closer to each other in the axial direction. Therefore, the axial direction length of the pump body can be reduced, and size reduction of a rotary pump device can be achieved.

Abstract: As pressure in a water tank rapidly rises when water inside a compressor is evaporated by the high temperature of compressed air and this situation makes the operation unstable, an object of the present subject matter is to address this problem. A water injected scroll air compressor is provided with: an air end of the scroll air compressor; a driving unit that generates driving force for the air end; a compressing path from a suction port to a discharge port; a portion to inject water into the compressing path; a discharge piping of air discharged from the air end; a tank provided on a path of the discharge piping for storing water separated from the compressed air; and a cooler that is provided on the path of the discharge piping between the tank and the air end and cools the compressed air discharged from the air end.

Abstract: A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a female gear profile formed in a radial portion defining a plurality of roots and an inner rotor with a male gear profile defining a plurality of lobes in operative engagement with the outer rotor. A minimum radial distance between an outer rotor root and a corresponding inner rotor lobe define a duct end face proximate the end plate, wherein the duct end face has a radial height substantially equivalent to the inlet passage radial height at a leading edge of the inlet passage.

Abstract: A connecting device, comprising: a linearly driving drive member; an actuating member driven in a rotating manner by an internal combustion engine charging device with at least one pivot arm connected to the actuating member in a fixed manner, wherein the actuating member transmits rotational moments about a pivot axis, with a slide element connected to the driving member in a fixed manner, and wherein the driving member transmits linear forces oriented obliquely to the pivot axis, with at least one bearing arrangement, which moveably couples the slide element to the pivot arm such that the slide element is displaceably mounted along a displacement axis running parallel to the pivot axis and rotatably mounted about the displacement axis and about a rotary axis running perpendicularly to the displacement axis.

Abstract: A variable valve lift system for an internal combustion engine includes a roller rocker lift mechanism and a driving mechanism. A cam and a roller of the roller rocker lift mechanism cooperate with each other to control valve lift. The roller rocker lift mechanism includes a second rocker arm, wherein one end of the second rocker arm is connected with the driving mechanism by a rotation pin so as to create a straight-line displacement of the driving mechanism; the second rocker arm is provided with a guideway in the direction of the straight-line displacement; a rocker-arm pin of the roller rocker lift mechanism is slidably set in the guideway of the second rocker. According to actual work condition of the internal combustion engine, the valve lift is regulated by a motor; and continuous variable valve lift is provided from low speed to high speed.

Abstract: The disclosed structure achieves a desired balance between higher-rigidity and weight saving in a connection-type rocker arm which integrally rocks a plural of arm portions. The rocker arm has a plurality of arm portions integrally formed on a swinging base end side of the rocker arm which are forked and extend towards a swinging end of the rocker arm, a connecting portion which integrally connects each swinging end of the arm portions, and a concave thinning portion which overlaps a swinging trajectory of the connecting portion, when viewed in the axis direction of the pivot shaft of the rocker arm.

Abstract: A device for the variable adjustment of valve lift curves of gas exchange valves of an internal combustion engine, which has a hydraulic consumer, a camshaft and a volume accumulator. The camshaft is arranged in the internal combustion engine in a rotatably mounted manner by camshaft bearings. The interior of the camshaft has a cavity. Bores are formed on the camshaft in the region of the camshaft bearings and, via the bores, the cavity communicates with the camshaft bearings. The volume accumulator is arranged in the cavity and has a housing which extends in a region of at least one camshaft bearing.

Abstract: A cylinder head assembly for an internal combustion engine having an intake cycle and an exhaust cycle is provided. The cylinder head assembly includes a single valve, a cylinder head body, and a venturi tube. The cylinder head body has an intake port, an exhaust port, and a combustion chamber port configured to intermittently seat the single valve. The venturi tube is disposed within the cylinder head body and has a high pressure portion operably coupled to the cylinder head body proximate the intake port and a distal end spaced apart from the combustion chamber port. The venturi tube permits the intake port to remain in fluid communication with the exhaust port during both the intake cycle and the exhaust cycle of the internal combustion engine.

Abstract: A butterfly valve for a turbocharger system in which the leak path through the valve is controlled by keeping the clearance between either a shaft of the valve and two bushings small or the clearance between the bushings and the counter bores in the valve element small, and making the other clearance larger.