Abstract: The invention comprises a rotary engine method and apparatus configured with a cap seal. A cap seal restricts fuel flow from a fuel compartment to a non-fuel compartment and/or fuel flow between fuel chambers, such as between a reference expansion chamber and any of an engine: rotor, vane, housing, and/or a leading or trailing expansion chamber. Means for providing cap sealing force to seal the cap against a rotary engine housing element comprise one or more of: a spring force, a magnetic force, a deformable seal force, and a fuel force. The dynamic caps ability to track a noncircular path are particularly beneficial for use in a rotary engine having an offset rotor and with a non-circular inner rotary engine compartment having engine wall cut-outs and/or build-ups. The dynamic sealing forces further provide cap sealing forces over a range of temperatures, pressures, fuel flow rates, and operating engine rotation rates.

Abstract: The rotary engine includes a circular stator, a circular rotor rotating about the stator; the rotor and the stator being separated by a circular cylinder and at least one element with two flanges. The rotor includes two compression pistons attached to the inner surface of the rotor. These two pistons are located at the two extremities of a first diameter of the rotor and kept substantially in contact with the outer surface of the stator. The stator includes a recess at each extremity of a diameter. Each recess forms a compression chamber with the compression piston positioned at the end of the recess in the direction of rotation of the rotor and one of the flanges of the element with two flanges, referred to as the cylinder head flange. The motive force is applied to the compression piston when the pressure of the gases inside the compression chamber is suddenly increased to a predefined value.

Abstract: A unit for an internal combustion engine includes a turbocharger unit and an auxiliary component adjacent to the turbocharger unit and provided with means for connection thereof to the structure of the engine. The auxiliary component has a fluid outlet or inlet arranged immediately adjacent to a fluid inlet or outlet of the turbocharger unit, but not in contact therewith. The unit further includes a cylindrical sealing member, resiliently deformable, having opposite ends sealingly associated respectively to the fluid outlet or inlet of the auxiliary component and to the fluid inlet or outlet of the turbocharger unit.

Abstract: A pump assembly, in particular for lubrication in helicopters, has a casing, the lateral wall of which defines an intake port and a delivery port; and the casing houses two rotary pumps powered by a drive shaft via a motion-splitting transmission.

Abstract: A cellular wheel of a device for variably setting control times of gas exchange valves of an internal combustion engine, which has a cylindrical circumferential wall, a driving wheel that is arranged on an outer surface area of the circumferential wall, with a sealing cover that extends from an inner surface area of the circumferential wall radially inward, and a plurality of projections that extend from the inner surface area of the circumferential wall radially inward and from the sealing cover in an axial direction.

Abstract: A compressor includes orbiting and non-orbiting scrolls forming first and second fluid pockets therebetween. First and second ports are disposed in the non-orbiting scroll and radially spaced apart from each other. The first port communicates with the first pocket at a first radial position and the second port communicates with the second pocket at a second radial position. A blocking device is movable between a first position preventing communication between the ports and a fluid source and a second position allowing communication between the ports and the fluid source. The first and second pockets have first and second pressures, respectively. One of the pressures may have a disproportionate pressure change compared to the other of the pressures after at least one of the pockets communicates with the fluid source through at least one of the ports. The disproportionate pressure change biases the orbiting scroll relative to the non-orbiting scroll.

Abstract: In one aspect, a machine includes an engine supported on a machine body. The engine includes a housing and a gear train that includes a crank gear meshed with a cam gear that is meshed with at least one powered gear. The cam gear is attached to a cam shaft by a drive coupler. The cam shaft is rotationally supported in the housing on a plurality of bearings, and the cam gear is rotationally supported on a stub shaft with an inner surface that is out of contact with the cam shaft. The stub shaft is attached to the housing of the engine.

Abstract: An on-off switch is provided between a first battery acting to supply an electric power to on-vehicle electrical equipment and a second battery acting to supply an electric power to an electric supercharger. In the case that charge voltage of the first battery is smaller than a predetermined value and operating power of an electric supercharger 3 is larger than a predetermined value, the on-off switch is opened to suppress electrical effects on the on-vehicle electrical equipment. In other cases, the on-off switch is closed and the second battery is charged by a generator and the first battery. As a result, it is possible to suppress adverse effects on the on-vehicle electrical equipment due to voltage drop or voltage fluctuation of a power source occurring by driving the electric supercharger and thus to make a stable power supply.

Abstract: A camshaft phaser controllably varies the phase relationship between a crankshaft and a camshaft in an internal combustion engine. The camshaft phaser includes an input member rotatable by the crankshaft. The input member is connected through a gear drive to an output member which is fixed to the camshaft. A rotational actuator acting on the gear drive unit causes relative rotation between the input member and the output member. A first stop member is rotatable with the input member in a one-to-one relationship. A second stop member is rotatable with the output member in a one-to-one relationship to limit relative angular travel between the input member and the output member. A torque absorption means is provided for limiting the rate at which torque is applied from the rotational actuator to the gear drive unit when the second stop member makes contact with the first stop member.

Abstract: In an explosion protection for gas a turbine which includes a turbine wheel and a turbine housing surrounding the turbine wheel, wherein the explosion protection comprises a multi-layer structure of material of a high rupture strength, the explosion protection is in the form of an essentially closed pot including a bottom section and a sash extending fully around the bottom section for accommodating the turbine housing.

Abstract: In an exhaust gas turbocharger for an internal combustion engine of a motor vehicle with a turbine comprising a turbine housing with at least a first and a second spiral channel, each being coupled to an exhaust gas line of an exhaust gas tract of the internal combustion engine for conducting exhaust gas to a turbine wheel arranged within the turbine housing and driving a compressor wheel of a compressor of the exhaust gas turbocharger, an area ratio Qg of the turbine corresponds to the formula Qg=(A?+AAGR)/AR>0.40, wherein A? refers to a narrowest flow cross-section of the first spiral channel, AAGR to a narrowest flow cross-section of the second spiral channel (52b) and AR to a wheel exit flow cross-section of the turbine exhaust channel. The invention further relates to a motor vehicle with an internal combustion engine and such an exhaust gas turbocharger.

Abstract: An engine is equipped with a variable valve timing mechanism, which is operated by a working oil to change rotating phase of a camshaft to thereby change the valve timing, and includes an oil passage formed in a chain case and an oil passage formed in the cylinder head so as to be communicated with the hydraulic actuator, in which the oil passages communicate with each other at a contact surface between the chain case and the cylinder head, and the working oil is supplied from the hydraulic control valve to the hydraulic actuator. The variable valve timing mechanism further includes a block disposed independent of the chain case between an inner wall of the chain case and an end wall of the cylinder head, and an intermediate oil passage formed in the block and including communication openings in which one of the communication openings is offset in position from another one thereof.

Abstract: An oil pressure control apparatus includes a control valve mechanism being in communication with a pump via a first fluid passage and being in communication with a control apparatus via a second fluid passage, a third fluid passage diverging from the first fluid passage to supply oil to a predetermined portion other than the control apparatus, and a fluid passage dimension regulating mechanism including a movable member provided at the third fluid passage and including an opening for regulating a fluid passage dimension of the third fluid passage. The fluid passage dimension regulating mechanism is in communication with a fourth fluid passage diverging from the second fluid passage and biases the movable member to a side increasing the fluid passage dimension by applying the hydraulic pressure of the fourth fluid passage to the movable member separately from the hydraulic pressure of the third fluid passage.

Abstract: A rotary fluid pressure device includes a gerotor gear set having a ring gear and a star gear orbitally moveable about a longitudinal axis relative to the ring gear. The star gear includes an annular spacer ring disposed at one end of the star gear. A brake pin is moveable along the longitudinal axis into and out of interlocking engagement with the annular spacer ring. The brake pin includes an outer surface for engaging an interior surface of the spacer ring. The outer surface of the brake pin and the interior surface of the spacer ring are each angled relative to the longitudinal axis to engage each other in a tapered engagement, to generate an axial force along the longitudinal axis to move the brake pin out of engagement with the star gear in response to a torque being applied to the star gear.

Abstract: The finger follower employs two independent lost motion arms and a rod which moves longitudinally to lock both arms. The rod is transversely mounted in the follower. In order to avoid premature locking, each arm has a chamfered surface on a top wall to force the rod out of engagement with the arm during upward movement of the arms, to protect premature movement of the rod from an unlocked position to a locked position.

Abstract: A valve train of an internal combustion engine equipped with a valve reciprocated by a cam is equipped with a spring seat manufactured in order to prevent the surging of a coil spring. A spring seat having a squeeze film effect of damping the axial motion of a coil spring is provided at one end of the coil spring in a closing direction. The spring seat is configured to be provided with an oil slit which radially intersects and extends helically around a valve axis.

Abstract: A compressor is provided with a substantially cylindrical housing. Inside the housing is a motor housing having a substantially cylindrical shape and a compressor housing having a substantially cylindrical shape. The motor housing and the compressor housing are connected or fit into the housing with a frictional connection to prevent axial movement of the motor housing and the compressor housing.

Abstract: An internal combustion engine that includes a rotary head that has an expansion chamber and that includes intake and exhaust slots. A drum is disposed in close noncontacting proximity to the inner side of the rotary head. The drum and the rotary head are substantially rotationally symmetric about a common axis. Radially moveable plates respond to a mechanical control mechanism adapted to move each plate from a retracted position in which the plate is located entirely within the outer surface of the drum and an extended position in close proximity to an upper surface of the expansion chamber to substantially seal the expansion chamber. At least one of the plates is present between the intake slot and the exhaust slot such that the combustion gas within the expansion chamber exerts a force on the plate and the drum to produce rotational motion of the rotary head about the common axis.