Power systems and methods of controlling an engine driven air compressor include an air compressor driven by an engine via a clutch. A first pressure sensor configured to sense a pressure level at an outlet of the air compressor. An inlet valve configured to close in response to the first pressure sensor sensing a pressure level above a first pressure level. In addition, a second pressure sensor to sense a pressure level below a second pressure level at a housing of the air compressor, wherein the clutch is configured to disengage in response to the second pressure level, wherein the first pressure level is higher than the second pressure level.

A supercharger includes a main housing, a front cover coupled to the main housing and having an inner portion received within the main housing, a drive coupling assembly arranged between an input shaft and a rotor shaft, and a coupling sleeve disposed about the drive coupling.

A gas ejection apparatus includes: a cylinder having a rotating member that rotates within the cylinder; a motor coupled to the rotating member of the cylinder and that causes gas to be compressed inside the cylinder and to be ejected from the cylinder by causing rotation of the rotating member; a control circuit board that controls the motor; and a case in which the cylinder, the motor and the control circuit board are disposed. The case extends in a planar direction and has side surfaces that are orthogonal to the planar direction. The motor and the cylinder are arranged adjacent to each other in the planar direction of the case. The control circuit board is disposed adjacent to and substantially parallel to one of the side surfaces of the case.

A scavenge/charge pump drive gear for use in an integrated drive generator has a gear body extending between a first end and a second end and having a disc extending radially outwardly. A boss extends from the disc toward the second end. There are outer gear teeth outwardly of an outer diameter of the disc. The outer gear teeth have a unique gear tooth profile with roll angles A, B, C, and D. An integrated drive generator and a method are also disclosed.

A screw compressor for a heating, ventilation, and air conditioning (HVAC) system. The screw compressor includes a housing having an inlet end and an outlet end for refrigerant to pass into and out of the housing. A motor is within the housing. A plurality of screw sets are arranged about the motor. The screw sets receive refrigerant entering through the inlet, compress the refrigerant between meshed rotors of the plurality of screw sets, and direct refrigerant out of the housing through the outlet end of the housing.

There is provided a co-rotating scroll compressor in which a driving-side scroll member including a spiral wall between facing end plates can be manufacturable at low cost. A driving-side scroll member (70) includes a first driving-side scroll portion (71), a second driving-side scroll portion (72), and a bolt (31). The first driving-side scroll portion (71) includes a first driving-side end plate (71a) and a first driving-side wall (71b), and is driven by a motor (5). The second driving-side scroll portion (72) includes a second driving-side end plate (72a) and a second driving-side wall (72b). The bolt (31) performs fixing while a front end in a rotation axis direction of the first driving-side wall (71b) and a front end in the rotation axis direction of the second driving-side wall (72b) face each other.

Transmission between a combustion engine with a crankshaft and a compressor element with driven shaft, whereby this transmission includes a housing and at least one driven gear and driveshaft with a drive gear, wherein the driveshaft of the transmission is connected to the crankshaft of the combustion engine by means of a rigid coupling, and the distance between the driveshaft and the driven shaft is greater than a sum of the radii of a plurality of pitch circles of the drive gear and the driven gear.

Power systems and enclosures having improved cooling air flow are disclosed. An example power system includes an enclosure; an air inlet location at a first location on an exterior of the enclosure to permit intake of air from the exterior of the enclosure to an interior of the enclosure; an air exhaust location at a second location on the exterior of the enclosure to exhaust the air taken in through the air inlet location; and an air routing path defined by the enclosure to direct the air from the air inlet location to the air exhaust location, in order: through one or more first compartments in the enclosure, the one or more first compartments containing at least one of a compressor, a generator, or power conversion circuitry; and through one or more second compartments, the one or more second compartments comprising an engine and a muffler.

The present invention relates to a cluster assembly and an electric compressor comprising the same and, more particularly, to a cluster assembly which has an improved insulation structure and is convenient to install, and an electric compressor comprising the same. More specifically, the cluster assembly comprises: three terminals; a detachable cluster including first to third coil fixing portions each having a coil insertion hole into which a coil end is insertedly formed therein, and first to third terminal receiving portions having a space formed therein so as to be spaced apart from the first to third coil fixing portions by a predetermined distance in the longitudinal direction of the coil and receive the terminals; and a cluster body which is coupled to one side surface of an electric motor in an axial direction and is formed hollow in the center thereof along the outer circumferential surface of a stator and which includes a cluster insertion portion formed corresponding to the shape of the detachable cluster so that the detachable cluster can be inserted in a horizontal direction.

A supercharger includes a main housing, a front cover coupled to the main housing and having an inner portion received within the main housing, a drive coupling assembly arranged between an input shaft and a rotor shaft, and a coupling sleeve disposed about the drive coupling.