An intercooler lid assembly for an intercooler supercharger system, comprising: an intercooler lid mountable to a supercharger housing; a plurality of intercooler cores coupled together, and mounted to and within the intercooler lid to cool supercharger air prior to receipt by an engine, wherein the intercooler lid assembly is pre-assembled and mounted onto the supercharger housing to install the intercooler lid assembly.

A compressor structure for turbochargers 1 including a scroll piece 20, a shroud piece 30 and a seal plate 40 assembled with each other in an axial direction, wherein the scroll piece 20 includes a penetration part 22 penetrating in the axial direction so as to constitute a discharge port 13 and a first intermediate wall surface 23 smoothly extending from an intake-side wall surface 21 to the discharge port 13, the shroud piece 30 includes an inner circumferential side wall surface 32, and the seal plate 40 includes a protruding part 42 provided with a second intermediate wall surface 43 extending from an outer circumferential side wall surface 41 and facing the first intermediate wall surface 23 so as to constitute an inner wall surface 14a of an intermediate part 14 through which the discharge port 13 and the scroll chamber 12 are communicated with each other.

A compressor structure for turbochargers 1 including a scroll piece 20, a shroud piece 30 and a seal plate 40 assembled with each other in an axial direction, wherein the scroll piece 20 includes a penetration part 22 penetrating in the axial direction so as to constitute a discharge port 13 and a first intermediate wall surface 23 smoothly extending from an intake-side wall surface 21 to the discharge port 13, the shroud piece 30 includes an inner circumferential side wall surface 32, and the seal plate 40 includes a protruding part 42 provided with a second intermediate wall surface 43 extending from an outer circumferential side wall surface 41 and facing the first intermediate wall surface 23 so as to constitute an inner wall surface 14a of an intermediate part 14 through which the discharge port 13 and the scroll chamber 12 are communicated with each other.

The present invention includes: a turbine wheel 24 that is attached to a rotating shaft 14 and that has a plurality of turbine blades in the circumferential direction; scroll passages 15Aa, 15Ab that are formed in a spiral shape on the outside of the turbine wheel 24, and that are formed by being divided into a plurality of sections in the circumferential direction, the passages communicating with each other at the position of the turbine wheel 24 disposed between respective tongue sections 15Ac, 15Ad; and threads 51 that are provided on an back facing surface 41 disposed so as to oppose the back surface of the turbine wheel 24, the back surface being on the axially opposite side from the turbine blade side, and the linear parts extending from starting points 51a near the tongue sections 15Ac, 15Ad toward the rotating shaft 14 side so as to control the passage of fluid between the back surface and the back facing surface 41.

The present invention includes: a turbine wheel 24 that is attached to a rotating shaft 14 and that has a plurality of turbine blades in the circumferential direction; scroll passages 15Aa, 15Ab that are formed in a spiral shape on the outside of the turbine wheel 24, and that are formed by being divided into a plurality of sections in the circumferential direction, the passages communicating with each other at the position of the turbine wheel 24 disposed between respective tongue sections 15Ac, 15Ad; and threads 51 that are provided on an back facing surface 41 disposed so as to oppose the back surface of the turbine wheel 24, the back surface being on the axially opposite side from the turbine blade side, and the linear parts extending from starting points 51a near the tongue sections 15Ac, 15Ad toward the rotating shaft 14 side so as to control the passage of fluid between the back surface and the back facing surface 41.

Methods and systems for operating an engine with an electrically driven compressor are described. In one example, a model in a controller determines one or more temperatures of the electrically driven compressor to establish a power output upper threshold that is not to be exceeded by the electrically driven compressor. Various actuators may be adjusted responsive to the power output upper threshold to reduce the possibility of electrically driven compressor degradation.

A turbo-compressor comprises a compressor wheel having an attachment arrangement for attaching the wheel to a drive shaft. The attachment arrangement includes an axially extending spigot internally radially located in a bore in the drive shaft and secured to the drive shaft by fastening means into the rear of the compressor wheel. Thus the compressor wheel expands and tightens into the shaft at speed. Furthermore, the nose of the compressor wheel is free to accept an aerodynamic profile.

A turbo-compressor comprises a compressor wheel having an attachment arrangement for attaching the wheel to a drive shaft. The attachment arrangement includes an axially extending spigot internally radially located in a bore in the drive shaft and secured to the drive shaft by fastening means into the rear of the compressor wheel. Thus the compressor wheel expands and tightens into the shaft at speed. Furthermore, the nose of the compressor wheel is free to accept an aerodynamic profile.

A forced exhaust system for increasing engine efficiency has an engine with at least one cylinder. The cylinder has a combustion chamber and a moveable piston. An intake port provides air/fuel/oil to the combustion chamber. An exhaust port is connected to the combustion chamber to remove exhaust gasses and uses an exhaust valve to control the exhaust timing. An exhaust device is connected to the exhaust port and lowers the pressure at the exhaust port which forcefully removes the products of combustion from the combustion chamber after ignition when the exhaust valve is open. By applying a vacuum to the exhaust port, the exhaust gases are removed quickly and utilizes more of the compression stroke than is possible in conventional engines. In this way, the user is able to control the intake and exhaust pressures independently in a two-stroke engine.

A forced exhaust system for increasing engine efficiency has an engine with at least one cylinder. The cylinder has a combustion chamber and a moveable piston. An intake port provides air/fuel/oil to the combustion chamber. An exhaust port is connected to the combustion chamber to remove exhaust gasses and uses an exhaust valve to control the exhaust timing. An exhaust device is connected to the exhaust port and lowers the pressure at the exhaust port which forcefully removes the products of combustion from the combustion chamber after ignition when the exhaust valve is open. By applying a vacuum to the exhaust port, the exhaust gases are removed quickly and utilizes more of the compression stroke than is possible in conventional engines. In this way, the user is able to control the intake and exhaust pressures independently in a two-stroke engine.