Abstract: A compressor wheel for a turbocharger includes first, second and third pluralities of blades formed around a central hub. Each of the second plurality of blades is disposed between adjacent blades from the first plurality of blades and extend a shorter distance than the first plurality of blades along the centerline of the central hub. Each of the third plurality of blades is disposed between adjacent blades from the first and second pluralities of blades, and extends a shorter distance than the second plurality of blades along the centerline of the central hub. Together, the blades are separated in sets, each set including a blade from each of the first, second and third pluralities in order with respect to any radial location around the compressor wheel as the compressor wheel rotates.

Abstract: A compressor for a turbocharger for use with an internal combustion engine includes a compressor wheel having a central hub having a centerline, a root portion, and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, the maximum distance being adjacent the end portion of the central hub. The plurality of blades includes a group of half-blades, the half-blades extending from the root portion of the hub to an area along the centerline that is between 60% and 65% of the maximum distance along the centerline. The plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade and at least one half-blade.

Abstract: A turbocharger for use with an internal combustion engine includes a compressor wheel having a central hub having a centerline, a root portion and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, the maximum distance being adjacent the end portion of the central hub. The plurality of blades further includes a group of partial-blades, the partial-blades extending from the root portion of the hub to an area along the centerline that is between 40% and 55% of the maximum distance along the centerline, and the plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade and at least one partial-blade.

Abstract: A compressor in a turbocharger for an internal combustion engine includes a compressor wheel that includes a central hub having a centerline, a root portion and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, a group of partial-blades extending to an area along the centerline that is between 40% and 55% of the maximum distance along the centerline, and a group of half-blades extending to an area along the centerline that is between 55% and 70% of the maximum distance. The plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade, at least one half-blade and at least one partial-blade.

Abstract: A turbocharger for use with an internal combustion engine includes a compressor wheel having a central hub having a centerline, a root portion and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, the maximum distance being adjacent the end portion of the central hub. The plurality of blades further includes a group of partial-blades, the partial-blades extending from the root portion of the hub to an area along the centerline that is between 40% and 55% of the maximum distance along the centerline, and the plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade and at least one partial-blade.

Abstract: A compressor for a turbocharger for use with an internal combustion engine includes a compressor wheel having a central hub having a centerline, a root portion, and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, the maximum distance being adjacent the end portion of the central hub. The plurality of blades includes a group of half-blades, the half-blades extending from the root portion of the hub to an area along the centerline that is between 60% and 65% of the maximum distance along the centerline. The plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade and at least one half-blade.

Abstract: A compressor wheel for a turbocharger includes first, second and third pluralities of blades formed around a central hub. Each of the second plurality of blades is disposed between adjacent blades from the first plurality of blades and extend a shorter distance than the first plurality of blades along the centerline of the central hub. Each of the third plurality of blades is disposed between adjacent blades from the first and second pluralities of blades, and extends a shorter distance than the second plurality of blades along the centerline of the central hub. Together, the blades are separated in sets, each set including a blade from each of the first, second and third pluralities in order with respect to any radial location around the compressor wheel as the compressor wheel rotates.

Abstract: A compressor in a turbocharger for an internal combustion engine includes a compressor wheel that includes a central hub having a centerline, a root portion and an end portion. A plurality of blades is formed around the central hub. The plurality of blades includes a group of full-blades extending from the root portion of the central hub up to a maximum distance from the root portion along the centerline, a group of partial-blades extending to an area along the centerline that is between 40% and 55% of the maximum distance along the centerline, and a group of half-blades extending to an area along the centerline that is between 55% and 70% of the maximum distance. The plurality of blades is organized in repeating sets of blades arranged around the compressor wheel, each repeating set including at least one full-blade, at least one half-blade and at least one partial-blade.

Abstract: In an embodiment, a method of a one-way anonymous communication system is provided. The method includes receiving a request from a first user via a first user interface to communicate one-way anonymously with a second user, and using a processor, relaying a one-way anonymous message from the first user to be received by the second user via a second user interface, wherein the one-way anonymous message discloses a second user identification to the first user while withholding a first user identification from the second user. In the embodiment, the first user and the second user are each members of the same online social network, and the first user and the second user have a contact request connection, and the contact request connection was formed by acceptance of a contact request between the first user's contact group and the second user's contact group.

Abstract: In at least one aspect the invention comprises a computer-implemented method comprising: (a) electronically receiving data regarding characteristics of a plurality of tax exempt municipal bonds; (b) electronically receiving data describing a plurality of rules for inclusion of the tax exempt municipal bonds in a municipal bond index; (c) constructing a municipal bond index by applying the rules to characteristics of the plurality of tax exempt municipal bonds; and (d) quoting a municipal swap having a reference index, wherein the reference index is the municipal bond index. Other aspects comprise related computer systems and apparatuses, as well as various embodiments.

Abstract: In at least one aspect the invention comprises a computer-implemented method comprising: (a) electronically receiving data regarding characteristics of a plurality of tax exempt municipal bonds; (b) electronically receiving data describing a plurality of rules for inclusion of the tax exempt municipal bonds in a municipal bond index; (c) constructing a municipal bond index by applying the rules to characteristics of the plurality of tax exempt municipal bonds; and (d) quoting a municipal swap having a reference index, wherein the reference index is the municipal bond index. Other aspects comprise related computer systems and apparatuses, as well as various embodiments.