The Valeo Group has announced that it has acquired the Variable Torque Enhancement System (VTES) of Controlled Power Technologies' Variable Torque Enhancement System (VTES). The acquisition of this business is part of its strategy to reduce carbon dioxide emissions. After the acquisition of CPT's VTES business, Valeo will become the first auto parts supplier to supply customers with a series of electric superchargers. Unlike conventional exhaust gas-driven turbochargers, the electric supercharger uses a switched reluctance motor to drive and the reaction speed is greatly increased. CPT's VTES electric supercharger is independent of engine speed and can operate efficiently at low engine speeds. In addition, the electric booster is small and easy to install. In conjunction with Valeo's energy recovery system, the electric supercharger will provide highly competitive hybrid technology solutions that significantly reduce fuel consumption.
Die casting is a Aluminium or Zinc metal casting process that is characterized by forcing nolten metal under high pressure into a die mold cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mould during the process. Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminium, magnesium, lead, pewter, and tin-based alloys. Depending on the type of metal being cast, a hot- or cold-chamber machine is used.
The casting equipment and the metal dies represent large capital costs and this tends to limit the process to high-volume production. Manufacture of parts using die casting is relatively simple, involving only four main steps, which keeps the incremental cost per item low. It is especially suited for a large quantity of small- to medium-sized castings, which is why die casting produces more castings than any other casting process. Die castings are characterized by a very good surface finish (by casting standards) and dimensional consistency.
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