![]() In cooperation with Ferrari, Magna has developed the 8-speed 8DCL900 dual-clutch transmission for a new generation of high-performance engines. Transmission Performance – the 8DCL900 High-End Dual Clutch Transmission In addition to this, the configuration with just four mechanical gears is beneficial to both the shaft center distance and the axial length of the transmission, offering advantages in terms of weight and package size that also benefit fuel consumption for the applications included in the investigation. However, a comparison with a seven-speed, dual-clutch transmission with no winding path gears in a B-segment vehicle showed that the advantages and disadvantages balance out: Since there are only four physical gearwheel pairs, the slightly higher losses caused by the doubled gearwheel meshing are compensated for by much lower bearing and churning losses. This is less relevant to the first gear because it is only used for vehicle launch, but it is of great importance for the highest transmission speed – the 6th gear. One important question is, whether winding path gears do increase mechanical loss. These two speeds are established through winding path gears, where the bridge connects the two transmission sections to form an additional transmission path. This is required to provide the logical speeds 1 and 6 (which the DHD does not need due to the wide e-machine power spread). Aside from ‘dropping’ the e-machine, inverter, etc., the only difference inside the transmission is an additional half-shaft for the reverse gear and an additional synchronizer that acts as a bridge. The DCT Eco dual-clutch transmission uses the same gear set as the DHD Eco, thus remaining a simply designed four-speed transmission in ‘physical’ terms. Part of the new DHD/HDT/DCT family - Dual-Clutch Transmission with six speeds Its recuperation power is much higher than that of 48V P0 hybrid solutions, and it enables electric drive and maneuvering at lower speeds. ![]() ![]() Thanks to its P2.5 architecture, it offers the perfect compromise between power and weight/package. We expect to see increasing numbers of 48V hybrid solutions in this segment in the near future. Its short axial length makes it especially useful for transverse hybrid applications with limited installation space, which are common in the B-segment. Since the combustion engine is the dominant drive source for this model (unlike the DHD, where the main power comes from the e-motor), the HDT relies on the same gear set as the DCT, with four physical gears and six effective speeds, as well as the additional half-shaft for reversing.įunctionally speaking, the HDT Eco is a ‘classic’ add-on hybrid transmission, but it again transfers the lower complexity of the DHD to mild hybrid use. Thanks to the shorter e-motor with a peak output of 25 kW, this inverter position does not make the overall length of the transmission longer than the DCT model. Like the DHD Eco, this includes the e-motor in a P2.5 configuration it can be distinguished from its high-voltage cousin by its side-mounted inverter. Part of the new DHD/HDT/DCT family - 48V hybrid transmission with six speedsīased on the DCT Eco, one of the three products in the series is the HDT Eco for mild hybrid applications. These systems even enable functions like autonomous electric parking. Mild hybrid systems also achieve improved driving dynamics through electric torque vectoring and traction support. Such systems support high-volume applications of electrified drivelines as well as fleet average targets at reasonable costs. Our field-tested mild hybrid systems provide an answer to multiple existing challenges, like legislation driven CO2 reduction and high-cost pressures. With the purpose of tailoring to global market needs, Magna supports this development with innovative, efficient, and cost effective advanced all-wheel drive (AWD) and four-wheel drive systems (4WD), in addition to disconnect systems, manual transmissions (MT), dual-clutch transmissions (DCT), and mild hybrid solutions (HDT 48V). With this expertise, our innovations contribute to the overall performance of the vehicle with any type of powertrain, always pushing to the next level of CO2 emissions reduction. Being a long-term premium supplier for the global automotive industry, we have broad experience and a unique market position. Therefore, Magna continues to work intensively on efficiency improvement of all conventional and mild hybrid drivetrain solutions. Although market trends show a clear shift towards electrified vehicles, the share of conventional powertrain systems will still be globally significant during the next decade.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |