{"id":83995,"date":"2026-07-16T12:12:04","date_gmt":"2026-07-16T10:12:04","guid":{"rendered":"https:\/\/www.tgm.solutions\/?p=83995"},"modified":"2026-07-16T12:15:13","modified_gmt":"2026-07-16T10:15:13","slug":"the-lightweight-directly-electrified-bike-system","status":"publish","type":"post","link":"https:\/\/www.tgm.solutions\/en\/leichtbaugarage\/das-leichte-direkt-elektrifizierte-radsystem\/","title":{"rendered":"The lightweight, directly electrified wheel system"},"content":{"rendered":"

The system developed by Astemo Direct Electrified Wheel System<\/strong> is a compact and lightweight drive system for battery electric vehicles (BEVs) that integrates an electric motor, an inverter, and a brake into a single wheel module. Unlike conventional electric vehicles, which use a central electric motor, drive shafts, and a differential, this direct-drive system transmits torque directly to each individual wheel.<\/p>\n\n\n\n

This architecture simplifies the powertrain and opens up new possibilities for vehicle integration, chassis design, and interior layout. Most importantly, however, it addresses one of the biggest challenges of in-wheel motors\u2014minimizing the increase in unsprung mass.<\/p>\n\n\n\n

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Image source: Astemo. (Astemo is cited as an industry example. TGM has no business or organizational ties to Astemo.)<\/em><\/p>\n\n\n\n

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The technology<\/strong><\/h2>\n\n\n\n

The key innovation lies in the integration of several advanced technologies into a single, highly integrated system. Astemo uses a Halbach Array Permanent Magnet Configuration<\/strong>, to maximize the magnetic flux and increase the torque density. At the same time, high-density flat windings\u2014manufactured using a beam welding process\u2014reduce the size and weight of the electric motor.<\/p>\n\n\n\n

The motor, inverter, and braking system are fully integrated within the wheel and achieve a world-leading power density of 2.5 kW\/kg<\/strong>. By eliminating traditional drivetrain components such as the transmission, differential, and drive shafts, power is transmitted directly to the wheels with fewer mechanical losses. At the same time, installation space efficiency is significantly improved.<\/p>\n\n\n\n

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The lightweight construction aspect<\/strong><\/h2>\n\n\n\n

From the perspective of lightweight construction, this shows that Direct Electrified Wheel System<\/strong>, ...that integration at the system level often offers greater benefits than optimizing individual components. Although wheel hub motors generally increase the mass of the wheels, the high-performance motor with high power density and the integrated architecture significantly mitigate this drawback.<\/p>\n\n\n\n

At the same time, eliminating conventional powertrain components reduces the vehicle\u2019s overall weight, creates additional installation space, and enables more flexible chassis architectures. This system is an excellent example of a holistic lightweight design approach, in which multifunctional integration, high-performance electromagnetic design, and a simplified vehicle architecture work together to increase vehicle efficiency, reduce energy consumption, and support the development of the next generation of electric vehicles.<\/p>\n\n\n\n

The project illustrates that the greatest potential in lightweight construction often arises not from optimizing individual components, but from redesigning the entire vehicle system.<\/p>\n\n\n\n

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Read the full article here:<\/strong> https:\/\/www.astemo.com\/en\/news\/20250516-01\/<\/a><\/p>\n\n\n\n

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<\/p>","protected":false},"excerpt":{"rendered":"

Das von Astemo entwickelte Direct Electrified Wheel System ist ein kompaktes und leichtes Antriebssystem f\u00fcr batterieelektrische Fahrzeuge (BEVs), das Elektromotor, Wechselrichter (Inverter) und Bremse in einem einzigen Radmodul integriert. Im Gegensatz zu herk\u00f6mmlichen Elektrofahrzeugen, die einen zentralen Elektromotor, Antriebswellen und ein Differenzial verwenden, \u00fcbertr\u00e4gt dieses Direktantriebssystem das Drehmoment unmittelbar auf jedes einzelne Rad. Diese Architektur […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Astemo Direct Electrified Wheel \u2013 Innovative Leichtbau-Technologie f\u00fcr BEVs","_seopress_titles_desc":"Erfahren Sie mehr \u00fcber das leichte Direct Electrified Wheel System von Astemo mit integriertem Elektromotor, Inverter und Bremse f\u00fcr effiziente Elektrofahrzeuge.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"Astemo Direct Electrified Wheel \u2013 Leichtbau-Innovation f\u00fcr Elektrofahrzeuge","_seopress_social_fb_desc":"Das innovative Direct Electrified Wheel von Astemo integriert Motor, Inverter und Bremse in einem kompakten Radmodul und verbessert Effizienz, Bauraum und Leichtbau.","_seopress_social_fb_img":"https:\/\/www.tgm.solutions\/wp-content\/uploads\/image-29.png","_seopress_social_fb_img_attachment_id":83996,"_seopress_social_fb_img_width":956,"_seopress_social_fb_img_height":351,"_seopress_social_twitter_title":"Astemo Direct Electrified Wheel f\u00fcr moderne BEVs","_seopress_social_twitter_desc":"Kompakt, leicht und effizient: Das Direct Electrified Wheel von Astemo vereinfacht den Antriebsstrang und setzt neue Ma\u00dfst\u00e4be im Leichtbau von Elektrofahrzeugen.","_seopress_social_twitter_img":"https:\/\/www.tgm.solutions\/wp-content\/uploads\/image-29.png","_seopress_social_twitter_img_attachment_id":83996,"_seopress_social_twitter_img_width":956,"_seopress_social_twitter_img_height":351,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"Astemo,Direct Electrified Wheel,Direct Electrified Wheel System,Radnabenmotor,In-Wheel Motor,Elektrofahrzeug,BEV,Batterieelektrisches Fahrzeug,Leichtbau,Fahrzeugleichtbau,Elektromotor,Inverter,Bremssystem,Elektrischer Direktantrieb,EV Powertrain,Elektromobilit\u00e4t,Fahrzeugentwicklung,Automotive Engineering,Chassis Design,Ungefederte Masse,Halbach Array,Permanentmagnetmotor,Leistungsdichte,Fahrzeugarchitektur,Innovative Antriebstechnologie","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[21],"tags":[818,473,821,822,827,817,823,345,820,802,828,528,824,568,472,801,829,819,28,826,29,355,825,816,830],"class_list":["post-83995","post","type-post","status-publish","format-standard","hentry","category-leichtbaugarage","tag-astemo","tag-automotive-engineering","tag-bev","tag-bremssystem","tag-chassis-design","tag-direct-electrified-wheel","tag-direktantrieb","tag-elektrischer-antrieb","tag-elektrofahrzeug","tag-elektromobilitaet","tag-elektromotor","tag-energieeffizienz","tag-ev-powertrain","tag-fahrzeugarchitektur","tag-fahrzeugleichtbau","tag-fahrzeugtechnik","tag-halbach-array","tag-in-wheel-motor","tag-innovation","tag-inverter","tag-leichtbau","tag-leistungsdichte","tag-permanentmagnetmotor","tag-radnabenmotor","tag-zukunft-der-mobilitaet"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/posts\/83995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/comments?post=83995"}],"version-history":[{"count":1,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/posts\/83995\/revisions"}],"predecessor-version":[{"id":83997,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/posts\/83995\/revisions\/83997"}],"wp:attachment":[{"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/media?parent=83995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/categories?post=83995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tgm.solutions\/en\/wp-json\/wp\/v2\/tags?post=83995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}