Invalidity dossier
US 8892291
Vehicle mass detection system
Current assignee: Ford Global Technologies LLC
Added 9/24/2026, 12:03:38 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 8,892,291 B2
Title: Vehicle mass detection system
Patent number / application: US 8,892,291 B2; application US 13/796,266; publication US 2014/0277867 A1.
Assignee: Ford Global Technologies LLC (original and current assignee as listed).
Inventors: Felix Nedorezov; Hong Jiang; Matthew John Shelton; Daniel Colvin; Zhengyu Dai; Roger Lyle Huffmaster.
Key dates: Priority/filing date 2013-03-12; publication of application 2014-09-18; granted 2014-11-18. Status is listed as Active, with an adjusted expiration of 2033-03-19 (status and dates presented as assumptions, not legal conclusions). Related filings: DE 102014203998.3 and CN 201410090870.2.
Purpose. The disclosure relates to techniques for detecting vehicle mass, and more particularly to controlling a vehicle that includes an electric machine based on the calculated mass. The excerpt frames this in the context of hybrid and electric vehicles (BEV, HEV, PHEV), describing each type's propulsion energy source.
Plain-language scope. Per the excerpt, a method of controlling a vehicle with an electric machine based on vehicle mass may include: while the speed of the electric machine is changing, measuring current consumed by the electric machine at two different instances of time; calculating the vehicle's mass based on those measured currents; and controlling vehicle operation according to the calculated mass. Vehicle systems controlled according to the calculated mass include a four-wheel-drive control system, transmission control system, stability control system, and/or brakes system. The excerpt further notes that a constant engine propulsive torque may be maintained while the electric machine speed is changing. Classifications include B60W 40/13 (load or weight), B60W 20/00 (hybrid control), and B60W 10/08 (electric propulsion control).
What the excerpt does not establish. The supplied text is explicitly an excerpt with omitted content. It does not provide the full claims, the complete detailed description, equations for the mass calculation, figures, or prior-art citations. It therefore does not establish claim scope, claim count, or the specific algorithms used.
Source: https://patents.google.com/patent/US8892291/en (fetched 2026-09-24).
Generated 10/1/2026, 9:32:05 PM
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Assignment history
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Prior art
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Obviousness
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Derivative works
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