Engine torque calculation
CA 2452070 A1 · Owner: International Truck And Engine Corporation · Inventors: Lack, Adam C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A torque calculator (10) and method for providing real time data that measures net torque output of a running engine (100) in a motor vehicle. Gross torque production (24) is calculated using engine speed and fueling data. Torque losses due to accessories, pumping, and friction (22 26, 28, 30) are , calculated and subtracted from gross torque production and inertial torque is , also accounted for to yield engine net running torque. The engine net running torque data and engine speed data are processed according to a filter algorithm (94) that compensates the engine net running torque data for engine speed. Transmission shifting (112) is controlled by the speed-compensated engine net …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.