System and method for vehicle engine cranking
CA 2458407 A1 · Owner: International Truck Intellectual Property Company, Llc · Inventors: Marshall, Brian P.; Rodgers, David V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of boot strap starting a diesel having a plurality of cylinders (32) comprises the steps of initiating cranking the diesel and responsive to cranking forcing exhaust valves (34) for all cylinders (32) open during compression strokes. Thereafter, responsive to the engine rotational speed signal exceeding a first threshold, an exhaust valve (34) for one cylinder (32) is allowed to open and close in synchronous with movement of a piston (74) in the cylinder (32). Further responsive to engine rotational speed exceeding a second threshold higher than the first threshold cranking is , discontinued and the remaining exhaust valves (34) are allowed to open and close in synchronous …
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 August 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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.