The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2016
Filed:
Jun. 07, 2013
Orbital Australia Pty Ltd, Western Australia, AU;
Terran Ambrose Barber, Mount Hawthorn, AU;
John Howard Tubb, Bedfordale, AU;
Geoffrey Paul Cathcart, Mount Lawley, AU;
Robert Walter Frew, Scarborough, AU;
Donald Andrew Railton, Duncraig, AU;
Orbital Australia Pty Ltd, Balcatta, AU;
Abstract
An unmanned aerial vehicle (UAV) engine () lubrication system and lubrication oil heating strategy uses a solenoid actuated electric oil pump () to deliver lubrication oil to the engine from a lubrication oil reservoir () by energizing and de-energizing the solenoid () to operate a pump mechanism of the electric oil pump. A controller (ECU) () can control operation of the electric oil pump, the solenoid maintained energized for a required period of time to cause heating of the oil without continuously pumping the oil. An electric oil pump control strategy can maintain engine speed dependent minimum oil delivery rates, can heat the electric oil pump and oil through extended energized (ON) time of the solenoid, and, by varying the turn on time of the electronic oil pump based on sensed ambient temperature, long time periods can be used to ensure oil delivery for cold temperatures, and shorter times are permitted when necessary in order to reach maximum oil flow rate.