Abstract: According to one aspect, a vehicle control system. The control system includes a steering control coupled to at least one steerable wheel, the steering control having a first position, a second position and a plurality of positions therebetween. The control system also includes a steering sensor coupled to the steering control and configured to generate steering sensor signals based upon the position of the steering control. The control system also includes a control module coupled to the steering sensor, the control module configured to (i) record a first steering sensor signal value when the steering control is in the first position; (ii) record a second steering sensor signal value when the steering control is in the second position; and (iii) determine a current position of the steering control by comparing the first and second steering sensor signal values with a current steering sensor signal value.
Type:
Grant
Filed:
October 22, 2012
Date of Patent:
December 31, 2013
Assignee:
Acellerated Systems Inc.
Inventors:
Terence Wade Stone, Robert Gordon Lankin
Abstract: A hybrid electrical power assist system (EPAS) for an automotive vehicle that utilizes the advantages of a conventional EPAS system to provide power assist based upon several distinct sensor inputs, in a heavy duty vehicle that requires significantly more assistance forces than a conventional EPAS can provide. The hybrid system utilizes a hydraulic amplifier that is connected to receive the torque output from an EPAS motor actuator and responsively provide a fluid under differential pressure through a pair of high pressure lines to a steering piston.
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Abstract: A pump powered partly by a mechanical drive and partly by a pressurised fluid flow, offering energy savings up to 90% in reverse osmosis systems. The pump consists of one or more piston-in-cylinder assemblies. One face of each piston provides a pumping action while a pressurised driving fluid flow is applied to the opposite piston face, thus supplementing the drive force applied to each piston via a piston rod. Input and output of the pumped flow is controlled by pump valves of a non-return poppet type operated by the pumped flow. Input and output of the driving fluid is controlled by poppet-type valves controlled by connection to the pump valves. There are means to control piston movement relative to the cylinder and to the piston rod, and a two-part pump valve to simplify connection to the motor valves.
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