Patent ID: 9080503
Filing Date: 2015-07-14
Classification: F02B,Y02T

Abstract:
1. A hydraulically driven forced air induction system operative to boost inlet air pressure of a vehicle combustion system, said system comprising: a centrifugal compressor operative to compress combustion system inlet air; a first positive displacement hydraulic motor including an output drive shaft drivingly engaging said centrifugal compressor through a speed increaser mechanism operative to drive said centrifugal compressor at a rotational rate exceeding the rate of said first motor output drive shaft; a second positive displacement hydraulic motor including an output drive shaft arranged to engage and drive said speed increaser mechanism to drive said centrifugal compressor at a rotational rate exceeding the rate of said second motor output drive shaft; and a hydraulic control circuit operative to change the output speed of the speed increaser mechanism to the compressor as a function of vehicle demand by restricting inlet flow to either or both of said motors and/or bypassing flow around either or both of said motors, wherein said hydraulic control circuit includes a flow control and a pressure relief mechanism operable to host a hydraulically assisted steering system positioned in series configuration downstream of said first and second positive displacement hydraulic motors and series or parallel restrictions associated with said forced air induction system.