F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
23/21, 60/9
F02B 37/10 (2006.01) F02B 37/14 (2006.01) F02B 39/08 (2006.01)
Patent
CA 1259804
HYDRAULIC ASSIST TURBOCHARGER SYSTEM ABSTRACT OF THE DISCLOSURE An improved hydraulic assist turbocharger system is provided of the type having an hydraulic turbine for supplementally driving a turbocharger during selected engine operating conditions when supplemental air flow to the engine is required. The improved system is adapted for improved engine starting during cold weather conditions by increasing the pressure of hydraulic fluid supplied to the hydraulic turbine during engine cranking and/or decreasing the viscosity of said hydraulic fluid, thereby accelerating the turbocharger rapidly to a rotational speed for supplying sufficient air flow to the engine for starting purposes. In one form, the improved system further includes a pilot controller for regulating supply of hydraulic fluid to the hydraulic turbine to control engine air inflow, wherein the pilot controller is responsive to command signals from a master control unit which also controls engine fuel flow in accordance with a predetermined air-fuel ratio schedule throughout a range of engine operating conditions.
490350
Alliedsignal Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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