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:
Nov. 18, 1986
Filed:
Sep. 14, 1984
Robert J Kobayashi, Rancho Palos Verdes, CA (US);
The Garrett Corporation, Los Angeles, CA (US);
Abstract
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 controler 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.