# US 8,769,949 B2 · Superturbocharger control systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,769,949 B2 - Document ID: US8769949B2 - Status: Granted - Kind: B2 - Application number: 13/191,407 - Filed: 2011-07-26 - Published: 2012-07-26 - Granted: 2014-07-08 - Earliest claimed: 2010-07-26 - Assignees: VanDyne SuperTurbo, Inc. - Applicants: Ed VanDyne; Jared William Brown; Volker Schumacher; Christopher J. Chadwell - Inventors: Ed VanDyne; Jared William Brown; Volker Schumacher; Christopher J. Chadwell - Web page: https://patentgrep.com/patent/US8769949B2 ## CPC - F02B 37/105: {exhaust drive and pump being both connected through gearing to engine-driven shaft} - F02B 37/14: {Control} of the alternation between {or the operation of} exhaust drive and other drive of a pump, e.g. dependent on speed - F02B 39/04: Mechanical drives; Variable-gear-ratio drives (non-mechanical pump drives having variable gear ratio F02B39/08) - F02D 41/023: {in relation with the gear ratio shifting (conjoint control for improving gear change B60W30/19)} - F02D 2041/026: {using an external load, e.g. by increasing generator load or by changing the gear ratio} - Y02T 10/12: Improving ICE efficiencies - Y10T 74/18544: Rotary to gyratory - Y10T 74/18552: Unbalanced weight - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Disclosed is a control system and method for controlling a superturbocharged engine system in various operation modes. Throttle control mode may idle the superturbocharger during low and medium engine loads, so that boost is not created in the intake manifold. During high engine load conditions (open throttle), boosting occurs in response to the driver, operator, or control system requesting increased engine loads. For transient control mode, the control system may respond to transient conditions in response to engine speed and load so that the engine does not bog down or overcome vehicle traction limits. The control system may also predict future operating points. ## Claims ### Claim 1 A method of controlling a superturbocharged engine system comprising: detecting engine speed of said engine system; detecting engine load of said engine system; and, controlling a rate of change of an effective drive ratio of a continuously variable transmission in response to said engine speed and load so that a change in engine speed associated with the change in said effective drive ratio of said continuously variable transmission is within a threshold amount, wherein said continuously variable transmission is controlled by at least one of: rotational mechanical energy to and from a crankshaft of said engine system; and, rotational mechanical energy to and from a shaft coupling a turbine and a compressor of said superturbocharger. ### Claim 2 (depends on 1) The method of claim 1 wherein said process of controlling said rate of change of continuously variable transmission comprises controlling said continuously variable transmission with an electrical control signal. ### Claim 3 (depends on 2) The method of claim 2 further comprising: detecting a reduction of said engine speed; and limiting said rate of change of said effective drive ratio in response to detecting said reduction of said engine speed. ### Claim 4 (depends on 1) The method of claim 1, further comprising: using speed dip detection to select said rate of change of said effective drive ratio. ### Claim 5 An engine system comprising: a superturbocharger comprising: turbine means for receiving exhaust gases from said engine system; compressor means, coupled to said turbine means with a turbo-shaft, for generating a source of compressed air; a continuously variable transmission coupled to said turbo-shaft and said engine; and, controller means, coupled to said continuously variable transmission means, for controlling said superturbocharger in response to an indicator of torque capacity so that a torque output by said engine system does not exceed a torque associated with said indicator of torque capacity. ### Claim 6 An engine system comprising: an engine; a superturbocharger comprising: turbine means for receiving exhaust gases from said engine system; compressor means coupled to said turbine means with a turbo-shaft, for generating a source of compressed air; a continuously variable transmission coupled to said turbo-shaft and said engine; and, a controller coupled to said continuously variable transmission, for controlling said superturbocharger to control a rate of change of an effective drive ratio of said continuously variable transmission means in response to an engine speed so that a change in engine speed associated with said rate of change in said effective drive ratio of said continuously variable transmission is within a threshold amount. ### Claim 7 An engine system comprising: a superturbocharger comprising: a turbine that receives exhaust gases from said engine system; a compressor coupled to said turbine with a turbo-shaft, that generates a source of compressed air; a continuously variable transmission coupled to said turbo-shaft and said engine; and, a controller coupled to said continuously variable transmission that controls said superturbocharger to control a rate of change of an effective drive ratio of said continuously variable transmission in response to an engine speed so that a change in engine speed associated with the change in said effective drive ratio of said continuously variable transmission is within a threshold amount. ### Claim 8 (depends on 7) The engine system of claim 7 wherein said continuously variable transmission is coupled to a crankshaft of said engine. ### Claim 9 (depends on 8) The engine system of claim 8 wherein said controller is coupled to said continuously variable transmission with an electrical control signal. ### Claim 10 An engine system comprising: a superturbocharger comprising: a turbine that receives exhaust gases from said engine system; a compressor coupled to said turbine with a turbo-shaft, that generates a source of compressed air; a continuously variable transmission coupled to said turbo-shaft and said engine; and, a controller coupled to said continuously variable transmission that controls said superturbocharger in response to an indicator of torque capacity so that a torque output by said superturbocharged engine system does not exceed a torque associated with said indicator of torque capacity. ### Claim 11 (depends on 10) The engine system of claim 10 wherein said continuously variable transmission is coupled to a crankshaft of said engine. ### Claim 12 (depends on 10) The engine system of claim 10 wherein said indicator of torque capacity is received by a traction control system. ### Claim 13 (depends on 10) The engine system of claim 10 wherein said controller controls a rate of change of said continuously variable transmission with an electrical control signal.