Control systems and methods for super turbo-charged engines
First Claim
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1. A method of controlling airflow of an engine system, comprising:
- determining a supercharger operating mode of a supercharger and a turbocharger operating mode of a turbocharger based on engine load of the engine system;
selectively generating a control signal to control a turbine of the turbocharger to adjust a compression of air by a compressor based on the turbocharger operating mode; and
selectively generating a control signal to control a supercharger bypass valve based on the supercharger operating mode, the supercharger bypass valve disposed between the turbocharger and the supercharger in the engine system;
wherein controlling the turbine of the turbocharger permits the compression of air by the compressor of the turbocharger as a function of at least one of an engine airflow requirement and a pressure requirement when the turbocharger operating mode is a closed loop mode; and
wherein controlling the turbine of the turbocharger restricts the compression of air by the compressor of the turbocharger as a function of engine load and engine speed when the turbocharger operating mode is an open loop mode.
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Abstract
A method of controlling airflow of an engine system is provided. The method includes determining a supercharger operating mode and a turbocharger operating mode based on engine load; selectively generating a control signal to a turbocharger based on the turbocharger operating mode; and selectively generating a control signal to a supercharger bypass valve based on the supercharger operating mode.
22 Citations
18 Claims
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1. A method of controlling airflow of an engine system, comprising:
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determining a supercharger operating mode of a supercharger and a turbocharger operating mode of a turbocharger based on engine load of the engine system; selectively generating a control signal to control a turbine of the turbocharger to adjust a compression of air by a compressor based on the turbocharger operating mode; and selectively generating a control signal to control a supercharger bypass valve based on the supercharger operating mode, the supercharger bypass valve disposed between the turbocharger and the supercharger in the engine system; wherein controlling the turbine of the turbocharger permits the compression of air by the compressor of the turbocharger as a function of at least one of an engine airflow requirement and a pressure requirement when the turbocharger operating mode is a closed loop mode; and wherein controlling the turbine of the turbocharger restricts the compression of air by the compressor of the turbocharger as a function of engine load and engine speed when the turbocharger operating mode is an open loop mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling airflow within an engine system, comprising:
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a supercharger bypass valve disposed between a turbocharger and a supercharger of the engine system; and an electronic control system including a non-transitory computer storage medium having stored data of executable instructions to; determine a turbocharger operating mode of the turbocharger and a supercharger operating mode of the supercharger based on an engine load; selectively generate a control signal to control a turbine the turbocharger to adjust a compression of air by a compressor based on the turbocharger operating mode; and selectively generate a control signal to control the supercharger bypass valve based on the supercharger operating mode; wherein when the turbocharger operating mode is a closed loop mode, the control signal to control the turbine of the turbocharger permits the compression of air by the compressor of the turbocharger as a function of at least one of an engine airflow requirement and a pressure requirement; and wherein when the turbocharger operating mode is an open loop mode, the control signal to control the turbine of the turbocharger restricts the compression of air by the compressor of the turbocharger as a function of the engine load and an engine speed. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification