Throttle bypass turbine with exhaust gas recirculation
AssigneeFord Global Technologies, LLC
InventorsJoseph Norman Ulrey, Daniel Joseph Styles, Karen Elizabeth Maceroni
Life of this patent
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Abstract
Various systems and methods are provided for controlling the temperature of outlet gasses from a throttle bypass turbine. In one embodiment, a method of operating a throttle bypass turbine comprises controlling a temperature of outlet gas flowing out of the turbine by routing the outlet gas through an exhaust gas recirculation heat exchanger positioned in an exhaust gas recirculation passage, the turbine coupled to an intake passage.
Claims20
A method of operating a throttle bypass turbine, comprising:
- routing outlet gas flowing out of the turbine through an exhaust gas recirculation heat exchanger positioned in an exhaust gas recirculation passage, the turbine coupled to an intake passage.
An internal combustion engine, comprising:
- an intake passage;
- an exhaust gas recirculation passage configured to route at least a portion of exhaust gas to the intake passage;
- a throttle bypass coupled to the intake passage at an inlet and to the exhaust gas recirculation passage at an outlet, the throttle bypass including a turbine;
- and
- a heat exchanger positioned in the exhaust gas recirculation passage downstream of the throttle bypass outlet and expelling the portion of the exhaust gas and outlet gas from the turbine.
A method of operating an internal combustion engine, comprising:
- determining a temperature of gasses flowing into an exhaust gas recirculation heat exchanger positioned in an exhaust gas recirculation passage;
- reducing gas flow through a turbine in fluidic communication with an intake passage by increasing a closing amount of a valve controlling the gas flow into the turbine if the temperature is less than a desired temperature;
- and
- increasing gas flow through the exhaust gas recirculation heat exchanger by increasing an opening amount of a bypass valve controlling gas flow into a bypass line bypassing exhaust gas around the exhaust gas recirculation heat exchanger if the temperature is greater than the desired temperature.
Dependencies are inferred from the claim text.