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US 11,746,716 B1Granted
Methods and systems for turbine outlet temperature control
AssigneeFord Global Technologies, LLC
InventorsJason Martz, Waheed Alashe, Eric Matthew Kurtz, Paul Joseph Tennison
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for controlling a catalyst temperature. In one example, a method includes throttling in response to the catalyst temperature exceeding a threshold temperature. The throttling includes adjusting an intake throttle position to a more closed position. The throttling further includes increasing a turbine work extraction via adjusting a position of a plurality of turbine vanes to decrease a turbine outlet temperature.
Claims12
A method, comprising:
- during a condition that comprises combusting fuel via an engine and operating the engine at a high engine load, the high engine load comprising an engine speed greater than a threshold engine speed,
- adjusting a position of an intake throttle to a more closed position in response to a temperature of a catalyst exceeding a threshold catalyst temperature;
- and
- adjusting a position of a plurality of vanes of a turbine to a more closed position.
1 more element
A system, comprising:
- an engine;
- a turbocharger comprising a compressor coupled to a variable geometry turbine (VGT);
- an intake throttle arranged between the compressor and an intake manifold coupled to the engine;
- a catalyst arranged downstream of the VGT;
- and
- a controller comprising computer-readable instructions on memory thereof that when executed cause the controller to:
- during a first condition,
- adjust a position of the intake throttle from an initial position to a more closed position in response to a temperature of the catalyst being greater than or equal to a threshold temperature;
- and
- adjust a position of a plurality of vanes of the VGT to a more closed position,
- wherein the first condition includes combusting fuel via the engine and operating the engine at a high engine load, the high engine load comprising an engine speed greater than a threshold engine speed.
8 more elements
Dependencies are inferred from the claim text.