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US 11,473,538 B2Granted
Methods and systems to decrease charge air cooler condensate
AssigneeFord Global Technologies, LLC
InventorAed Dudar
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for removing condensate form a charge air cooler coupled to an engine intake system. In one example, a method may include flowing heated air from a fuel vapor canister of an evaporative emissions control (EVAP) system through the charge air cooler to vaporize condensate in the CAC. The air is drawn in from atmosphere by operating an electric booster in a reverse direction and the air is heated at the canister by operating a canister heater.
Claims19
A method for an engine, comprising:
- operating an electric booster coupled to an intake system, upstream of a compressor, in a second, reverse direction generating a lower pressure in the intake system;
- and
- flowing heated air from a fuel vapor canister of an evaporative emissions control (EVAP) system through a charge air cooler (CAC) in the intake system to vaporize condensate in the CAC, the air heated at the fuel vapor canister by operating a canister heater.
A method for an engine in a vehicle, comprising:
- in response to conditions being met for cleaning of a charge air cooler (CAC) housed in an intake passage,
- operating a heater coupled to an evaporative emissions control (EVAP) system fuel vapor canister for a threshold duration;
- then operating an electric booster coupled to the intake passage, upstream of a compressor, in a reverse direction to generate a vacuum in the intake passage;
- and
- routing heated air through the CAC to remove condensate deposited in the CAC.
2 more elements
A system for a vehicle, comprising:
- an engine operable under boosted and natural aspiration conditions, and a controller storing instructions in non-transitory memory that, when executed, cause the controller to:
- during a first condition, operate an electric booster, via an electric motor powered by an on-board battery, in a first, forward direction to increase boost pressure in an engine intake system;
- and
- during a second condition, operate the electric booster, via the electric motor powered by the on-board battery, in a second, reverse direction to evacuate the engine intake system, and draw in heated air to the engine intake system from an evaporative emissions control system via a charge air cooler (CAC) housed in the engine intake system, the heated air removing accumulated condensate from the CAC, wherein the electric booster is coupled to the engine intake system upstream of a compressor.
1 more element
Dependencies are inferred from the claim text.