Method and system for water collection and usage on-board a vehicle

A method for a vehicle, comprising:

• collecting water, harvested from a first vehicle component when operating an engine at a first vehicle speed, at a first reservoir;
• collecting water, harvested from a second, different vehicle component when operating the engine at a second, different vehicle speed, at a second reservoir;
• and
• processing the water from the first reservoir differently than the water from the second reservoir before delivering the water to a vehicle location.

A vehicle system, comprising:

• an engine including an intake manifold and a cylinder;
• a water harvesting system including an extractor for dehumidifying ambient air, a first collector for collecting condensate from the intake manifold, a second collector for collecting condensate from a vehicle air conditioning unit, a third collector for collecting condensate from channels provided on a vehicle surface, and a reservoir system including a plurality of reservoirs;
• a water level sensor coupled to each of the plurality of reservoirs of the reservoir system;
• a tire nozzle for spraying water on a vehicle tire;
• a brake nozzle for spraying water on a brake pad;
• an injector for injecting water directly into an engine cylinder;
• a vehicle speed sensor;
• and
• a controller with computer readable instructions that when executed causes the controller to:
• during an engine start, and before reaching idle speed,
• operate the water generation system to selectively collect condensate at the first collector;
• and
• inject condensate from a first of the plurality of reservoirs coupled to the first collector into the engine cylinder via the injector based on knock sensor output;
• and
• after reaching idle speed,
• operate the water generation system to selectively collect condensate at the second and third collector;
• and
• deliver condensate a second of the plurality of reservoirs via the tire nozzle when vehicle speed is higher than a threshold speed, and via the brake nozzle when vehicle speed is lower than the threshold speed.