Browse Prior Art Database

Publication Date: 2016-Mar-17
Document File: 1 page(s) / 204K

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The Prior Art Database

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Fuel can be heavy (6.5 lb/gallon) and is a variable factor that can negatively impacts fuel economy in cars. This is especially true in HEVs where electric power is used to propel the car.If the user always puts in a full tank of gas, in some PHEV cars, this unused fuel can be as much as 3% of the total vehicle weight.This adds to the average weight to be propelled through either gasoline or electric energy to move the vehicle around (including A/C and heat). Fuel also ages over time if PHEV is driven in only electric mode. Fuel loses volatility and becomes corrosive over time which can make cold starts long and emit more pollutants. Some HEVs have special fuel aging routines that force engine on to consume old fuel (180 days). Aged fuel is also a noise factor for some OBDII monitors. Realizing that fuel deadweight negatively impacts vehicle's energy efficiency, PHEV users may do the following: remove the spare tire, put as little fuel inside the tank, and limit belongings they carry for each trip.


Ideally, fuel tank should only hold as much fuel as customer needs for the route based on planned route and user historical habits. This method uses a prediction model to estimate how much minimal and optimal fuel amount the user needs for the upcoming trip. The model takes as inputs:Fuel efficiency, Refueling frequency, total cost, geographical/brand preferences. The model learns the user's actual energy usage, and modifi...