Device for calculating cruising range and method therefor
First Claim
1. A cruising distance calculation device provided witha fuel measurement means which measures stored fuel in a fuel tank when fuel is supplied to said fuel tank, a fuel injection measurement means which measures a fuel injection amount supplied to an engine, a running distance measurement means which measures a running distance of a vehicle, a remaining fuel calculation means which calculates remaining fuel by subtracting a fuel injection amount measured by said fuel injection measurement means from a stored fuel measured by said fuel measurement means, a fuel economy calculation means which calculates a fuel economy by dividing a running distance measured by said running distance measurement means by a fuel injection amount measured by said fuel injection measuring means, a cruising distance calculation means which calculates a cruising distance by multiplying a remaining fuel calculated by said remaining fuel calculation means by a fuel economy calculated by said fuel economy calculation means, and a refueling detection means which measures stored fuel in said fuel tank and calculates the difference between the stored fuel and the remaining fuel calculated by said remaining fuel calculation means, and when said difference is larger than a standard value, said cruising distance calculation means communicates to said fuel measurement means the fact that fuel is supplied into said fuel tank.
1 Assignment
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Accused Products
Abstract
A remaining fuel Z is calculated by subtracting a fuel injection amount J supplied to an engine 14 from stored fuel F measured by a fuel meter 12. A fuel economy Fm is calculated by dividing a running distance M of a vehicle by a fuel injection amount J. A cruising distance K is calculated by multiplying the remaining fuel Z and the fuel economy Fm.
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Citations
19 Claims
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1. A cruising distance calculation device provided with
a fuel measurement means which measures stored fuel in a fuel tank when fuel is supplied to said fuel tank, a fuel injection measurement means which measures a fuel injection amount supplied to an engine, a running distance measurement means which measures a running distance of a vehicle, a remaining fuel calculation means which calculates remaining fuel by subtracting a fuel injection amount measured by said fuel injection measurement means from a stored fuel measured by said fuel measurement means, a fuel economy calculation means which calculates a fuel economy by dividing a running distance measured by said running distance measurement means by a fuel injection amount measured by said fuel injection measuring means, a cruising distance calculation means which calculates a cruising distance by multiplying a remaining fuel calculated by said remaining fuel calculation means by a fuel economy calculated by said fuel economy calculation means, and a refueling detection means which measures stored fuel in said fuel tank and calculates the difference between the stored fuel and the remaining fuel calculated by said remaining fuel calculation means, and when said difference is larger than a standard value, said cruising distance calculation means communicates to said fuel measurement means the fact that fuel is supplied into said fuel tank.
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10. A cruising distance calculation method which comprises the steps of measuring stored fuel in a fuel tank when fuel is supplied to said fuel tank,
measuring a running distance of a vehicle and a fuel injection amount supplied to an engine, calculating a remaining fuel amount by subtracting a fuel injection amount supplied to said engine from a stored fuel amount in said fuel tank, calculating a fuel economy by dividing a vehicle running distance by a fuel injection amount supplied to said engine, calculating cruising distance by multiplying said remaining fuel and said fuel economy, measuring stored fuel in the fuel tank and measuring a difference between said stored fuel and said remaining fuel, and detecting the fact that fuel is supplied into the fuel tank when said difference is greater than a standard value.
Specification