Measurement of fuel quality and economy
OwnerGeorge A. Beauchemin, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A device and a process for measuring fuel quality and/or economy is provided by this invention. The specific gravity of fuel is measured by any suitable means such as a hydrometer; the temperature of fuel is measured by another means, such as, a thermometer. Third means responsive to the measurements obtained by first two means converts the specific density of the fuel to specific density at a predetermined temperature and from that to fuel quality. The fuel quality can then be converted to fuel economy when the price of fuel is known. Alternatively, specific density of fuel corrected to the specific density at a predetermined temperature can be converted directly to fuel economy if the price of the fuel is known. For conversions described above suitable nomographs can be used.
Claims12
A device for determining the economy of a fuel comprising:
- first means for obtaining a reading of specific gravity of the fuel;
- second means for obtaining a reading of temperature of the fuel;
- a price of the fuel scale;
- a caloric value per dollar scale;
- and
- nomograph means for converting the reading of the specific gravity of the fuel appearing on said first means, the reading of temperature of the fuel appearing on said second means and price of the fuel on said price scale to caloric value per dollar on said caloric value per dollar scale.
A device for determining the economy of a fuel comprising:
- first means for obtaining a reading of specific gravity of the fuel;
- second means for obtaining a reading of temperature of the fuel;
- a price of the fuel scale;
- a fuel caloric value per dollar scale;
- first aligning means for forming a first nomograph by aligning readings of said first and said second means to obtain a reading of specific gravity of the fuel, corrected to a predetermined temperature;
- second aligning means for forming a second nomograph by aligning the reading of the corrected specific gravity of the fuel with the price of the fuel on the price of the fuel scale to obtain fuel caloric value per dollar on said fuel caloric value per dollar scale, the readings of said first and second means, the price scale and the fuel caloric value per dollar scale being so arranged with respect to one another as to allow the formation of said nomographs satisfying an equation expressing the corrected density as a function of temperature and measured specific gravity, and the equation expressing caloric value of fuel per dollar as a function of temperature and corrected specific gravity of said fuel, respectively.
A process for determining the fuel economy comprising the following steps:
- (a) obtaining a temperature reading of the fuel on a temperature scale;
- (b) obtaining a specific gravity of the fuel reading on a specific gravity scale;
- (c) aligning temperature and specific gravity readings to form a first nomograph giving the specific gravity of the fuel corrected to a standard predetermined temperature on a corrected specific gravity scale;
- (d) aligning the value of corrected specific gravity obtained in step "C" with the price of the fuel on a price scale to form a second nomograph giving the caloric value of fuel per dollar on a caloric value of fuel per dollar scale.
Dependencies are inferred from the claim text.