Automobile efficiency meter
First Claim
Patent Images
1. An automobile efficiency meter comprising:
- a vehicle speed signal pick up device for picking up said signal with a speed sensor and inputting it into a microprocessor;
an engine revolution speed signal pick up device for picking an engine revolution speed signal with an engine revolution speed sensor and inputting it into said micro processor;
the microprocessor for receiving said speed signal and said engine revolution signal and outputting an evaluation signal to a conversion and driving circuit after comparative analysis with a referential slope;
the conversion and driving circuit for inputting said evaluation signal and exhibiting the resultant analyzed information on a display device so as to remind the driver of the present automobile efficiency;
the display device for displaying said resultant analyzed information; and
a power supplier for providing a DC power for the aforesaid devices wherein, a speed frequency variable (s-hz) and an engine revolution speed frequency variable (R-hz) are individually defined as a general parameter and inputted into said microprocessor to obtain a referential slope(f=s-hz/R-hz), an actual slope value obtained from an actual speed and an actual engine revolution speed and added with a time axis parameter is compared with said referential slope value thereby obtaining an evaluated resultant value which is then displayed on said display device by said conversion and driving circuit.
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Abstract
Disclosed herein is an automobile efficiency meter which is capable of defining an optimistic efficiency zone by analyzing a speed-frequency (S-hz) variable and an engine revolution-frequency (R-hz) variable The driver is then informed about the vehicle condition by a pointer type or a digital type metering instrument, an indicator lighting unit, or a sounder thereby enabling him/her to keep the automobile in the best efficient condition so as to save fuel consumption and prolong the vehicle life.
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Citations
5 Claims
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1. An automobile efficiency meter comprising:
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a vehicle speed signal pick up device for picking up said signal with a speed sensor and inputting it into a microprocessor;
an engine revolution speed signal pick up device for picking an engine revolution speed signal with an engine revolution speed sensor and inputting it into said micro processor;
the microprocessor for receiving said speed signal and said engine revolution signal and outputting an evaluation signal to a conversion and driving circuit after comparative analysis with a referential slope;
the conversion and driving circuit for inputting said evaluation signal and exhibiting the resultant analyzed information on a display device so as to remind the driver of the present automobile efficiency;
the display device for displaying said resultant analyzed information; and
a power supplier for providing a DC power for the aforesaid devices wherein, a speed frequency variable (s-hz) and an engine revolution speed frequency variable (R-hz) are individually defined as a general parameter and inputted into said microprocessor to obtain a referential slope(f=s-hz/R-hz), an actual slope value obtained from an actual speed and an actual engine revolution speed and added with a time axis parameter is compared with said referential slope value thereby obtaining an evaluated resultant value which is then displayed on said display device by said conversion and driving circuit. - View Dependent Claims (2, 3, 4, 5)
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Specification