| 摘要 |
A digital fuel rate monitor apparatus for vehicles which apparatus measures signals proportional to units of fuel flow volume and signals proportional to distance of vehicle travel and electronically relating such signals to effect digital readout in miles per gallon. The apparatus is characterized by a positive displacement flow volume monitoring cylinder that includes a low friction piston and seal arrangement and associated control apparatus which are adapted to reveal piston position with respect to the metering cylinder in a highly accurate manner.
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