Title :
A petrol/alcohol ratio sensor for flexible-fuel vehicles
Author :
Pinnock, Robert A.
Author_Institution :
Lucas Adv. Eng. Centre, Solihull, UK
Abstract :
A sensor, operating as a variable capacitance cell, has been developed for determining the ratio of methanol to petrol in fuel mixtures, through the measurement of the dielectric constant. When operated as part of a Digital Autoplex circuit, the sensor provides an approximately linear output across the full range of petrol/methanol mixture ratios, and is insensitive to variations in conductivity. The sensor is suitable for flexible-fuel vehicles which in the longer term should lead to a reduction in automotive pollution
Keywords :
automotive electronics; chemical variables measurement; electric sensing devices; permittivity measurement; Digital Autoplex circuit; dielectric constant; flexible-fuel vehicles; linear output; petrol/alcohol ratio sensor; variable capacitance cell;
Conference_Titel :
Automotive Sensors, IEE Colloquium on
Conference_Location :
Solihull
