Pierburg Gmbh

Ulrich Remde

Gunter Hartel

Armin Schurfeld

Karl-Heinrich Losing

Dieter Thonnessen

Karl-Henrich Losing

Dieter Thonnesen

Process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine in which during the heating of a sample quantity of a fuel mixture of a conventional fuel and alcohol there is a delay in the temperature increase in the region of the boiling point of the alcohol, due to its heat of vaporization. The apparatus (a) detects this temperature region, which characterizes the type of alcohol in the mixture, and (b) determines the extend of the delay in the temperature increase which characterizes the percent admixture of the alcohol in the fuel mixture. The measurement values obtained during the vaporization are utilized to produce a correction signal in a control device to effect a change in the air-fuel ratio in the fuel mixture former of the internal combustion engine.

Process and apparatus for utilization of fuels with alcohol additives

A process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine which are characterized by the fact that at the present time comercial types of fuel have approximately the same molecular weights, which are clearly distinct from the molecular weights of methanol and ethanol. By complete vaporization of a sample volume of fuel, depending on the admixture of alcohol to standard fuel, different volumes of vaporized fuel samples are produced, or different pressures are obtained if the volume is constant. Based thereon and on the sample temperature a correction signal is formed which is characterized by the alcohol and its content in the sample (as compared with reference values stored in a control device), and the correction signal can be utilized to regulate the engine control variables.

Growing community of inventors

Meerbush, Germany

Ulrich Remde