Gasoline methanol

J. V. D. Weide and R. J. Wineland, "Vehicle Operation with Variable Methanol/Gasoline Mixtures," 6th Int. Symp. on Alcohol Euels Technology (Ottawa, Canada, May 21—25, 1984), Vol. 3. 

Methanol is more soluble in aromatic than paraffinic hydrocarbons. Thus varying gasoline compositions can affect fuel blends. At room temperature, the solubiUty of methanol in gasoline is very limited in the presence of water. Generally, cosolvents are added to methanol—gasoline blends to enhance water tolerance. Methanol is practically insoluble in diesel fuel. 

Isopropanol is a colorless liquid having a pleasant odor it is soluble in water. It is more soluble in hydrocarbon liquids than methanol or ethanol. For this reason, small amounts of isopropanol may be mixed with methanol-gasoline blends used as motor fuels to reduce phase-separation problems. ... 

Good methanol/gasoline fuel permeation resistance together with clearly defined MPAPVA and MPA laminar structures were found in containers blow-molded from PE/PMPAPVA and PE/MPA blends, respectively, with an optimum CP of about 20 wt% [302],... 

Cost Is about 10-12/GJ for both methanol and synthetic gasoline for transportation usage. The additional conversion costs of methanol to gasoline by the Mobil process roughly balance the distribution and usage costs of methanol/gasoline blends. 

Methanol Blends with Gasoline. A more probable development is the introduction of a methanol/gasoline blend. This fuel requires no modifications to existing car engines, and can use the existing distribution network. It could therefore act as a stepping stone between gasoline and 100% methanol. 

These considerations are particularly important in the area of alternative automotive fuel combustion. Methanol/gasoline mixtures are now recognized as an important alternate fuel candidate for use in conventional engines as well as for future automobile power plants (3). Large scale experiments are being conducted in Germany and the U.S., and... 

This chapter presents a relatively unbiased evaluation of the advantages and disadvantages of methanol/gasoline blends as fuels for spark ignition engines. The emphasis is on the use of these blends as possible fuels for. the existing and near-future U. S. auto population. The evaluation is divided into three basic areas ... 

Fuel research engine evaluation of the performance and emissions of methanol/gasoline blends at equivalent operating conditions to determine any benefits from the slightly altered fuel chemistry. 

Vehicle tests to evaluate the performance, emissions, and fuel economy of methanol/gasoline blends in current and near-future vehicles. 

Phase I—Chassis Dynamometer Tests. A 1.3-L engine equipped with a four-speed automatic transmission and complete drive system was calibrated to meet 1974 emissions standards using Indolene reference fuel. This standardized apparatus was then used in conjunction with the federal emissions test procedure to evaluate the performance of methanol/gasoline blends. Results of the single cylinder test program and preliminary evaluations with the chassis dynamometer system indicated that blends should be limited to 10% methanol or less to avoid drive-ability and other problems. A complete discussion of the apparatus and test procedures is given in Ref. 9. 

The key words to the future of methanol/gasoline blends for automotive use are need and availability. Technically, the operation of methanol/gasoline blends in automotive engines is feasible with some associated problems. Economically, methanol is not yet competitive with gasoline produced from petroleum, hence the need has not been strongly established. Since the need or market is not established, the capital expenses involved in producing methanol from coal or garbage are not presently justified. However, if 40-60% of the crude oil used in the U.S. to produce petroleum products should suddenly become unavailable, the need would be very real. The necessity of compete evaluation of methanol and other alternate fuels is evident. 

Ingamells, J. C., Lind<] uist, R. J., Methanol-Gasoline Blends—A Fuel... 

Stamper, K. R. (1980). Evaporative Emissions from Vehicles Operating on Methanol/Gasoline Blends, Paper No. 801360. Society of Automotive Engineers, Detroit, MI, October. 

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