JPS60176820A - Vehicle and internal-combustion engine which may use plural kinds of fuels - Google Patents

Abstract

PURPOSE:To optionally use one of fuels having different properties, and as well to make the work load and fuel mileage substantially uniform even if any kind of fuel is selected and used, by providing a plurality of independent tanks storing therein various kinds of fuels, and a change-over means for selectively feeding one of fuels from the tanks to an internal-combustion engine. CONSTITUTION:There are provided an ethanol fuel tank 1 and a gasoline fuel tank 2 from which conduits 3, 4 are led to a change-over device 5 that is controlled to feed one of fuels mentioned above to a carburettor 7 through a manifold 6. Even in the carburettor 7 nozzles therein may be changed over another change-over device 8 so that fuel jetted from the selected nozzle is fed into an engine 9. Thereby in such an area that either one of two kinds of fuels alone may be available, the drive operation may be made without hindrance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle and an internal combustion engine that use multiple types of fuel with different properties, and particularly relates to a vehicle and an internal combustion engine that are equipped with a plurality of independent tanks and have approximately the same volume of each tank when traveling a mileage or running a certain amount of fuel. 1E1 is defined as ``C'', which relates to vehicles and internal combustion engines.

In recent years, due to high oil prices or instability in securing oil resources, various studies have been conducted on vehicles and internal combustion engines that use various alternative fuels. As a result, internal combustion engines or vehicles that can selectively use a plurality of fuels with different properties have been developed, and a carburetor for an internal combustion engine that can selectively use different types of fuel is disclosed in Japanese Patent Application No. 59, filed on the same date by the same applicant. -= and Japanese Patent Application No. 1983-.

In fact, in Brazil, in addition to regular gasoline, 1
Gasol made by mixing gasoline with 00% alcohol and around 10% alcohol is commercially available. However, in some regions, the types of fuel that can be sold may be limited, and in such situations it becomes necessary to add tanks for various types of fuel to the internal combustion engine or vehicle. . This situation is becoming more prevalent in other countries, especially during the transition period immediately after the emergence of new fuels to replace oil. Since the types of fuels are limited and it is conceivable that different types of fuels will continue to be used side by side even after step 1, development of a multi-fuel internal combustion engine equipped with multiple tanks so that any of the different types of fuel can be used freely. Yes, you will need a vehicle.

However, different fuels usually have different properties, and different fuels with the same volume or weight each have different amounts of heat, resulting in differences in the amount of work obtained, and the specific work υ Or, it is often difficult to calculate the amount of fuel required for the distance traveled, or conversely, to determine the amount of work or distance traveled from a different type of fuel that is heavy or heavy for a given volume. It's coming.

In the past, due to lack of awareness of such inconvenience, even if internal combustion engines or vehicles can use dissimilar fuel 111, they may not be able to be used in existing tanks that were inquired about by Party A for specific fuels. 11 in the space erased by the internal combustion engine or existing vehicle! A tank like that, or an existing U
It was only necessary to install a tank.

Various internal combustion engines that use different types of fuel have been devised and invented. It simply uses starting fuel and regular fuel separately, and the tank volume for starting fuel is generally relatively small, while the tank volume for regular fuel is usually the same size. . Therefore, it has not been possible to use an internal combustion engine or a vehicle using each of the different types of fuel for a certain period of time or for a certain distance.

Therefore, the main purpose of the present invention is to be able to freely use any of a plurality of different types of fuel, and to determine the amount of work or travel that can be obtained from that fuel, regardless of the type of fuel used. An object of the present invention is to provide an internal combustion engine and a vehicle whose distances are approximately the same.

Such an object of the present invention is to provide a vehicle that can use multiple types of fuel with different properties, which includes a plurality of independent tanks for different fuels, and an internal combustion engine that uses these fuels. and a switching means for selectively supplying fuel to the internal combustion engine from any one of the plurality of tanks, and the volume of each tank is determined so that approximately the same mileage is 1q for each fuel Y+1. and an internal combustion engine capable of using a plurality of types of fuel with different properties, the engine comprising a plurality of independent tanks for different fuels, and any one of the plurality of tanks described above. and a switching means for selectively supplying fuel to the internal combustion engine, the volume of each tank is determined such that the effective calorific value of each fuel is approximately equal. This is achieved by providing an internal combustion engine that achieves this goal.

In particular, when driving in areas where the types of fuel that can be purchased are limited, vehicles can be driven by refueling with any type of fuel, and even more than one. By looking at the overall amount remaining in the fuel tank, it is possible to easily and accurately determine the possible mileage with the remaining fuel.

Regarding internal combustion engines, even if they are not used mounted on a vehicle, if they are used as a power source for a generator or a pump, and are moved to a different area, 1q. The internal combustion engine can be operated without any problems using the fuel that is available, and by knowing the amount of fuel remaining in multiple tanks, the amount of work that the internal combustion engine can do or the operating time can be easily determined. .

The invention will now be described in detail with reference to specific embodiments and with reference to the accompanying drawings.

The accompanying drawings show an internal combustion engine that can use 100% alcohol and gasoline as the main fuels.

As shown in Table 1, the specific gravity, stoichiometric air-fuel ratio, and lower heating value of gasoline and ethanol are quite different, so it is not only difficult to use a common vaporizer, but also the same volume of gasoline and ethanol. ] - taken out from tanol 1η
There are t differences in the amount of work involved.

Therefore, when we calculate the volume ratio of gasoline and ethanol to a certain lower calorific value from Table 1, we find that it is approximately 6=4.

Ll-Human fuel ll+ Gasoline Ethanol (isooctane) Chemical formula (CH) C21-1501118 Specific gravity (20℃) (0,70) 0.790 Theoretical air-fuel ratio (Kgair/Kgfuel) (15,1) 9.0
Lower calorific value (cal/K9) (10600) 6400 Heating ratio to gasoline (1) 0.60 Therefore, as shown in Figure 1, the ethanol fuel tank 1 and gasoline have a volume ratio of approximately 6 = 4. and a conduit 3 led out from each tank.
．． 4 is connected to the switching device 5, and by operating the switching device,
Either one of the fuels can be supplied to the carburetor 7 via the collecting pipe 6. In the carburetor 7 as well, it is preferable that the nozzle inside the carburetor can be switched by another switching device 8 so that fuel discharged from an appropriate nozzle is supplied to the engine 9.

In this case, it is preferable that both switching devices 5.8 be made interlocked by some means.

An internal combustion engine with such a configuration or a vehicle equipped with such an internal combustion engine can be operated without problems even in areas where only one of the two types of fuel can be purchased. Furthermore, even if fuel is stored in both tanks at different ratios, the amount of work that can be done or the distance traveled can be easily determined. For example, if methanol is stored at 30% of its capacity in tank 1 and gasoline is stored at 20% of its capacity in tank 2, 30% of its capacity is stored in tank 2. % + 20% - 50% workload - 7 - Or it can be easily determined that the distance traveled is possible.

Although the present invention has been described above with reference to preferred embodiments, it is obvious that the present invention may be practiced with various modifications and changes. In addition to the combination of different fuels, for example methanol and gasoline, the invention is equally applicable to various other combinations of different fuels, consisting of liquid and/or liquefied gas fuels, as long as the internal combustion engine can use them.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are explanatory diagrams schematically showing the structure of an internal combustion engine according to the present invention. 1.2...tank 3.4...conduit 5...switching device 6...collecting pipe 7...carburizer 8...switching device 9...engine patent applicant Honda Motor Co., Ltd. Kai Ne I Agent Patent Attorney Yo Oshima - 8 - Procedural amendment (spontaneous) March 26, 1980 Patent Application No. 033697 2, Title of Invention Vehicle that can use multiple types of fuel and Internal Combustion Engine 3, Relationship with the person making the amendment Patent applicant name (532) Honda Motor Co., Ltd. 4, agent address 108 bundles, 5-30-16 Shiba, Minato-ku, Kyoto, increased by amendment Number of inventions: 0 7, Subject of amendment: Detailed explanation of the invention in the specification column 8, Contents of amendment: “Japanese Patent Application 1987-” and “Japanese Patent Application 1987-” on page 2, lines 14 and 15 of the specification ” to “Japanese Patent Application No. 59-033698 and Patent Application No. 3/1983
Corrected with No. 3699 J. -1 riri

Claims (1)

[Claims] (1) A vehicle that can use multiple types of fuel with different properties, including multiple independent tanks for the different fuels, an internal combustion engine that can use these fuels, and a vehicle that uses fuel from any of the multiple tanks. A vehicle comprising switching means for selectively supplying fuel to the internal combustion engine, and the volume of each tank is determined so that approximately the same mileage can be obtained with each fuel. (2> An internal combustion engine that can use multiple types of fuel with different properties, including multiple independent tanks for different fuels and selectively supplying fuel to the internal combustion engine from any of the multiple tanks. 1. An internal combustion engine, characterized in that the volume of each tank is determined so that the effective calorific value of each fuel is approximately equal.