CN101177633A

CN101177633A - Vehicle high(middle) ratio low-carbon alcohol gasoline

Info

Publication number: CN101177633A
Application number: CNA200710195526XA
Authority: CN
Inventors: 刘均涛; 周玉祥
Original assignee: LIU JUNTAO ZHOU YUXIANG
Current assignee: LIU JUNTAO ZHOU YUXIANG
Priority date: 2007-12-04
Filing date: 2007-12-04
Publication date: 2008-05-14

Abstract

The invention pertains to substitutive fuels of an internal-combustion engine and relates to high (moderate) proportion low carbon alcohol gasoline which is mixed and dissolved with additive and used in vehicles and is the alcohol hydrocarbon fuel mixed and dissolved by 15 percent (w) to 90 percent (w) low carbon alcohol (methyl alcohol, grain alcohol or mixture of methyl alcohol and grain alcohol with arbitrary rate), 5 percent (w) to 80 percent (w) gasoline and 5 percent (w) to 10 percent (w) additive. The invention has the advantages that the invention chiefly uses coalification fuel methyl alcohol, overcomes the defect that the engine structure needs to be modified for using the high (moderate) proportion methyl alcohol gasoline, reduces over dependence on the gasoline and reduces harmful substance discharge of gasoline when burning in the internal-combustion engine. Each physical and chemical index and discharge meets the gasoline and high (moderate) proportion low carbon alcohol gasoline standards and discharge standards stipulated by the state. The low carbon alcohol gasoline of the invention has good stability of storage, convenient use, full combustion and high kinetic property, compared with pure gasoline, M85 can substitute more than 85 percent of gasoline and save gasoline cost by 20 to 25 percent.

Description

Automobile-used height (in) high (middle) ratio low-carbon alcohol gasoline

Technical field

The invention belongs to oil engine alternative fuel class, relate to a kind of through the miscible automobile-used height of additive (in) high (middle) ratio low-carbon alcohol gasoline, promptly 15% (W) is to fused the forming of additive (comprising tensio-active agent, cosurfactant, Fatty Alcohol(C12-C14 and C12-C18), corrosion inhibition for metal inhibitor and lubricant) of the gasoline and 5% (W)-10% (W) of the low-carbon alcohol of 90% (W) (methyl alcohol, ethanol or both arbitrarily than mixture), 5% (W)-80% (W).

Background technology

Low-carbon alcohol is ideal vehicle alternative fuel, particularly methyl alcohol, its cheap (be about gasoline 1/2), aboundresources.According to investigations, about 1.6 tons of low grade coals can produce 1 ton of methyl alcohol, and China is producing coal, coal storage big country, and its reserves can be with 200 years (oil can only be used the middle of this century); Methyl alcohol belongs to oxygenated fuel, enter engine combustion after, pollution emission is little, is universally acknowledged clean fuel.

Present domestic gasoline of high proportion methanol is of a great variety, but its common defects is:

1. the low heat value of methyl alcohol has only 46% of gasoline, and air-fuel ratio has only 2.29% of gasoline, reach thermal equilibrium and air-fuel ratio balance, all need transform engine;

2. the vapour pressure of methyl alcohol is lower than gasoline, but with gasoline miscible after because its vapour pressure of azeotropism is higher than gasoline again, thus summer easy vapour lock, igniting in winter difficulty.The vaporization heat of methyl alcohol be gasoline 3-4 doubly, the methyl alcohol that sprays in the cylinder can cause cylinder temperature significantly to reduce, methyl alcohol is difficult to become steam, causes that burning is insufficient, power descends, oil consumption increases, economic benefit descends;

3. high-proportion methanol makes the alcohol hydrocarbon fuel viscosity degradation, causes component wear.Require gasoline of high proportion methanol viscosity to want high, avoid alcohol hydrocarbon fuel to flow at the bottom of the shell because of inside wall of cylinder surface temperature is low and lubricating oil forms diluted emulsified machine oil;

4. methyl alcohol and gasoline are dissolving each other in the scope at high proportion under the normal temperature.But methyl alcohol happiness water (moisture absorption) can layering when water-content in the pure hydrocarbon 〉=0.5%, also easily layering when envrionment temperature is lower than 0 ℃;

5. methyl alcohol has corrodibility to metallic substance such as copper, iron, aluminium, lead, non-metallic material such as the pipeline of fuel transfer system, sealing member, Equipment In Oil Service Station is had swelling action, even cause be full of cracks.These problems are used on the automobile very dangerous if do not solve.

Summary of the invention

The invention solves an above-mentioned ubiquitous difficult problem, provide a kind of automobile-used height (in) high (middle) ratio low-carbon alcohol gasoline, be characterized in:

1. engine structure need be do not changed, the GB gasoline of corresponding label can be directly substituted;

2. mutual solubility is good, even water content reaches 5%, and can layering at subzero 40 ℃ (40 ℃) yet;

3. the stand rate of economizing gasoline by GB preparation M85 methanol gasoline, carries out 93#, 97# gasoline and M85 stand contrast experiment respectively on the electronic injection gasoline engine that the new light-driven engine in Shenyang manufacturing company dispatched from the factory in 2006.The result is as follows: under equipower and equal operating mode, the alternative ratio of alcohol/gasoline is that 1.5 kilograms (methyl alcohol) substitute 1 kilogram of gasoline, can save gasoline expense 20% to 25%.Wherein the additive aboundresources is with low cost;

4. can promote gasoline quality, after dissolving each other with low-carbon alcohol in proportion as common 90#, 93# gasoline, can promote to being equivalent to 97#, 98# gasoline;

5. environment protecting is good, additive is made up of tensio-active agent, cosurfactant, Fatty Alcohol(C12-C14 and C12-C18), corrosion inhibition for metal inhibitor and lubricant, because the octane value of methyl alcohol is higher than gasoline, can not use carcinogenic methyl tertiary butyl ether blending agents (U.S., Europe, Japan successively stop using) in the home-produced fuel.Do not contain the objectionable constituent of damaging or making three-way catalytic converter poisoning (inefficacy) yet.Exhaust emissions, as carbon monoxide, hydrocarbon polymer, than using regular gasoline to descend for 50% (being up to 90%), unconventional discharging such as formaldehyde and formic acid etc. are suitable with pure gasoline, or are lower than pure gasoline slightly.

Embodiment

By the following examples feature of the present invention and other correlated characteristics are described in further detail, so that technician's of the same trade understanding.

That present embodiment relates to is M85 and M25 Vehicular methanol petrol embodiment:

The gasoline of the methyl alcohol, 10% (W) of example one 85% (W), 5% additive mix through the microemulsified machine and get final product.

The gasoline of the methyl alcohol, 65% (W) of example 2 25% (W), 10% additive mix through the microemulsified machine and to get final product.

Claims

An automobile-used height (in) high (middle) ratio low-carbon alcohol gasoline, form to the low-carbon alcohol of 90% (W) (methyl alcohol, ethanol or both arbitrarily than mixture) and 5% (W) to the gasoline of 80% (W) by 15% (W), it is characterized in that, contain the additive of 5% (W) to 10% (W) in the proportioning of this fuel, additive comprises tensio-active agent, cosurfactant, Fatty Alcohol(C12-C14 and C12-C18), corrosion inhibition for metal inhibitor and lubricant.
2. a kind of automobile-used middle high (middle) ratio low-carbon alcohol gasoline according to claim 1 is characterized in that low-carbon alcohol content is that 15% (W) is to 30% (W).
3. a kind of vehicle high-ratio low-carbon alcohol gasoline according to claim 1 is characterized in that, low-carbon alcohol content is that 70% (W) is to 90% (W).
4. according to claim 1 or 3 described a kind of high-proportion methanol gasoline for vehicle, it is characterized in that methanol content is 85% (W).