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Topics to be Discussed. Makeup and terminology of vehicle fuelsGasoline propertiesTypes of alcoholsConcerns about alcohol enhanced fuelsSynthetic fuels and blendsHow to test fuel for RVP and AlcoholC.A.F.E. rating and E85Service related issues. The Need for Alternative Fuels. Peak Oil- the world's production of oil is close to its peakReduce imported oil-now 70%Global warming concerns and the need to reduce C02 emissions which is currently about one pound per mile for every vehicle19
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1. Gasoline and Alternative FuelsICAIAJim HaldermanDayton, Ohio
3. The Need for Alternative Fuels Peak Oil- the world’s production of oil is close to its peak
Reduce imported oil-now 70%
Global warming concerns and the need to reduce C02 emissions which is currently about one pound per mile for every vehicle
4. Imported Oil VS. Consumption
5. Will Gasoline Cost Increase ?
6. Types of Alternative Fuels The U.S Department of Energy (http://www.eere.energy.gov/afdc/)
recognizes eight types of alternative fuels:
Ethanol
Natural gas
Propane
Hydrogen
Biodiesel
Electricity
Methanol
P-series fuels
7. Gasoline Gasoline consists of up to 500 hydrocarbons with between 3 and 12 carbon atoms per molecule
Huh?
8. Fuel Related Terms Methane-one carbon atom; four hydrogen atoms (CH4)
Natural gas is mostly methane
9. Natural Gas=Mostly Methane
10. What does NMHC Mean? NMHC means “non-methane hydrocarbons”
Cows produce methane gas (two places)
If emission level standards included methane, then areas with cows may fail
Decay of organic waste in municipal solid waste landfills
NMHC measures all hydrocarbons EXCEPT methane which is considered to be a potent greenhouse gas (23 times that of CO2)
(Does not affect the ozone layer because it does react with NOx)
11. Ethane (C2H6)
12. What’s this to do about Alcohol? If one of the “Hs” is replaced with an hydroxyl
group (-OH) (adding an atom of oxygen to the molecule) this changes methane into methanol and ethane into ethanol (delete the “e” and add “ol” at the end
Adding the oxygen atom to the molecule is all it takes to create an alcohol
The oxygen in the fuel itself is called an “oxygenated” fuel
13. The Oxygen will not Escape Oxygenated fuel is not like soft drinks where the CO2 can bubble out
Carbonated water, also known as soda water, sparkling water, fizzy water, club soda, or seltzer water, is plain water into which carbon dioxide gas has been dissolved
14. Shelf Life “Shelf life” means that length of time a product can be stored (on a shelf) and still have “like new” performance
Oxygenated fuel, like any fuel, has a shelf life of about 90 days according to industry experts
15. Other Hydrocarbons Hydrocarbons come in many different forms
The number of carbons determines its name
Replace the four hydrogen atoms from methane and replace with two chlorines and two fluorines
The result: dichlorodifluoromethane (R-12)
16. Glycols The same with glycols
Add another OH to the ethanol and you get ethylene glycol (antifreeze)
This is why antifreeze can burn
Antifreeze can be ignited and will burn
17. Methanol (CH3OH) The “bad” alcohol
Made from natural gas or wood
Called wood alcohol
Very corrosive
Must be used with another alcohol called a co-solvent if used in an engine
Also called methyl alcohol or methyl hydrate
18. MethanolContains 50% oxygen by weight and is very corrosive
19. M85 Flex Fuel Vehicles M85 flex-fuel vehicles are a gasoline vehicle that can use M85
It takes 1.7 gallons of M85 to get the same driving range as one gallon of gasoline, but price of a gallon of gasoline is about 1.7 times the price of a gallon of M85, so it balances out
20. Ethanol (C2H5OH) The “good” alcohol
Is not as corrosive as methanol
Made from corn or bio-mass (called bioethanol)
Called “grain alcohol”
Also called ethyl alcohol
Used as an additive to gasoline
Used to be called “gasohol”
21. Propane (C3H8)
22. Isopropanol (C3H8O) Isopropanol is sometimes sold as "Isopropyl Rubbing Alcohol, 70% (or 90%)"
Isopropyl alcohol is also commonly used as a cleaner and solvent in industry
23. Isopropyl Alcohol Isopropanol is a major ingredient in "dry-gas" fuel additive
Once soluble, the water does not pose the same risk as insoluble water as it will no longer accumulate in the supply lines and freeze
24. Butane (C4H10)
25. Butanol Can be used as a fuel to replace gasoline
Not currently in production
First plant designed to produce automotive fuel is in England
Can be used 85% with gasoline(15%) without any changes
Almost the same BTU output
26. Pentane (C5H12)
27. Hexane (C6H14)
28. Heptane (C7H16)
29. Octane (C8H18)
30. ISO-OCTANE
31. Olefins (Causes Valve Deposits)
32. Naphthalene (Moth Balls)
33. Toluene (used as an octane improver)
34. Benzene (Cancer causing)(Some say that any chemical ending in “ene” can cause cancer)“Hi-Test” gas used to be called “benzene”
35. Gasoline is a blend of hydrocarbons The heavier molecules provide heat energy and therefore fuel economy
The lighter hydrocarbons are used to provide volatility to allow the engine to start in cold weather
Therefore gasoline is blended for each season.
36. Gasoline Production
37. Specific Gravity of Gasoline Gasoline has a specific gravity that ranges from 0.730 to 0.760
Water has a specify gravity of 1.000
Gasoline is less dense than water
Water will sink to the bottom of a gas tank
38. Alcohol Specific Gravity Methanol is 0.792
Ethanol is 0.815
E85 ranges from 0.700 to 0.770
Therefore it would be hard to detect if a customer were using E85 by testing the specific gravity.
39. Octane Rating Octane rating is a measure of the fuel’s ability to resist detonation (ping or spark knock)
Gasoline is most commonly rated based on the ANTIKNOCK INDEX (AKI), a measure of octane rating
40. Octane Ratings (Continued) The AKI of a motor fuel is the average of the:
Research Octane Number (RON)
Motor Octane Number (MON)
(R+M)/2
41. Octane Ratings (continued) The RON of a fuel is TYPICALLY 8 to 10 numbers higher than the MON.
For instance, an 87 octane gasoline typically has a MON of 82 and a RON of 92.
82 + 92 = 174 divided by 2= 87
42. R+M/2 Ratings Regular= 87
Mid-grade (Plus) = 89
Premium + 91+
43. High Altitude Ratings(Why Lower?) (Lower Air Density)
45. E85 Octane Rating
46. U.S. Gasoline Requirements
47. Distillation Curve Measures the percentage of fuel that has evaporated at various temperatures
More accurate method because it tracks evaporation at several temperatures instead of just one temperature
48. Distillation Curve
49. Driveability Index (DI)
To predict cold-start and warm-up driveability, a driveability index (DI) has been developed using the temperatures for the evaporated percentages of 10 percent (T10), 50 percent (T50) and 90 percent (T90):
DI = 1.5(T10) + 3.0(T50) + (T90)
The DI varies with gasoline grade and season; the normal range in the U.S. is 850°F to 1300°F
Lower values of DI generally result in better cold-start and warm-up performance, but once good driveability is achieved, there is no benefit to further lowering the DI.
50. Gasoline Standards
51. Country wide distribution
52. Fungible Fungible means “can be interchanged”
This means that gasoline that meets standards (like electricity) is shipped through pipelines to others
The additive packages are added at the distributors
In other words, the basic product is the same no matter where it is purchased
53. Ethanol Absorbs water
54. E85 can not go in pipelines E85 absorbs moisture and therefore can become contaminated if transported through a pipeline designed for gasoline
Therefore all ethanol and E85 has to be transported by tanker truck
This limits the area where E85 is near ethanol plants
55. Case Study Old Ford Turbo Coupe
Problem with poor running after cylinder head replacement
The vehicle had summer grade fuel and now it is winter
Can check for alcohol and comtamination
56. Checked Fuel for Contamination
57. Phase Separation
58. Tell Customers? Because alcohol absorbs water and it then separates at the bottom, it is best to warn customers that running with the tank below Ľ tank could cause driveability problems and possible P0300 DTCs
Lower fuel level = hotter temperature for the fuel pump also
59. Gasoline Test #1 A service technician can test gasoline for alcohol:
Check for alcohol content - should be less than 10% unless E85 is being used
E10 may test as being higher than 10% which can lead to driveability problems
60. Alcohol Content Test
61. What is E70? E85 may test as having less than 85% alcohol
Ethanol is “denatured” using about 3% gasoline so E85 could test as having only about 82% alcohol
In cold climates, the percentage drops to 70% to allow for easier starting in cold weather (October 1 until April 1)
62. Fuel Composition Tester A fuel composition tester (SPX Kent-Moore J 44175) is the tool recommended to use to test the alcohol content of gasoline.
63. Step One This battery-powered tester uses light-emitting diodes (LEDs), meter lead terminals and two small openings for the fuel sample
64. Step Two The first step is to verify the proper operation of the tester by measuring the air frequency by selecting AC hertz on the meter
The air frequency should be between 35 Hz and 48 Hz.
65. Step Three After verifying that the tester is capable of correctly reading the air frequency, gasoline is poured into the testing cell of the tool.
66. Step Four Record the AC frequency as shown on the meter and subtract 50 from the reading. (60.50-50.00 = 10.5)
This number (10.5) is the percentage of alcohol in the gasoline sample
67. Step Five Adding additional amounts of ethyl alcohol (ethanol) increases the frequency reading
68. Fuel Volatility vs. BTUs There seems to be a lot of confusion on this subject
Fuel Volatility simply is “How easily a liquid changes to a vapor”
The BTU measurement is the energy content of the fuel
69. Gasoline RVP Gasoline vapor pressure measured at exactly 100 degrees F
Called Reid Vapor Pressure (RVP)
Easily checked by the technician
Higher in the winter so the engine will start
Lower in the summer to avoid evaporative losses and prevents vapor lock
70. Gasoline Test #2 A service technician can test the RVP of the gasoline:
Warm water (or coffee) in coffee cup to 100 degrees F
Place cold sample of gasoline into tester and place into the warm water
Shake and observe pressure. Should not exceed 10.5 psi
71. Testing for RVP
72. Reid Vapor Pressure (RVP) (vapor pressure measured at exactly 100 degrees F)
73. Top Tier Gasoline This standard was developed by GM, BMW, Honda and Toyota
Exceeds the standards set by the World Wide Fuel Charter (WWFC)
Chevron Texaco and Conoco Phillps gasoline meets these standards
http://www.toptiergas.com/
74. Ford Recommends BPMeets WWFC standards but not Top Tier
75. BTU is a BTU Regardless of the energy source, it still requires a certain amount of heat energy (BTUs) to propel a vehicle
One British Thermal Unit (BTU) is the amount of heat needed to raise one pound of water one degree F
76. BTUs in Gasoline and E85 1 U.S. Gallon of gasoline contains 114,132 BTU
E85 is then a blend of denatured ethanol and gasoline, therefore:
Denatured ethanol @ 77,815 BTU/gal x 85% = 66,143
Gasoline @114,132 BTU/gal x 15% = 17,120
77. E85 cost vs. Fuel Economy The cost of E85 is about 10% to 20% less than gasoline (E10)
The fuel economy is about 20% to 30% less
The payback is not there in most cases
It costs more to use E85
However drivers feel they are doing something for the country
78. E85 and C.A.F.E rating Corporate average fuel economy (C.A.F.E) is based on the amount of gasoline used
If a vehicle is able to operate on E85, the EPA assumes that it will be operating on E85 and therefore will rate the fuel economy based on the amount of gasoline (15%) it would use
This helps vehicle manufacturers meet the C.A.F.E standards
79. Fuel Economy using E85 A typical Chevrolet Tahoe with a 5.3 liter V-8
Gasoline EPA rating is 15 city; 20 highway
E85 EPA rating is 11 city; 15 highway
80. Flex Fueled Vehicles
Because the PERFECT air/fuel ratio known as STOICHIOMETRY for gasoline is 14.7 to 1
Whereas the STOICHIOMETRY of E85 is 9.765 to 1
81. Ethanol Carbon Cycle
82. World Wide Ethanol Production
83. Ethanol Production
84. Where to get E85?www.e85fuel.com
85. Grain Ethanol-Energy Balance The energy needed to produce ethanol is about 30% less than the amount of energy released when it is burned
This amount takes in the planting, transportation and other costs
Some say it is about 65% whereas others say close to 100%
About 300 gallons of ethanol per acre of corn
86. How Ethanol is Made from Corn
87. Cellulose Ethanol Uses non-food portion of renewable feed stocks (plant fiber) such as corn stalks and other bio-mass to create ethanol
Switch grass yields about 1,000 gallons of ethanol per acre
More energy efficient than using corn
Does not raise the price of the corn
88. Cellulose Ethanol
89. How Bioethanol is Made from Biomass
90. Imported Ethanol Chevron imports about 30% of the ethanol used to make their E85
The ethanol is being imported from Brazil
In Brazil, ethanol is made from sugar cane and is a low cost to produce
91. Environmentalists Love Ethanol(Reduces greenhouse gases and is renewable)
92. PLUS sides of Ethanol Fuel Increases Octane rating by 2.5 to 3.0 numbers.
Increases Volatility slightly
Ethanol Fuel cleans the entire fuel system ( This will also make my Downside list )
Will run in all vehicles without any engine modifications ( at 10% and under )
Lowers our dependency on foreign crude oil
93. CO2 Emissions The major greenhouse gas emitted from vehicles is carbon dioxide(CO2)
The average vehicle emits one pound of CO2 per mile of travel (based on 20 miles per gallon fuel economy or 20 pounds for every gallon of gasoline burned)
94. CO2 and Fuel Economy CO2 is related directly to fuel economy
Some States such as California are trying to regulate CO2 emissions and therefore fuel economy
The Supreme Court ruled that the EPA can regulate CO2
95. European CO2 Limits The European Union target is a limit of 130 grams per kilometer by 2012
The Toyota Prius emits 104 grams per km
If higher than 225 g/km then there will be fine of from about $400 to $4,000 per year
96. EPA Regulates CO2 "It is a pretty historic effort to set the first regulatory program for greenhouse gas emissions under the Clean Air Act," Margo Oge, director of the EPA's Office of Transportation and Air Quality.
97. Downside of Ethanol Fuel
Has lower BTU’s (approx. 3.1% at 10% ethanol) than gasoline
Water Tolerance changes
Swelling of elastomer (rubber & plastic) components, can breakdown some poly sealers
98. What cost Ethanol? According to Greenwire.com:
“Mexican farmers are abandoning the blue agave plant which is distilled to make tequila to plant fields of corn. The switch could create a tequila shortage.”
“Germany faces a similar situation as bio-fuel demand is pushing farmers to stop barley manufacture in favor of bio-fuel grains like rapeseed and corn”
99. Cost of Ethanol? In Ohio, horse farms are finding a shortage of hay because farmers can make more $$$$ growing corn
The price of corn is increasing
This means that many foods will also increase because corn is used for feed for cattle
100. How to Identify a Flex Fuel Vehicle Look at the emblem on the vehicle
101. VECI Sticker
102. Convert to E85? The Environmental Protection Agency (EPA) has a long-standing prohibition on converting the engine of a standard gas-burning vehicle into one that runs on E85 or other alternative fuels
See www.change2E85.com for information
Kits run from $369.99 to $499.99
Involves a jumper harness to the injectors
103. E10 is now the norm As of April 2, 2006 at least 85% of all the gasoline sold in United States has to contain 10% by volume of ethanol
Known as E10
104. E10 Ethanol Fuel E10 is gasoline enriched with up to 10 percent ethanol
All vehicle manufacturers have approved E10 for use in all makes and models
It is the most common ethanol-enriched fuel available
105. E85 Ethanol Fuel E85 is made for flexible fuel vehicles (FFVs), which are designed to run on any blend of ethanol and unleaded gasoline
In the United States alone, nearly 3.5 million of these vehicles can run on E85 right now
106. Classes of E85 Class 1- Pure E85; about 80% to 84% ethanol (Gasoline is used to denature the ethanol)
Class 2- Sometimes called E75; about 75% to 79% ethanol.
Class 3- Called E70; 70% to 74% ethanol
E70 and E75 are used in Spring and Fall to improve cold starting
107. E85 in Flex Fuel Vehicles Only
108. E85 Fuel System
E85 ethanol is more corrosive than gasoline, so any fuel system components must be constructed with materials that withstand corrosion
Bare magnesium, aluminum or rubber parts cannot be in contact with the alcohol in E85 ethanol fuel
109. E85 Fuel System #2 Ethanol easily absorbs moisture from its surroundings
Ethanol can be oxidized into acetic acid, and peroxide which can cause deterioration of some fuel system materials and wear of the copper components in electric fuel pumps
In the refinery process, additives can be blended in E85 ethanol fuel to reduce the harmful effects of corrosion
110. E85 Fuel System #3 Although fuel rails on certain GM Flex Fuel engines in previous model years were made of plastic, stainless steel is now (2007+) the only material used for fuel rails on all engine applications
111. E85 Fuel System #4 The fuel injectors for use in engines running on E85 ethanol have a Diamond-Like Carbon (DLC) corrosion resistant finish
The O-rings for the fuel injectors in GM Flex Fuel engines are more resistant to alcohol
112. E85 Fuel System #5 The fuel pumps for E85 vehicles use an armature design with a graphite composition commutator that is more resistant to the corrosive action of alcohols
Many conventional pumps now use the new improved armature.
113. GM Virtual Flex Fuel Sensor
Starting in 2005, GM vehicles have used a Virtual Flex Fuel Sensor (VFFS) method to determine the ethanol content of fuel in the tank of a Flex Fuel vehicle
114. Reset LTFT Because the virtual fuel sensor uses the oxygen sensor to detect alcohol content, if the long term fuel trim is reset, the PCM will “assume” that either 100% gasoline or E10 is in the tank and make all future adjustments based on this
Be sure to ask the customer if E85 has been used
115. Propane
116. Make up of LPG (propane)
117. Propane Numbers 91,000 BTUs per gallon
104 octane
Can be used indoors because little CO is produced
Large storage tank required
Refueling is not convenient
118. Energy Density Comparisons
119. Propane Storage
120. Compressed Natural Gas (CNG)
121. CNG Numbers 130 Octane
122 Cubic feet of CNG equals one gallon of gasoline
10% to 20% reduction in power when using CNG compared to gasoline
122. CNG pressures Three standard pressures are commonly used in CNG systems:
1. P24…….2400 PSI
2. P30…….3000 PSI
3. P36……..3600 PSI
Filling the tank to the highest pressure possible results in more fuel and allows for a greater range
123. Honda CNG injectors
124. Where to get CNG?
125. Fill up at Home
126. Alternate Fuel Comparison Chart
127. Synthetic Fuel The Fischer-Tropsch method of creating liquid fuel from coal, natural gas and other fossil fuels was invented in Germany in the 1920s.
The Fischer-Tropsch methods can be used to create liquid fuel from natural gas (gas-to liquid (GTL)) or create Fischer-Tropsch Diesel (FTD)
128. Synthetic Fuel
129. P-SERIES FUELS P-series alternative fuel is patented by Princeton University and is a non-petroleum-based fuel suitable for use in flexible fuel vehicles (FFV). P-series fuels are blends of the following:
Ethanol (ethyl alcohol)
Methyltetrahydrofuron, abbreviated MTHF
Natural gas liquids, such as pentanes
Butane
130. Ultra Low Sulfur Diesel (ULSD) ULSD is now the standard(15 ppm)
Allows the use of aftertreatment devices on 2007+ diesels
The old low sulfur diesel had 500 ppm sulfur.
131. Biodiesel Biodiesel is a domestically produced, renewable fuel that can be manufactured from vegetable oils, animal fats, or recycled restaurant greases. Biodiesel is safe, biodegradable, and reduces serious air pollutants such as particulates (PM), carbon monoxide, and hydrocarbons.
132. Biodiesel Biodiesel is defined as mono-alkyl esters of long-chain fatty acids derived from vegetable oils or animal fats which conform to ASTM D6751 specifications for use in diesel engines
Biodiesel refers to the pure fuel before blending with diesel fuel
133. How Biodiesel is Made
134. Biodiesel Made from renewable resources such as straight vegetable oil (SVO), animal fats or recycled restaurant greases
Designated BXX with the “XX” representing the percentage of biodiesel in the blend
Most vehicle manufacturers allow the use of B5 (5%)
Dodge allows B20 only if an additional fuel filter kit is installed
135. BioDiesel
136. Is this a Good Sign?
137. Electric Vehicles(Who killed them?)
138. Two Types of Chargers
139. Tri-Fuel Vehicle(Plug-in hybrid; gas; ethanol or CNG)
140. Hydrogen the Answer?(BMW dual-fuel 7-Series)
141. No Carbon with Hydrogen Using a hydrocarbon fuel, the first thing that is burned is the hydrogen and this leaves the carbon
No CO2 is created when hydrogen is burned
142. Hydrogen is not a fuel Hydrogen must be extracted to be used
Hydrogen is an energy carrier
It requires energy to extract and store hydrogen
Can be made from natural gas (methane)
Electrolysis (water into oxygen and hydrogen)
143. Hydrogen from Solar or Wind
144. Three challenges, one answer Hydrogen answers all three challenges. Hydrogen answers all three challenges.
145. Governor Schwarzenegger’s Vision
1 Hydrogen station every 20 milesGovernor Schwarzenegger’s Vision
1 Hydrogen station every 20 miles
146. 16 stations in operation.
15 more planned16 stations in operation.
15 more planned
147. Hydrogen Fuel Cell Vehicles
148. Proton Exchange Membrane (PEM) Fuel Cells
149. Why Fuel Cells for Vehicles?
150. Is Hydrogen Safe? Every fuel should be treated with respect; H2 is no different
Hydrogen has high buoyancy and dissipates easily in air, especially outdoors
Burning hydrogen rises; unlike gasoline, which spreads laterally
151. Hydrogen Refueling
152. Hydrogen is the Future Hydrogen fuel cells emit just water
Toyota fuel cell vehicle purges water from the system when it shuts down
This prevents the trapped water from freezing in cold weather
153. Driving the Future
154. Percentage in the Future?
155. Possible Recommendations(Twice a year) Techron (polyether amine) is a dispersant.
Gets between carbon particles and prevents them from clinging together.
Nothing actually dissolves carbon.
Recommended by GM, BMW and Chrysler
156. Recommendations (continued) Do not store any fuel longer than 90 days
Keep fuel tank above Ľ if possible
Do not overfill the tank or raw fuel will be drawn into the engine through the purge valve
Purchase fuel from a busy station
Use regular grade for most vehicles
157. Summary Do you think the price of fuel will increase in the future?
Gasoline is a complex mixture of hydrocarbons
Gasoline has many standards
Gasoline can be checked by a technician for RVP and alcohol content
Alternative fuels all have advantages and disadvantages
158. Contact and Resource Information
Jim Halderman (jim@jameshalderman.com
For a copy of this presentation go to http://storage.jameshalderman.com