Coolants Tom Birch Jim Halderman Tom Birch, 3/07 1Slide 2
Introductions: Tom Birch Retired educator from Yuba College, Marysville, CA. Writer of numerous car course readings Former officer in CAT and NACAT Board MemberSlide 3
Introductions: Jim Halderman Former level rate professional and educator and an entrepreneur. Writer of numerous car books and lives in Dayton, Ohio. http://jameshalderman.comSlide 4
Topics to be Discussed Purpose and capacity of motor coolants Principles and insights about water quality Types of coolants pH testing and significance Cooling framework testing and administration systemsSlide 5
What is Coolant? Added substances: About 3% Coolant is a blend of: 1. Water (half) 2. Solidify depressant (Usually ethylene glycol-around 93%) 3. Erosion inhibitors (additives) Ethylene Glycol: 47% Water: half Coolant 5 Need to knowSlide 6
Water is the chief fixing and: 1. Is inexpensive 2. Is an extremely effective warmth trade liquid 3. Has incredible warm conductivity 4. Has a decent particular warmth 5. Solidifies at 32Â°F (0Â°C) 6. Bubbles at 212Â°F (100Â°C) The water utilized as a part of coolant must be perfect & unadulterated. 6 Need to knowSlide 7
Good Water The American Society for Testing and Materials (ASTM) benchmarks for water quality include: Chloride <40 ppm Sulfate <100 ppm Calcium <100 ppm Magnesium <100 ppm Total Hardness <170 ppm pH Range: 5.5â9.0 Iron <1 ppm 7 Nice to knowSlide 8
Good Quality Water Good quality water sorts include: Deionized Distilled Demineralized Purified 8 Need to knowSlide 9
City Tap Water Usually obscure quality Can have undesirable chlorides, minerals, or salts Unknown pH Need to knowSlide 10
What to do? Test the water at the shop and in the event that it has high mineral substance, consider: 1. Obtaining refined or de- mineralized water 2. Introducing a small scale filtration framework 3. Introducing a converse osmosis framework Need to knowSlide 11
Burst Pressure Water extends when it stops, and this makes the burst weight that can break cooling framework parts. Radiator fluids (solidify depressants) bring down the stop temperature. 11 Nice to knowSlide 12
Pure Water 50/50 Anti-Freeze/Water 70/30 Anti-Freeze/Water Freezing Point 0â° C (32â° F) - 37â° C (- 35â° F) - 55â° C (- 67â° F) Boiling Point 100â° C (212â° F) 106â° C (223â° F) 113â° C (235â° F) Freeze & Boil 12 Need to knowSlide 13
Ethylene Glycol Ethylene glycol is the base liquid catalyst utilized as a part of each OEM production line fill. The added substance bundle will shift. Need to knowSlide 14
Propylene Glycol Only sold to the post-retail Not suggested for utilization by vehicle makers More extravagant than EG, Increased expense is $/gallon Still harmful however is not as sweet as EG Need to knowSlide 15
Poison 15 Need to knowSlide 16
MSDS 16 Need to knowSlide 17
Embittered Coolant Embittered = tastes terrible Embittering operators is obliged (denatonium benzoate, 30 ppm) Required in California and Oregon since 2004 yet excluded on the mark. Need to knowSlide 18
Additives The significant added substances: 1. decrease consumption 2. support pH 3. include shading (color) 18 Need to knowSlide 19
Color The shading assists us with distinguishing a coolant hole. It likewise assists us with distinguishing the added substance bundle. Should not be utilized as a marker what to utilize some Chrysler vehicles utilized HOAT coolant that was green 19 Need to knowSlide 20
IAT Inorganic Additive Technology (IAT) is the customary green coolant utilized as a part of most more seasoned vehicles. This arrangement offers quick acting consumption assurance, however the added substances are immediately devoured, uncovering the cooling framework to conceivable erosion issues if not changed routinely. Need to know 20Slide 21
IAT radiator fluid can contain: Silicates (conceivable grating dropouts) Phosphates Borates IAT (Usually Green in Color) IAT is viewed as old and can bring about ahead of schedule disappointment of earthenware phenolic seals utilized as a part of fresher water pumps. 21 Need to knowSlide 22
OAT (Usually Orange) Organic Acid Technology (OAT) is the recipe found in DEX-COOLÂ®, and is normally the liquid catalyst/coolant of decision for GM, VW, and numerous Japanese/Asian vehicles. This equation is built to offer long-life erosion security. The drawback of OAT is it is not good with different sorts of coolant (IAT and HOAT). Truth be told, Ford, Chrysler and others say to not utilize this sort of coolant in their more up to date models. 22 Need to knowSlide 23
OAT-proceeded with NAPS =nitrates, amines, phosphate and silicate free Nice to knowSlide 24
OAT=DEX-COOL is one brand Nice to knowSlide 25
DEX-COOL Concerns Root source is by all accounts air entering framework past the top and spilling admission manifolds Replace top and check top seats if radiator contains Air reasons rust of cast iron and arrangement of â Brown Gunkâ Rust then causes blockages Need to knowSlide 26
Rust in Engine Need to knowSlide 27
GM DEX-COOL Problems Class activity suit; GM may need to pay for admission gaskets on V-6s (V-8s as yet being resolved) Brown Gunk on radiator top Need to knowSlide 28
DEX-COOLâs Unique Formulation DEX-COOL uses Ethylhexanoic Acid (2-EH) as a destructive inhibitor 2-EH is inclined to harm plastics like Nylon 6.6 utilized as a part of admission complex gaskets and radiators G30 OAT and Peak Global OAT don\'t utilize 2-EH Nice to knowSlide 29
HOAT (Many hues) Hybrid Organic Acid Technology (HOAT) is found in more up to date Ford, Chrysler and Mercedes vehicles. Said to utilize the absolute best parts of both IAT and OAT, HOAT is an extremely defensive, long-life coolant. 29 Need to knowSlide 30
HOAT=Red; Pink; Yellow or Blue Nice to knowSlide 31
âGâ Designations G = Glysantin âtrade name of BASF. Valvoline (Zerex) in the US. G30 and G34 = non-silicate and phosphate free G05 = not quite the same as Texacoâs DEX-COOL, G05 item contains from 252 to 308 PPM Silicon which Valvoline accepts gives a superior aluminum security Nice to knowSlide 32
âGâ Designations-proceeded with G11 =Blue VW utilized before 1997 G12 =Pink/Red VW 1997+ G12 =Purple VW 2003+ HOAT definition; phosphate free ?Slide 33
âGâ Designations-proceeded with G48 =Low Silicate and Phosphate free Blue Color NAP =nitrates, amines, phosphate free BMW ?Slide 34
Replacement Antifreeze The best decision is to take after the vehicle manufacturerâs proposals . On the other hand, you can take after the proposals of solid radiator fluid producers (next slide). Need to knowSlide 35
Antifreeze Applications nSlide 36
Substance pH Hydrochloric acid -1.0 Battery corrosive 0.5 Lemon juice 2.4 Cola 2.5 Vinegar 2.9 Orange or Apple juice 3.5 Acid Rain <5.0 Tea or sound skin 5.5 Milk 6.5 Pure water 7.0 Healthy human salivation 6.5 â 7.4 Blood 7.34 â 7.45 Sea water 7.7 â 8.3 Hand cleanser 9.0 â 10.0 Household ammonia 11.5 Bleach 12.5 Household lye 13.5 Caustic Soda 13.9 pH Acid pH is a measure of corrosiveness or alkalinity of an answer. Under 7 is viewed as acidic. More noteworthy than 7 is viewed as soluble. Antacid 36 Nice to knowSlide 37
pH Effects Fresh liquid catalyst ought to have a pH somewhere around 9 and 11, utilized somewhere around 7.5 and 10. Radiator fluid has a tendency to wind up more acidic after some time. Too much acidic or antacid coolant will bring about erosion of cooling framework parts through galvanic activity. It can likewise build electrolysis; the different metals in contact with an electrolyte can create a straightforward battery. 37 Need to knowSlide 38
pH of different coolants IAT = 9.0-10.5 new OAT = 7.5-8.5 new (G30 and G34 assignment) HOAT = 7.5-8.5 new (G05,G48,G11 or G12 assignment) Need to knowSlide 39
Desired pH Need to knowSlide 40
Conventional Antifreeze Compounds 40 Nice to knowSlide 41
Extended Life Antifreeze Compounds 41 Nice to knowSlide 42
Coolant Summary Ethylene glycol - Most ethylene glycol coolant is any shading and contains around 93% ethylene glycol in addition to water and added substances. Propylene glycol - less hurtful to pets and creatures on the grounds that it is not sweet tasting, in spite of the fact that it is still destructive if gulped. Natural corrosive innovation ( OAT ) liquid catalyst coolant â This sort is ethylene glycol based however it doesn\'t contain silicates or phosphates. It is typically orange. DEXCOOL is an OAT coolant. Half and half natural corrosive innovation ( HOAT ) â This orange, green, red, blue or yellow coolant is an ethylene glycol based coolant like the OAT-sort liquid catalyst as it uses added substances (a low measure of silicate) VW/Audi pink - Most of these coolants are HOAT (ethylene glycol-based with some silicate and contain a natural corrosive) and are without phosphate. Asian red â This coolant is ethylene glycol-based and is sans silicate, yet contains phosphate. Mercedes and Ford yellow â This routine ethylene glycol coolant has low measures of silicate and no phosphates. Mercedes Lifetime â Very lavish, can be depleted, sifted and reused. Korean or European blue â This traditional ethylene glycol coolant has low measures of silicate and no phosphates. Decent to knowSlide 43
Coolant Related Problems 43 Need to knowSlide 44
Corroded Water Pump One of the explanations behind the expulsion of silicates from coolant Need to knowSlide 45
Corroded pump can bring about: diminished coolant stream and an overheating condition Need to knowSlide 46
Cavitation is the sudden arrangement and breakdown of low-weight bubbles. With fuel motors, the weight drop can happen at the water\'s channel pump. These air pockets deliver a strong\'s setting metal . 46 Need to know .:tslides
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