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Crankcase Ventilation System on The Jeep CJ3B Page A hose runs from the vent to the intake manifold where the crankcase vapors are sucked into the engine and burned. Some kind of crankcase ventilation is necessary or pressure from the pistons going down on the intake or power stroke would eventually blow all the oil out of the engine. As the Jeep is driven forward a vacuum is formed and the air flow that this causes removes the blow-by gasses from the crankcase. www.film.queensu.ca /CJ3B/Tech/PCV.html   (812 words)

YOJOE.COM | Crankcase Crankcase was released as part of the fourth series (1985), packaged exclusively with the A.W.E. Striker (All Weather/Environment). In 1989, Crankcase was available mail-order from Hasbro Direct as part of a six figure vehicle drivers set that included Copperhead, HISS Driver, Stinger Driver, Frostbite, and Thunder. Crankcase's legs were later recolored and re-used to create Major Storm. www.yojoe.com /action/85/crankcase.shtml   (144 words)

Racor What's New Racor noted that pressure to close the crankcase is also coming from equipment users as well, especially truck operators, who are experiencing more leakage from crankcase draft tubes, caused, at least in part, by additional amounts of oil carryover from the new generation fuel systems in the on-highway market. In operation, crankcase emissions flowing out of the engine breather are directed into the inlet of the CCV System and through a patented crankcase pressure regulator that is integral to the head assembly. In operation, crankcase emissions flowing out of the engine breather are directed into the inlet of the CCV and through a patented crankcase pressure regulator that is integral to the head assembly, and has an integral bypass valve that minimizes variation in crankcase pressure. www.maesco.com /products/racor/r_extras/r_new/r_new.html   (1078 words)

Engine Crankcase   (Site not responding. Last check: 2007-11-06) The crankcase is the "body" that holds all of the other engine parts together. In this process, a mold of the crankcase is made (using sand or other materials), and hot, liquid aluminum is poured into the mold and allowed to cool into a solid, shaped piece. Looking at the figure in a little more detail, there are two main parts to the crankcase, a box-like structure to the right and a curved structure to the left as viewed from the front of the engine. www.lerc.nasa.gov /WWW/K-12/airplane/crankcase.html   (576 words)

NAPA Echlin - Training Programs   (Site not responding. Last check: 2007-11-06) The crankcase obtains fresh, clean air through a crankcase breather filter, which is inside the carburetor air cleaner housing. Because the entry point for the crankcase vapors is downstream from the throttle plate, a valve is necessary so that the air and vapors from the crankcase don’t pass through the carburetor venturi. Crankcase emissions must be metered carefully into the intake manifold to make certain the intake system doesn’t sense the recirculation of the crankcase vapors as a vacuum leak. www.napaechlin.com /cpc7c.htm   (1201 words)

Euro Spares - CRANKCASE CHECKVALVE ARTICLE A completely sealed crankcase would not cause much of this effect, but it would allow blow-by past the rings to raise the average pressure to the point where oil was pouring from every crevice. Where crankcase pressure apparently IS important is through its effect on the windage losses caused by all those cranks and rods whirling about, and this seems to be the reason that the F1 car world goes to such trouble with sealed crankcases and vacuum pumps. BSA attempted to improve the situation by relocating the device from the crankcase wall to the timing cover; this helped a bit but even with further modification the matter was still unsatisfactory, and the scheme was discarded in 1954 in favor of a rotary, timed breather which was already in use on the BSA twins. www.eurospares.com /sucker.htm   (5360 words)

The 2006-2011 World Outlook for Automotive Crankcase Additives It is for this definition of automotive crankcase additives that the aggregate latent demand estimates are derived. Based on the aggregate view of automotive crankcase additives as defined above, data were then collected for as many similar countries as possible for that same definition, at the same level of the value chain. Another way of looking at this is to say that latent demand for automotive crankcase additives is more likely to be similar across countries that have similar characteristics in terms of economic development (i.e., African countries will have similar latent demand structures controlling for the income variation across the pool of African countries). www.marketresearch.com /redirect.asp?productid=1110353&progid=3603   (2823 words)

ATSDR - ToxFAQs™: Used Mineral-based Crankcase Oil The chemicals found in used mineral-based crankcase oil vary depending on the brand and type of oil, whether gasoline or diesel fuel was used, the mechanical condition of the engine that the oil came from, and the amount of use between oil changes. Some metals in used mineral-based crankcase oil dissolve in water and move through the soil easily and may be found in surface water and groundwater. The health effects of used mineral-based crankcase oil vary depending on the brand and type of oil used and the characteristics of the engine it came from. www.atsdr.cdc.gov /tfacts102.html   (1056 words)

Air/Oil Separator Facts.htm   (Site not responding. Last check: 2007-11-06) The crankcase air/oil separator task, as the name implies, is to separate the air from the oil in the breather line. The air, a gas, flows up and out of the crankcase through the breather line, carrying the water vapor, which is also a gas, and the oil mist, which is a liquid in particles so tiny that they, too, are air borne. M-20 crankcase models use a 5-stage, ambient pressure process, which includes two oil collection stages, a tiny sump with a capacity of only a few drops of oil controlled by a weir, an air scrubber and a anti-siphon device. www.m-20turbos.com /separator_facts.htm   (1855 words)

Angry Kitchen Appliances: Information about crankcase ventilation in B205 and B235 The combination of bad crankcase ventilation, short driving distances, cold climate, long oil change intervals (20000km is way too long) and cheap oil is a disaster for the engine. The crankcase gasses are evacuated from the valve cover through hose A to a oil trap that condenses the oil mist and returns the oil to the oil pan. The connection for hose C at the valve cover is drilled to 3mm and the restriction in the connection for hose B at the oil trap is drilled from 4mm to 6.5mm. www.mitt-eget.com /saab/information_ccv_en.shtml   (1667 words)

1st AGS (Home of the Fuel Saver 5000) Crankcase Vaporiser, Gasoline Fuel Vaporizers Economizer Fuel Economy A turbo charge blower closing the crankcase to blower the fuel economy of your diesel engine with The Fuel Saver 5000 is guaranteed to make your engine run cleaner and more efficiently with reduced emissions and fuel economy operating costs. All crankcase to blower emissions vented through the draft tube are contained by The Fuel Saver 5000. When moisture is present in the crankcase, it reacts with sulfurous and nitrous oxides to form corrosive acids that wear down engine components, seals and oil. www.agsint.com /condsntr.htm   (991 words)

ATSDR - Public Health Statement: Used Mineral-based Crankcase Oil Used mineral-based crankcase oil may also enter the water or soil when it is disposed of improperly, for example, when it is poured into sewers or directly onto the ground. Used mineral-based crankcase oil is a source of hydrocarbons in storm runoff from bridges, rivers, streams, and deep as well as surface sediments. Studies of cattle that swallowed used mineral-based crankcase oil showed that lead and other metals in the oil are absorbed and distributed to various tissues, such as the liver and kidneys. www.atsdr.cdc.gov /toxprofiles/phs102.html   (2828 words)

RACOR : Articles : "Racor Expands Crankcase Ventilation Filter Line" Typically crankcase ventilation filter systems are found in marine and power generation applications, as well as any use with a closed engine compartment and the need to deal with crankcase emissions, including both on- and off-highway equipment. Oil mist is removed from the crankcase emissions and flows down to the sump area of the filter housing. In operation, crankcase emissions are directed into the inlet of the CCV and through the pressure/regulator by-pass valve. www.parker.com /racor/news_articles/expandfilterline.htm   (766 words)

AeroTwin Engine Features   (Site not responding. Last check: 2007-11-06) First, a reed valve is attached to the camshaft housings which are connected in turn to the crankcase. The engine has, in effect, a dry sump pump, crankcase pressure management and internal cooling for not only the crankcase and its contents; but also valve springs and associated parts from piston motion only. The drive ratio of the starting mechanism is structured so as to provide for 72 teeth on the ring gear, which when read by the crank angle sensor offers timing resolution equal to 5° or better, and can thus be used for both injection and ignition timing angle calibrations. www.aerotwinmotors.com /pages/at_features.htm   (528 words)

Animated Engines Two Stroke Cycle   (Site not responding. Last check: 2007-11-06) The fuel/air mixture is first drawn into the crankcase by the vacuum created during the upward stroke of the piston. During the downward stroke the poppet valve is forced closed by the increased crankcase pressure. The fuel mixture is then compressed in the crankcase during the remainder of the stroke. www.keveney.com /twostroke.html   (283 words)

Crankcase Distillation byproducts and the engine breather   (Site not responding. Last check: 2007-11-06) The burning of 40 gallons of fuel during a flight produces 40 gallons of water. In cold weather we can sometimes see this crankcase water as droplets on the oil dipstick or rocker box. Making sure your distillery is functioning properly by removing water from the engine crankcase is important if you want to prevent corrosion damage to your engine. www.sacskyranch.com /condense.htm   (505 words)

Crankcase Filter Modification   (Site not responding. Last check: 2007-11-06) Reason: I had already started playing around with a primitive ram air system and was about to do the air box mod which would remove the hose from the air box to the crankcase ventilation, so I needed something to put on the crankcase ventilation connection. This is the air box to the crankcase ventilation hose (what a long name for such a short hose), remove it from both the air box and the valve cover (the crankcase ventilation). Since the air box to crankcase ventilation hose is now removed oil fumes (yes, even with the filter some could get up into your air box) can not get into your intake (oil fumes decrease your fuel octane), so this will in effect increase your effective fuel octane level. www.karlsnet.com /mopar/crankcase.shtml   (585 words)

TRAXXAS_Support_How to_   (Site not responding. Last check: 2007-11-06) This is to prevent internal damage to the crankcase. Note: If the sleeve does not slide out of the crankcase with reasonable effort, slightly warm the crankcase with a hair dryer or heat gun to about 130 F. The sleeve should slide easily at this temperature. Now the crankcase is ready to be flushed clean and inspected. www.traxxas.com /support/howto/trx_trouble_25enginerebuild.htm   (1665 words)

Glen's Machine Shop - The Crankcase   (Site not responding. Last check: 2007-11-06) The crankcase is the largest and most complex part of the engine. After making the crankcase I began to make the front cover and discovered the problem of machining the clearance for the timing gear. So instead of making a new crankcase I made a seperate part to hold the crankshaft bearing and pressed it into the end of the crankcase. lodestone.dynodns.net /crcase.html   (382 words)

VWvortex Forums: VR6 crankcase breathers The aircooled guys are banned from running crankcase vaccum pumps right now as it was giving them too much of an advantage and the Honda guys were not doing it yet, except for Fred Ellis, Nate Romero and myself. If you run loose rings and high crankcase vaccum this allows more air in on the intake stroke as the cylinder pressure is now even lower then what it would be without vaccum behind the rings. I'm sure that using the exhaust side will be better as you dump all of the bad crankcase gases and 100% of the air on the intake side is fresh instead of the small percentage of crackcase vapor air--it'll still be heated, filtered or post-condensed "crappy" air to burn compared to fresh. forums.vwvortex.com /zerothread?cmd=print&id=772790   (6673 words)

Engine Crankcase   (Site not responding. Last check: 2007-11-06) This is a computer drawing of the crankcase of the Wright brothers' 1903 aircraft engine. This engine powered the first, heavier than air, self-propelled, maneuverable, piloted aircraft; the Wright 1903 Flyer, flown at Kitty Hawk, North Carolina, in December, 1903. To turn the propellers, the brothers designed and built a water-cooled, gasoline powered, four-stroke, four cylinder, internal combustion engine. www.lerc.nasa.gov /WWW/Wright/airplane/crankcase.html   (540 words)

ET-Performance & Racing Products - Understanding Evo breathers and oil return   (Site not responding. Last check: 2007-11-06) The breather valve opens to relieve high crankcase pressure during the piston down stroke as well as returning the air/oil mist from the crankcase into the low pressure area of the cam chest. The one-way valves are opened by positive pressure from the crankcase, allowing an air/oil mixture into the rocker box. Oil mist carried by the crankcase air is supposed to separate and return to the valve pockets through a small drain hole in the middle rocker box piece. www.et-performance.com /article.html   (1420 words)

Engine-SealsBeltsVent1 I built an adapter and measured the crankcase vacuum at idle. If there is positive pressure in the crankcase, the cap will dance or 'jiggle' on top of the valve cover as the pressure escapes. As the name implies, this three-port gizmo grabs oil and blowby gases from the crankcase, internally separates the liquid oil from the gases, then routes the oil back to the crankcase while the "purified gases" get routed upstream to the intake to be burned. www.volvoclub.org.uk /faq/EngineSealsBeltsVent.html   (17301 words)

Corral Forums - Photos of my crankcase evac system   (Site not responding. Last check: 2007-11-06) I'de be interested in seeing how the plumbing ties into the crankcase, and under what conditions the pump turns on, and where any oil residue is returned to in the stock aplication, and why it was even considered neccecary given the regular vaumne assisted ventilation. But when you accelerate hard, and or the closer to WOT you are the more its going to pull from the crankcase, contaminating the fuel air charge when you want power, AND potentially leading to detonation issues with the extremely low octain capability of the assorted oil vapor molecules mixing in the air/fuel charge. I would still be interested on some tech in exactly how the cobra crankcase evac pump is plumbed in stock Cobras, and under what conditions it operates. www.corral.net /forums/showthread.php?s=&threadid=356004   (2798 words)

K1100 Crankcase Vent Repair The crankcase vent tube attaches to a right-angle fitting on the top rear of the engine block, near the "bell housing" - you can see it by looking behind the coils on the left side of the bike. To sum it up, the crankcase vent tube transports crankcase gases, along with a bit of engine oil, to a small chamber inside the top section of the airbox. Finally, slide the crankcase vent line (with the clamp) over the fitting on top of the block and, again reaching between the sections of the airbox, tighten the clamp on the crankcase vent line. www.ibmwr.org /ktech/k11-crank-vent.shtml   (1372 words)

RACOR - Crankcase Ventiltation Filter Systems   (Site not responding. Last check: 2007-11-06) As engine manufacturers reduce exhaust emissions, crankcase blow-by vented to the atmosphere has become a larger contributor to the total emissions. Crankcase blow-by is produced when combustion gases, under high pressure, become contaminated with oil mist when blown past the piston rings into the crankcase. While the closed crankcase breather system offers the highest reduction in measurable emissions, the impact of unfiltered crankcase blow-by on engine components and performance must be considered. www.parker.com /racor/ccv_intro.html   (221 words)

Crankcase Disassembling and Reassembling Install main bearing inserts for Bearing 2 and 3- place the insert half which has the oil passage into the left crankcase half making sure that the passage in the insert lines up with the passage in the crankcase bearing seat; install the other insert halves in the right crankcase half. Apply a thin, uniform coat of gasket compound to crankcase mating surfaces, Make absolutely certain that no gasket compound enters oil galleries of crankshaft and camshaft bearings. Tighten remaining crankcase retaining bolts to 3 mkp (21. www.hillmanimages.com /912/manual23.html   (381 words)

Engine: Crankcase Ventilation   (Site not responding. Last check: 2007-11-06) Description: The crankcase ventilation system, often called positive crankcase ventilation (PCV), consists of a PCV valve or metered orifice (calibrated opening), its vacuum hose or line, a supply hose providing air into the crankcase, and on some applications, a breather filter to clean the air provided to the supply hose. Purpose: The purpose of the PCV valve is to regulate the flow of crankcase fumes into the intake manifold where they can be burned. Oil in the breather filter may be a clue to gasket leaks in the crankcase or the presence of excessive blowby gases in the crankcase. www.carcarecouncil.com /Engine/crankcase_vent.shtml   (400 words)

[No title] Possibilities are (1) that the crankcase pressure regulator is simply defective, or (2) that if not defective it is inadequate; that is, that minimum breather pathway (0.180" dia aperture) through the regulator--when seeing turbo-intake vacuum--is simply too large for boost levels that exceed the stock 1.8 bar design. Possibilities are (1) that the crankcase pressure regulator is > >simply defective, or (2) that if not defective it is > inadequate; that is, > >that minimum breather pathway (0.180" dia aperture) through the > >regulator--when seeing turbo-intake vacuum--is simply too > large for boost > >levels that exceed the stock 1.8 bar design. I suspected > > the crankcase > > > > breather as the source and thought it might be a > > defective pressure > > > > regulator valve. www.audifans.com /pipermail/200q20v/2000-November.txt   (18195 words)

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