Found inside – Page 461Generally , gasoline production is maximized during the summer months and fuel oils are maximized in ... they do seem to have kept their bus fleet running . Advertisement. i guess we are talking about different temps, here warm weather is anyhing above 5C, ↳ In Car Entertainment, Communication & Sat Nav. “If you’re buying a diesel car from 2007 or later, it’s no dirtier than a gasoline-powered vehicle.”, “Today’s technologies for cold-start are very effective,” Ciatti said. Hiring rather than buying? “The effect is very noticeable.”. so it's denser when it goes into the cylinder. by marco_polo » Thu Jul 01, 2010 1:42 pm, Post Engine oil got up to 150 degrees. “But keep in mind, that truck’s likely hauling around 50 tons,” Ciatti said. Found inside – Page 39Discharge air temperature should not exceed 55°C since engine ... some charge air to the compressor inlet to improve acceleration when running up to speed. My 1er's flying recently, do derv's go better when it's hot? I was able to run full boost (the max my turbo could handle) even in 90+ degtee summertime weather. Found inside – Page 2919.1.1 The Function of Engine Cooling 9.1.1.1 Heat Balance and Heat Transport Depending on its size, principle of operation and combustion system, a diesel ... Most of what I’ve learned from my fellow boaters has been valuable, but every once in a while someone tries to pass off something that’s totally bogus. When the temperature goes above 200, start getting worried. What's the best small auto car with easy access for the driver? Do diesels perform better in hot weather? “Its price usually has to do with the local tax structure.”. The typical operating temperature range of a passenger car and light truck engine can reach high temperatures of up to 235 degrees Celsius under extreme operating conditions. Even though the temperature was in the 30's; the diesel started in a couple seconds at about 1/4 throttle. If you ever need a replacement engine of any sort for any car or truck, GotEngines.com has made a living out of outperforming the competition by adding non trivial value in all of our engines for sale. However, when the weather gets cold, glow plugs are vital. “That’s why gasoline has to be handled extremely carefully around any ignition source. To understand why we need to consider the advantages and disadvantages of doing this. Found inside – Page 104That means it does not react with either the fuel or air in the engine cylinder . ... Figure 5–20 shows a cutaway view of a C - EGR heat exchanger : this ... Operating a diesel engine during the cold winter months demands that all diesel fuel and electrical systems operate normally.Diesel mechanics will tell you that their business activity picks up considerably beginning sometime in October due to cooler temperatures. Found inside – Page 18The electricity generated by the traction motors is dissipated as heat in ... Many additional systems work to keep a diesel-electric locomotive running. - ifithelps. They add more air to the combustion chamber, and more air means more fuel can be added. Colinh, I would have thought that idea would apply more to petrol as this evaporates but diesel doesn't evaporate (just thinking of spilt diesel on the forecourt floor - always seems to stay there). Yet, when temperatures drop below freezing, diesel-powered vehicles suffer the same fate as their gasoline-powered counterparts: They’re simply harder to start. This problem is common to both petro diesel and biodiesel. Yet, when temperatures drop below freezing, diesel-powered vehicles suffer the same fate as their gasoline-powered counterparts: They’re simply harder to start. The standard 1.6 TDCi 90ps and 109ps both have spare untapped power/torque & economy, there is little difference in their overall economy in standard form. “Modern diesel engines start in cold weather with very little effort.”. As you may know, your engine uses air, as well as gas, in order to generate energy. Diesel fuel injection systems create a great deal of heat, and they rely on unobstructed fuel flow to keep the pump and injectors cool. by weasley » Thu Jul 01, 2010 12:49 pm, Post Marine diesels should run at 180 degrees Fahrenheit. Moderators: babybmwadmin, Producethis, marco_polo, Lambster, Rich196, Post 2 - Related to the first reason, Diesel is a compression ignited engine, so the heat comes from compression of air. Hot weather can increase your fuel economy, but the methods we use to make passengers comfortable—rolling down the windows and using the air conditioning (AC)—reduce fuel economy. Hot weather can increase your fuel economy, but the methods we use to make passengers comfortable—rolling down the windows and using the air conditioning (AC)—reduce fuel economy. “In fact, to some degree, some people who drive diesels find they perform better than gasoline engines.”. Engines "like to run hot" because a.) Must be the V Power in that case. I would have thought the impact from friction is negligible. This type of oil provides the same level of protection for vehicles year round. Below about 40 °F, certain hydrocarbons in diesel turn gelatinous. by dan1 » Thu Jul 01, 2010 10:06 pm, Post Found inside – Page xBio-degradable Alternative Fuel for Diesel Engines Gadepalli Ravi Kiran Sastry ... all oils at no- load 5.21 MME Heat release rate plot at full load 5.22. Most diesel vehicles have a heating element in or near the fuel bowl filter to assist the melting process. Warm air Found inside – Page 729Q. -255 miles , any faster , or does it carry more cars than a comparable ... A. Especially in summertime that applies to , when it is real hot weather and ... You may be all cool with warming up your gasoline engine, but what’s up with diesel engines is a matter of interest. If perplexed whether should you allow diesel engine to warm up before driving off or not, reading on, can come in handy. Should You Allow Diesel Engine To Warm Up Before Driving Off? IIRC from my first year thermodynamics, the efficiency of the engine is actually related to the temperature of the engine itself. - Pizza man, Diesel more economical the hotter it gets ? I think that the cause of better economy in many diesels during hot spells, is because most diesels use hot-wire ammeters to measure air volume or MAF sensors by their more usual name. Add one treatment of Diesel Winter Anti-Gel with every fill-up for consistent protection against low-temperature performance issues. Re: Do diesels perform better in hot weather? Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - M4 LCA's. Why? Collaborate with Our Centers, Institutes and Programs, U.S. Department of Energy Office of Science. Found inside – Page 69AUXILIARY DIESEL ENGINE . Follow the recommendations for operating in extreme heat , as described for the main Diesel engine in the preceding paragraph ... Diesel Tuning Boxes and Increased economy? The downside is that Diesel will not form vapors unless heat is added to it. Science! Use an Anti-Gel Fuel Additive. “But a diesel engine runs fuel-lean; you don’t have to keep the ratio perfect,” Ciatti said. Post by JezyG » Thu Jul 01, 2010 2:44 pm Diesel engines still suffer heatsoak the same as a petrol turbo but to a lesser extent and in hot weather the intercooler will not be able to reduce the intake temp by quite as much and effciency will drop and therfore performance only slightly though. To do this, change your oil regularly, and use a high quality oil additive, like CleanBoost® EMT™. "Free" power and never a problem with it. activation energy is required for the combustion process. Glow plugs and other remedies, however, effectively vaporize diesel to prepare it for combustion. The problem is that diesel jells at low temperatures. - DP, Diesel more economical the hotter it gets ? Diesel on the other hand has a much higher freeze point, and is prone to gelling in cold weather conditions. Diesel drivers everywhere are thankful that diesels have become easier to start in cold weather. Yes diesel is a lot more economical in hot weather compared with cold or cooler weather, less friction to overcome so less fuel is required, also the warmer fuel/air compressed mixture ignites easier so less fuel is injected into the cylinders to compensate. Found inside – Page 109Tufoil® technology works ... here's more proof ! that Tufoil® is better than ... a big improvement in low temperature starting for gas and diesel engines ... Given that it will only be that cold for very brief periods of time better you get what you need and want for the whole year and understand that a few extra steps will need to be taken during extreme cold. Do I buy petrol or diesel? Tags: Engine news and tips, engines. - Rattle, Diesel more economical the hotter it gets ? A cooling fan locked on with the engine running at 1450 rpm can result in an 8% to 12% loss in fuel efficiency. Bearing in mind that a diesel engine is less economical in cold weather, does it mean that the hotter the weather gets the more economical the engine is ? Once I added a conservative water injection system (two nozzles, one pre intercooler and one in the throttle body elbow) it completely eliminated the spark knock in all rpm & load conditions. Dialing down the RPM’s may allow the engine to recover and run well at a more leisurely pace. Why do car reviewers always recommend a petrol car for city drivers and a diesel car for those who do high mileage/motorway driving? Found inside – Page 77... car's engine run better, smoother, cooler. 4. In Canada, government tests show a big improvement in low temperature starting for gas and diesel engines ... Hmmm. It levels out at 130 degrees and never gets any warmer (at idle). Mix Additives During Fueling: Note that these additives will only be effective when added above the Cold Filter … Though Chicagoland diesel prices are generally higher than gasoline, in most parts of the country, diesel fuel and gasoline are priced comparably. First off always allow your vehicle to start up and idle for a few minutes. Getting in and mashing the gas as soon as you start it is one of the worst things you can do to a cold engine. You must allow time for oil to reach all the nooks and crannies inside of your engine, the turbo is just one of the major parts this oil needs to reach. Diesel isn’t so volatile; if you tossed that match into a pool of diesel, it would go out.”. Argonne mechanical engineer Steve Ciatti takes a crack at some of the more persistent myths surrounding the technology of diesel engines. Find out more about the BMW 1 Series E81, E82, E87, E88. by JezyG » Thu Jul 01, 2010 10:42 am, Post Turbochargers don’t use extra energy; they run off thermodynamically “free” energy that would be lost as exhaust if not used. The difference between a 0W-30 and a 10W-30 is indicated by how well each flows at lower temperatures. Diesel engines, long confined to trucks and ships, are garnering more interest for their fuel efficiency and reduced carbon dioxide emissions relative to gasoline engines. They do this by adding a Diesel Particulate Filter (DPF), which removes visible smoke. That being said in extreme climates you will have to plug in any vehicle to have it work, the fuel is normally treated so it will work at those temps and … strange that some report lower mpg when i get higher! 20 Facts You Need To Know About Diesel Exhaust Fluid (DEF) The Environmental Protection Agency was created in the footsteps of the Clean Air Act of 1970. The Pre-Heating Time Span. When this happens in the winter, the fuel becomes gelatinous, and the truck will not start properly. certainly takes a LOT less time for my Mondy diesel to warm up in the morning once ambient temps are above 14 - 15 celsius. The following is the best advice I could compile on starting a diesel in cold weather. There are several reasons for that, and we've picked the most relevant ones below. Modern diesel engine technology makes starting a vehicle in cold weather much less of a challenge than it once was. Found inside – Page 1234However, in the middle of winter, heat has to be provided when the engine is not running so that the truck driver does not freeze when asleep in his bunk. heat is required for lubricants to do their job per design b.) by JezyG » Thu Jul 01, 2010 4:53 pm, Post I drive 8,000 miles per year, mostly around town. So, no, vehicle owners do not need to change their motor oil for hot or cold weather. Why is my car emitting white and blue smoke? I drive about 7,000 - 8,000 miles a year, much of it short journeys in town. Why are diesel cars only recommended for high mileage drivers? Again, this serves to increase the amount of work the turbo has to do, reducing the overall efficiency and performance of your vehicle’s engine. Diesel fuel injection systems create a great deal of heat, and they rely on unobstructed fuel flow to keep the pump and injectors cool. I'm buying a new car, do I go for petrol or diesel? This will cause a diesel to run rough until the crankcase reaches a suitable temperature. Found inside – Page 285... engines and steam generators are running when the fireman reports for duty , and all the fireman has to do is turn the steam heat “ stop valve ” when ... Found inside – Page 25Almost all modern diesels run faster than their counterparts of 20 years ago. ... Aftercooler Heat exchanger To cylinder intake valve Turbocharger Exhaust ... Found inside – Page 27I think if they were fast enough, Y0“ might get the same protection but that's something ... Engine heat rate in BTU/BHP-HR is a readily known parameter. 7 Easy Tips for starting a diesel in the cold 1. A large diesel engine usually cannot get above 2,000 RPM, but has huge torque because of the long stroke. Science! Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. by -J- » Thu Jul 01, 2010 8:32 pm, Post “Diesel fuel is not more expensive to produce than gasoline,” Ciatti explained. Let idle. This means that a race car engine can run much faster -- up to 15,000 RPM in a Champ Car engine -- but has relatively little torque. A typical diesel engine requires between 15 and 30 horsepower to run. Customers tend to notice drops in performance on hot summer days when comparing it to cooler spring and autumn nights. Found inside – Page 107The heat generated by compression in the cylinder ignites Illk' charge with absolute precision and reliability. How do you start a Cummins Diesel? The torque is what lets your engine pull a huge load up a hill. “Diesel car performance is far better than the perceived horsepower rating, because you’re getting all that power at speeds where you actually drive the vehicle,” Ciatti said. If you take glow plugs off engine head, diesel engine won’t ever start due to lack of compression. Steps to combat warm weather performance drops. But dervs do also work better in warmer weather and are more effcient it just has an optimal temprature range is the best way to describe it. - Robert J. Diesel more economical the hotter it gets ? “Toss a match into a pool of gasoline, and the match will never even hit the surface of the liquid; it will ignite the layer of vapor above the pool,” Ciatti said. Drivers in Milton Keynes are the worst for abusing Blue Badge parking, with 5962 fines issued in just 12 months. by heifez » Thu Jul 01, 2010 1:15 pm, Post In hot summer weather or cold winter climate, synthetic oil is a multi-purpose oil for your vehicle. Once again, hot summers and cool diesels are not possible if the oiling system in your engine is having some frictional issues. I thought the mass of warm air was a lot lower than cold air? Below about 40°F, certain hydrocarbons in diesel turn gelatinous. - Andrew-T, Diesel more economical the hotter it gets ? Complete to keep your injection system clean and your fuel from gelling. I always thought it was the different blends of diesel in winter and summer that accounted for the difference. Should I buy a diesel? by Onehp » Thu Jul 01, 2010 12:35 pm, Post Below about 40 °F, certain hydrocarbons in diesel turn gelatinous. There may be a marginal advantage I suppose, but as the fuel is kept in underground tanks I would have thought its temperature is pretty constant. - diddy1234, Diesel more economical the hotter it gets ? Found inside – Page 126Another consideration is the pickup in the lines that run from the fuel ... are in a hot climate , it is important make sure any change in hose routing does ... Diesel is made up of hydrocarbons that can solidify when the temperature drops to 40 degrees below Fahrenheit. 2. Stanadyne Diesel Performance Formula’s additive is designed to help your engine run better. Multiviscosity oils solved this problem by providing a better flowing oil that remained thin when the weather turned cold while also thickening as the temperature rose. After letting truck warm up to 85 degrees, drove it for 15-20 minutes. “We all have this image of trucks belching out dirty black smoke,” Ciatti said. There's a scientific explanation for why you use less fuel in warmer weather, and it's to do with air temperature. With low annual milage, should I buy a diesel car? During those very hot summer days, we see a significant increase in the amount of time the engine cooling fan is on. Diesel engines have turbochargers, which are pumps driven by exhaust gas. If one gets more mileage from a diesel, isn't that vehicle a better... Should I buy a diesel SUV? Treating Diesel Fuel in Winter. Extreme cold, however, is the enemy of all motor vehicles and requires vehicle owners to take extra precautions. If you can’t shelter your vehicle when the temperature falls below zero, use a battery warmer, an oil warmer or a block heater to keep the engine warm. Found inside – Page 9-8Diesel engines provide better fuel efficiency than gasoline engines, run cooler during hot weather, require no regular tuneups, and generally have greater ... - David Horn, Diesel more economical the hotter it gets ? Because diesel engines are still most common in trucks, many people assume that diesel-powered cars would behave like a truck behaves: slow and sluggish. Yes and no, too hot and the engine suffers heat soak which reduces effciency and warmer air is less dense so you get less power out of it. “DPFs are very effective,” Ciatti said. “Since an engine depends on aerosolizing fuel, you don’t want goopy fuel,” Ciatti explained. Often this is remedied with glow plugs, which are heated by the battery and help warm up the fuel so it can vaporize. What matters here is that cold air is denser than hot air. My particular area of expertise is engines, so I’m pretty sensitive about … What matters here is that cold air is denser than hot air. I've put a few tanks through her now, maybe her injectors have cleaned up a bit. The problem is that diesel jells at low temperatures. The turbo will effectively 'balance' the difference by working more or less to compensate. The reason is that diesel engines use these heaters to help them start. Often this is remedied with glow plugs, which are heated by the battery and help warm up the fuel so it can vaporize. Most trucks will run the glow plugs for about 10-20 seconds before cranking, and for about 2-3 minutes after startup as well. Fine, but at bottom a fixed mass of car will need a certain amount of energy input to complete a given journey, which will come from burning a certain mass of hydrocarbon and a proportional amount of air. Found inside – Page 25Teflon tape should not be used on a. steam lines b. hot water lines c. boiler ... Motor runs hot, temperature rapidly rising a. use a fan to cool motor b. Found inside – Page 33If scale is present in the fresh water side of the heat exchanger, the diesels will probably not run at full speed in hot weather without overheating and ... - colinh, Diesel more economical the hotter it gets ? Found insideRemove the cap on the heat exchanger to create an air intake. ♢ Screw the drain plug in or ... Run the engine for at least 15 minutes then drain again. If you only disconnect glow plugs, you will see longer cranking than usual, but it will start, relatively easier in hot weather than cold. Written by: E. Long Discuss this article in this forum thread Last updated January 8, 2005 Winter's here, now what? “ Today’s technologies for cold-start are very effective,” Ciatti said. Yes diesel is a lot more economical in hot weather compared with cold or cooler weather, less friction to overcome so less fuel is required, also the warmer fuel/air compressed mixture ignites easier so less fuel is injected into the cylinders to compensate. Diesels and extremely cold weather. I have always found the MPG better in the summer in my astra diesel and do about 2-2.5k a month. “They remove 95-plus percent of the mass of smoke.”, The smoke, trapped in a ceramic matrix, accumulates until the car’s computer determines it’s time to clean it out in a process called a “regeneration cycle.”. Found inside – Page 95In any weather, throughout their entire performance range, engines with Tusoil run easier. On a hot Summer day, particularly after a turnpike run, ...