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The tumultuous history of the diesel engine

Volkswagen, diesel's most enthusiastic patron, deceived everyone about the amount of emissions its cars were putting out. We have covered this latest massive automotive scandal in great detail, and there are surely more fascinating revelations to come. It turns out that this is just the latest episode in the epic story of the controversy and intrigue surrounding the diesel engine, and its inventor. This is the story of the tumultuous birth and interesting evolution of the compression-ignition engine at the center of the VW scandal. Napoleon III Got Rudolf Diesel Deported Rudolf Diesel was born in Paris in 1858. His Bavarian parents had settled in France where his father, Theodor, was a leather goods manufacturer. When the French Parliament declared war on Prussia, kicking off the Franco-Prussian war, the Diesels fled to London. When he was 12, Rudolf went to live with his aunt and uncle in the Bavarian university town of Augsburg. It was his parents' hometown, and importantly, it's where Rudolf began studying at the Royal County Trade School. His time in Augsburg, graduating at the top of his class from trade school that laid the groundwork for all that was to come. Diesel Nearly Blew Himself Up An early career in refrigeration saw Diesel running R&D in Berlin for Linde, a company started by refrigeration pioneer Carl Von Linde, one of Diesel's professors. His ambition to branch out beyond refrigeration, and his deep understanding of thermodynamics, led to efficiency experiments with steam engines. Diesel was trying to create an engine that didn't waste heat from the combustion process, therefore getting the most work out of the fuel. Instead, he was nearly killed when an experimental ammonia vapor steam engine exploded. Recovery took many months, and during some of that time, he was no doubt planning his next experimental engine, based on the theoretical Carnot cycle. His Engine Was An Attempt To Stick It To The Man Steam engines were expensive to run and wasteful. Diesel thought the efficiency of his design would be a way for the small business to compete with the dominant industrial giants. It was, and it did, but big business is equally passionate about chasing efficiency. Diesel engines quickly proliferated in industries both grand and cottage. Rudolf Didn't Really Invent The Diesel As We Know It Instead, he improved an existing one to a significant degree. The Diesel engine could be considered an evolution of the "hot-bulb" engine.

Toyota Prius gets higher clearance, better suspension in Pakistan

It's been 16 years since the Toyota Prius launched in Japan. Finally, the world's most popular hybrid is becoming the first hybrid car to show up in Pakistan. This version of the Prius has been customized by Indus Motor Company (IMC) in order to deal with, well, let's just say some challenging road conditions. IMC knows what it's doing, and has modified Toyota and Daihatsu vehicles for the Pakistani market for over 20 years. The Prius brings with it the iconic shape and Parvez Ghias, CEO of IMC, told The Technology Times that the car's arrival, "is indeed a great milestone, not only in the history of IMC, but, of the entire nation." Pakistan Today says that IMC is beefing up the ground clearance of the imported Priuses and adds a "robust suspension system." Why would this be important? Well, the US Department of State warns travelers to beware of crowded roads, aggressive and poorly trained drivers and bad roads that could include potholes and sharp drop-offs. Then there's the "donkeys, cattle, horse carts, and even the occasional camel [that] can pose roadside hazards in some areas." There's also the big problem of terrorism-related violence in Pakistan, but we haven't heard that the Pakistan Prius has been bullet- and shrapnel-proofed.

EPA says automakers ahead of schedule for 54.5 MPG by 2025

Remember, the target is 54.5 miles per gallon by 2025. Today, the CAFE level is a little over 30. How we get from here to there is something the US Environmental Protection Agency (EPA) is monitoring closely. Thus, the EPA just released an annual flash report on how the auto industry is progressing towards meeting the nation's fuel economy goals. Overall, the industry is doing almost 10 grams per mile (equivalent) better than the rules require. The good news is that the industry is a bit ahead of schedule. In the report (see page iii), the EPA breaks things down by automaker based only on MY12 numbers. Tesla is at the top of the list (which is ranked by over-compliance with 2012MY CO2 standards), but for our money, the real leader is Toyota. The Japanese automaker built the second-highest number of vehicles (2,020,248, after General Motors' 2,364,374) but racked up the most net 2012 over-compliance credits (13,163,009 metric tons). That's an average of over 6.5 metric tons per vehicle. The next closest is Honda, with just over five metric tons of credits per vehicle. Given the MPG fiasco with Hyundai and Kia, the EPA says, "we are excluding Hyundai and Kia data because of the ongoing investigation into their testing methods," but overall, the rest of the industry has credits worth 25,053,168 metric tons of CO2, which means it's doing almost 10 grams per mile (equivalent) better than the rules require. Go team. For now, the numbers in this report (and there are a lot more of them – get the 59-page PDF for yourself here), can't really be used to understand everything from the first year of the new CAFE program. The EPA writes, "Because the program allows credits and deficits to be carried into future years, at the close of the 2012 model year no manufacturer is considered to be out of compliance with the program. ... Compliance with the 2012 model year standards can't be fully assessed until the end of the 2015 model year." There are a more interesting tidbits in the report, such as the fact that Fisker produced 1,415 model year 2012 vehicles, Tesla made 2,952. Remember, too, that CAFE numbers don't equal the fuel economy you see in your daily drives. In the real world, the 54.5 CAFE level will be about 40 mpg, and the average fuel economy today is around 25 mpg, so we have a ways to go, no matter how you measure it. EPA Report: Data Show Automakers on Track in meeting Greenhouse Gas Standards WASHINGTON – Today, the U.S.