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The goal of EGR is thus to reduce NO x production by reducing the combustion temperatures. In modern diesel engines, the EGR gas is usually cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas. However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR).
The second radiator is plumbed in series with the main radiator in the circuit. This was the case when the Audi 100 was first turbocharged creating the 200. These are not to be confused with intercoolers. Some engines have an oil cooler, a separate small radiator to cool the engine oil.
This engine is part of Audi's modular 90° V6/V8 engine family. It shares its bore and stroke, 90° V-angle, and 90mm cylinder spacing with the Audi V6. The earlier V6 engines (EA837) used an Eaton TVS Supercharger instead of turbocharger(s). In 2016, Audi and Porsche released a new turbocharged V6 engine they dubbed EA839.
Water Injection and cooled exhaust gas recirculation (EGR) could be seen as competitive technologies: it has been demonstrated that at medium load a 40-50 % Water-to-Fuel Ratio (WFR) with Port Water Injection (PWI) has the same effect as an EGR-rate of 10%, which is seen as relatively limited even for petrol engines. [15]
Here is a list of some notable BMW vehicle recalls in 2024. It's the end of the road for these cars: Models that won't make it to 2025. BMW recalls of 2024 Jan. 24: Recall for adhesive residue issue.
In the first attack, on Sept. 29, 2009, Muller allegedly broke into a woman’s home in Mountain View, tied her up, forced her drink a mix of medications and told her he was going to rape her ...
Model year 2016 Audi Quattro diesels were also found affected, including several 2016 Audi Quattro models (the 2016 Audi Quattro A6, A7, A8, A8L, and Q5). [362] Cynthis Giles, the EPA Assistant Administrator for Office of Enforcement and Compliance Assurance, called out the company for further refusing to take responsibility for its failure to ...
Kansas City Chiefs kicker Harrison Butker will be placed on injured reserve and miss at least the next four games with a knee injury. Butker underwent surgery to trim the meniscus in his left knee ...