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The statutory NO x limit for diesel passenger cars Euro 5 is 180 mg NO x /km. The Porsche Panamera equipped with the VW-EA897 engine, made by Audi, exhibited an 8.3-fold limit violation with an average NO x emissions of 1,498 mg/km, according to DUH. According to DUH data, the measurements were made at outside temperatures between +10 and +14 °C.
These may improve fuel economy because the engine runs slightly lean as a consequence. However, running leaner than the manufacturer intended can cause overheating, piston damage, loss of maximum power and poor emissions (e.g., higher NOx due to higher combustion temperatures, or, if misfiring occurs, greater hydrocarbon emissions).
Because modern diesel engines often have a throttle, EGR can reduce the need for throttling, thereby eliminating this type of loss in the same way that it does for spark-ignited engines. In a naturally aspirated (i.e. nonturbocharged) engine, such a reduction in throttling also reduces the problem of engine oil being sucked past the piston ...
Diesel engines are typically well suited to turbocharging due to two factors: A "lean" air–fuel ratio, caused when the turbocharger supplies excess air into the engine, is not a problem for diesel engines, because the torque control is dependent on the mass of fuel that is injected into the combustion chamber (i.e. air-fuel ratio), rather than the quantity of the air-fuel mixture.
The German Federal Motor Transport Authority (KBA) approves Volkswagen fixes for 1.2, 1.6 and 2.0 diesel engines in Europe. [7] [8] 9 December 2015: Volkswagen revises previous estimates on CO 2 emissions irregularities, saying that only around 36,000 vehicles are affected. [9] 9 March 2016
EMD was required to monitor fuel delivery, exhaust gas recirculation, the diesel particulate filter (on diesel engines), and emissions-related powertrain control module inputs and outputs for circuit continuity, data rationality, and output functionality. EMD+ was used on model year 2010-2012 California and Federal petrol-engined vehicles with ...
There is no such thing as a quick fix or silver bullet to healthy eating and weight loss. If you are experiencing the symptoms GOLO claims to cure, like low energy, chronic stress or a ...
All SCV/SCAM vehicles are 4x4 with right- or left-hand drive, and are available with 3.5 tons and 5.5 tons chassis (chassis or crew cab). A 7.5 ton version was in development in the mid-2010s. Available models are based on the Iveco Daily Van, cabin cruiser, Combi, Minibus, Agile (with automatic gearbox), and CNG , most in all-wheel-drive .