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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).
EGR with the feedback system and exhaust sensors are necessary to lower the chances of engine to engine variation in performance. By contrast, when operating in MAF mode the computer can automatically adjust its fuel delivery based on the airflow data generated by the MAF, even if other engine hardware is changed.
Pumped air injection systems use a vane pump called the air pump, AIR pump, or colloquially "smog pump" turned by the engine via a belt or electric motor.The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system.
This engine has changed layout of the intake/exhaust, with more efficient EGR cooler, better DPF and combined fuel consumption 5.6 L/100 km (50 mpg ‑imp; 42 mpg ‑US), less than its predecessor. Engine was mounted in (in order of appearance): 2nd generation Mazda 6 Atenza since November 2007
A pay-for-delete letter is a written request sent to a creditor or collection agency asking them to remove a negative entry from your credit report in exchange for payment. The primary goal is to ...
Blow-by, as it is often called, is the result of combustion material from the combustion chamber "blowing" past the piston rings and into the crankcase. These blow-by gases, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge.
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