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  2. Exhaust gas recirculation - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_recirculation

    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).

  3. List of Wheeler Dealers episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_Wheeler_Dealers...

    Work Completed: New gearbox oil sump, gasket and filter, wiring loom sorted, braking system upgraded with brake servo and new master cylinder, new power steering mechanism; alternator moved to the opposite side of the engine to make room for the power steering pump, non-authentic "SS" badges replaced with original or blank units; "SS" badges on ...