Vacuum operated valves are often tested by applying vacuum to see if the valve opens. If the valve does not open or if the vacuum cannot be held, the valve is considered bad. This works okay on a standard or on a negative back-pressure EGR valve. A positive back-pressure valve will no...
7 - EGR Valve 8 - Temperature Sensors (4) 9 - DPF Sensor Table 10 - UL2 Dosing Module 11 - Compact Mixer Sensor Table 12 - UL2 Supply Module 13 - NOx Sensor 14 - PM Sensor 15 - DEF Tank 16 - SCR Catalyst 17 - DPF 18 - DOC How does an aftertreatment system work? The ha...
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The key to exhaust heat recirculation is a device called an exhaust gas recirculation (EGR) valve. The EGR valve opens when it encounters back pressure from the car's exhaust and channels it back into the combustion chamber. You might wonder what good this does, since the air in the chambe...
By interpreting these live sensor data, you can address issues beforehand. This leads to better fuel efficiency and enhanced engine performance. It may even extend the life of components like thecatalytic converterandEGR valve. Plus, the live data feature is handy tool to find out the real caus...
The EGR valve opens and closes during the engine’s cycles. If the EGR valve is stuck open, exhaust gas cycles back into the chamber when they are not supposed to. The engine cannot combust on too much of the carbon dioxide in the exhaust gas, meaning there’s not enough oxygen for co...
They include the Ignition Circuit, Spark Plugs, Fuel Injectors, Engine Idling Air Control valve, and Exhaust Gas Re-circulation (EGR) valve. Thus, it extracts the best possible engine performance while keeping emissions as low as possible.
intake air is controlled by theintake valves. On the intake stroke, usually 10 ° to 20 ° BTDC (before top dead center), the intake valve opens to allow the cylinder to pull in air as the piston goes down. A few degrees ABDC (after bottom dead center), the intake valve closes, al...
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Exhaust ports EGR hose EGR valve (with DC motor) EGR cooler (water-cooled) Intake ports B Electronically-controlled common rail system Several injections deliver high power output with low fuel consumption, greatly decreased PM and NOx emissions, and lower combustion noise. Injectors Common rail ...