What is an EGR pipe?
What is an EGR pipe?
The exhaust gas recirculation tube is an emissions component that is found on many road going cars and trucks. The EGR tube is the passage through which the vehicle’s exhaust gases travel from the exhaust back into the intake.
What is EGR rate?
EGR Rate. The amount of recirculated exhaust gas is usually expressed relative to the total (diluted) charge air flow rate and referred to as EGR rate. The EGR rate can be defined on a volumetric or mass basis—both definitions are commonly used.
When did the venturi flow meter get removed from EGR?
Some versions also used pressure taps upstream and downstream of the EGR control valve to monitor the pressure differential across the valve for EGR rate feedback instead of a venturi-type flow meter. By 2008, the venturi flow meter was removed entirely.
Where is the EGR control valve on a diesel engine?
An EGR control valve located just before the mixer housing is responsible for controlling EGR rate. The EGR then passes to the intake manifold where it mixes with cooled charge air before being inducted into the engine. The EGR valve detail of Figure 1 also shows an EGR heater plate that is intended for use at low ambient temperatures.
What is exhaust gas recirculation ( EGR ) used for?
Overview Exhaust gas recirculation (EGR) is a NOx emission control technique applicable to a wide range of diesel engines from light-, medium- and heavy-duty diesel engines right up to two-stroke low-speed marine engines.
Which is the best flow meter for compressed air?
The EE776 flow meter is based on thermal mass flow measurement and is ideal for measuring the flow of compressed air and gases in pipes from DN50 to DN700. With the EE776 the consumption of compressed air This model is a thermal mass flowmeter for measuring gases including air and nitrogen in a wide range.
Some versions also used pressure taps upstream and downstream of the EGR control valve to monitor the pressure differential across the valve for EGR rate feedback instead of a venturi-type flow meter. By 2008, the venturi flow meter was removed entirely.
Overview Exhaust gas recirculation (EGR) is a NOx emission control technique applicable to a wide range of diesel engines from light-, medium- and heavy-duty diesel engines right up to two-stroke low-speed marine engines.
An EGR control valve located just before the mixer housing is responsible for controlling EGR rate. The EGR then passes to the intake manifold where it mixes with cooled charge air before being inducted into the engine. The EGR valve detail of Figure 1 also shows an EGR heater plate that is intended for use at low ambient temperatures.
How can I tell if my EGR valve has failed?
You need to confirm whether the EGR valve has failed or carbon deposits have began upsetting EGR system and engine operation. Look for a round, thick, metal disc about three inches in diameter. In most cases, you’ll find it around the top area and to one side of the engine. You may need to look between and under some components on your vehicle.
