The mixing pipe 52 is supported by a connection to either the compressor housing 68 or the intake tube 44so the mixing tube 52 is perfectly aligned with the compressor wheel shaft PM is a non-gaseous product of combustion commonly seen as smoke. The intake manifold 18 is configured to intake an intake gas, and the exhaust manifold 20 is configured to exhaust an exhaust gas. Intake air 41 flows through a second passageway, or an intake tube 44toward the compressor wheel 42 ; the intake tube 44 is connected to the compressor wheel housing Ref document number : The main components are: scrubber, cooler, water mist catcher, blower, shut-down valve, change-over valve, water treatment plant WTP consisting primarily of the buffer tank, NaOH dosing system and water cleaning unit. The EGR valve 44 is configured to control how much of the exhaust gas becomes the recirculated portion of the exhaust gas, and the EGR cooler 70 is configured to cool the recirculated portion of the exhaust gas. Exhaust gas recirculation air handling system for an internal combustion engine.
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However, instead of a pump, many of these systems ended up using a hybrid Position of valves 1, 2 & 3 is typical for LP EGR operation at high engine speeds and loads. The more condensate is formed due to EGR cooling, the more likely.
USB2 System and method for condensate removal from EGR system Google Patents
In an engine equipped with a Low Pressure Loop (LPL) EGR system. require a pump to purge the condensate reservoir. A better choice is to. 2% – 3% over drive cycles through pumping and heat loss reduction, and up to 16% or condensation limitations as exhaust gases flow through the LP-EGR.
A collecting vessel is located at or downstream of the EGR cooler for receiving condensate, and a condensate evacuation line is in fluid communication with the collecting vessel for receiving condensate from the collecting vessel.
A fourth exhaust passage 38 on the EGR system 22 permits the fluid communication of the exhaust manifold 28 with the EGR cooler The EGR valve 44 is configured to control how much of the exhaust gas becomes the recirculated portion of the exhaust gas, and the EGR cooler 70 is configured to cool the recirculated portion of the exhaust gas.
EGR Systems & Components
Method and arrangement for exhaust-gas recirculation in an internal combustion engine. The effects of high level of EGR rates on a spark ignition engine are summarised in the table below:.
of the negative pressure drop to atmosphere (pumping would be necessary). Also. A cooled EGR passage is downstream of the EGR cooler, and an air intake line is F02B37/00 Engines characterised by provision of pumps driven at least for part In general, engines using EGR to lower their NOx emissions can attain lower.
USB2 Power system comprising a condensation injection system Google Patents
The evacuation of EGR gas may result in the loss of pressure and flow of the. Low Pressure and High Pressure EGR Pumping losses at different HP/LP-EGR-splits Switching between HP-EGR and LP-EGR to avoid condensation.
Such conditions may lead to poor ignition characteristics.
To illustrate, if the determined power level is relatively high, then the ECU 58 may, for example, adjust the condensation injector 34 to remain open for a relatively long period of time for a given injection, so as to lower the NOx levels in the exhaust, which tend to be relatively high during times when the determined power is also relatively high. CNB en. It is very difficult to permanently remove the droplets out of the system in an area downstream of the compressor because of the negative pressure drop to atmosphere pumping would be necessary.
As stated above, providing condensation to a cylinder slows the NOx formation therein. Effective date :