Sir what is different between main engine fuel pump and aux engine fuel pump ?? Delivery valve will be present on both pumps or it will present only in aux engine fuel pump if it is yes why it is not present in main engine fuel pump???
The delivery valves are only provided on AE fuel pumps.... where as ME fuel pumps are with suction valve. The reason behind this is to keep the ME fuel injectors warm in stopped condition by circulation of high temp fuel oil....The oil flows via fuel pumps and fuel valves . For AE the delivery vv acts like a NRV and in stopped condition circulates the fuel via fuel pp to return line.
I was taught by russian chief engineer to keep in storage fuel injectors with loosen spring and tight it before installation. So that spring is not deforming during laying in storage
Hey hi...yes ur CE is also right....u can follow that practice.. These springs are of particular material and specially designed to withstand the tension for longer durations.....so it won't affect if u keep the spring tighten.
![KAYTRANADA - Witchy (feat. Childish Gambino) [Official Video]](http://i.ytimg.com/vi/jGK3YVmGZ3Y/mqdefault.jpg)
![NOSFERATU - Official Trailer [HD] - Only In Theaters December 25](http://i.ytimg.com/vi/nulvWqYUM8k/mqdefault.jpg)
Nice explanation sir.. waiting for pressure testing of fuel injectors and timing adjustment of fuel pump
Sir what is different between main engine fuel pump and aux engine fuel pump ??
Delivery valve will be present on both pumps or it will present only in aux engine fuel pump if it is yes why it is not present in main engine fuel pump???
The delivery valves are only provided on AE fuel pumps.... where as ME fuel pumps are with suction valve.
The reason behind this is to keep the ME fuel injectors warm in stopped condition by circulation of high temp fuel oil....The oil flows via fuel pumps and fuel valves .
For AE the delivery vv acts like a NRV and in stopped condition circulates the fuel via fuel pp to return line.
@@sealegend1627 ok sir got it
Sir if surveyor asked this question difference between ME and AE fuel pump?? What are all the answer we need to tell
Nice explanation
I was taught by russian chief engineer to keep in storage fuel injectors with loosen spring and tight it before installation. So that spring is not deforming during laying in storage
Hey hi...yes ur CE is also right....u can follow that practice..
These springs are of particular material and specially designed to withstand the tension for longer durations.....so it won't affect if u keep the spring tighten.
0:51