What is effective stroke in fuel pump?
Fuel pump delivery is controlled by suction and spill valves. When the spill valve opens, end of injection occurs. The effective stroke is controlled by adjusting the suction and spill valve’s eccentric position.
How to set fuel pump timing in I.C engine?
It is generally accepted to set fuel pump to start injection at 15 degree BTDC. For Vit engines the fuel pump timing can be easily set by; adjusting the relative height of plunger with respect to the barrel. One can retard the injection by lowering plunger and advance by increasing its height / relative position.
Why is the timing of fuel pump important?
The right amount of fuel and its timing are extremely critical because it regulates the combustion of fuel and the speed of the engine. Therefore, maintaining precise timing is important every time the timing belt of an engine has been replaced or adjusted.
How can I tell if my fuel pump timing is wrong?
The best and easiest way to find if there is possible deviation in fuel pump timing is to take draw card diagram. To take the draw card diagram place the indicator instrument to the indicator cock; with the indicator drum out of phase of the piston stroke by 90 degree.
Why does fuel pump timing cause dark smoke?
The darkness or blackish nature of exhaust gases depends much upon the fuel atomization and fuel pump timing. Proper injection at set point of time will lead to complete combustion producing clean exhaust gas; while any deviation in injection timing results in incomplete combustion and thus dark smoke full of shoot and unburned particles.
What is the timing of the fuel pump?
Time Engine pump timing begins with the timing of the fuel injection pump drive gear to the camshaft gear. The first step is the location of TDC of the compression stroke for cylinder Number 1.
What do I need to change the timing on my diesel pump?
All you have to do is rotate the pump with a screwdriver and socket wrench — standard tools you can find in your garage or toolbox. You need to make sure you accurately measure the timing adjustment with a timer meter or probe for reading. Any small movement of the pump will cause massive timing changes.
Where do you set the timing on an injection pump?
The front of the motor has a set of gears in the front to set the timing. Having just gone through timing my B5100 (two cylinder, 500cc, same gear setup) I can give you a few hints. First one shim changes the timing a lot, so start there.
Where is the timing on a Cummins pump?
With the valves on #6 on overlap (the rockers are crossing each other rising and falling) #1 should be close to Top Dead Center (TDC) on the compression stroke, which is where we’ll need it to check timing.