Tweet
I know that a Camshaft turns 180 for every single rotation of the crankshaft, but what I don't know is the turning speed of the fuel pump.
I assume it turns at the same speed as the Camshaft to ensure that when the marks are alligned that the camshaft position 'tallies' with the crank postition.
Edit:
The more I learn about this engine the more I find it excellent:
Crankshaft gear drive to Fuel pump, which turns at half engine speed, then cambelt takes drive to the camshaft which also turns at half engine speed.
I was confused how in the Toyota engine manual they wrote when the Crank is aligned to the mark '4TDC', I thought but hey it could be 180° on the camshaft, but no not with the way its all timed with the gears.
And I just met the oil cooler in the coolant....
I assume it turns at the same speed as the Camshaft to ensure that when the marks are alligned that the camshaft position 'tallies' with the crank postition.
Edit:
The more I learn about this engine the more I find it excellent:
Crankshaft gear drive to Fuel pump, which turns at half engine speed, then cambelt takes drive to the camshaft which also turns at half engine speed.
I was confused how in the Toyota engine manual they wrote when the Crank is aligned to the mark '4TDC', I thought but hey it could be 180° on the camshaft, but no not with the way its all timed with the gears.
And I just met the oil cooler in the coolant....