Torque Cars chat forums - View Single Post - Two stroke diesel: Build a simple ECU ??? Do-able, or not?

malc9141 · 08-04-2008, 08:00 AM

HDi

We must clear this up. If you imagine a piston in a cylinder, but of very small dia, and the piston is a rod, with a waist machined into it, you can put a large pressure into that space (the waist) and still move the piston up/down because there's no net force. You let the fluid in one side, and then out the other, as the piston moves.
The fluid pressure opens the the pintle and when the pressure falls (almost at once), a spring closes it. The only work is ultra rapid shifting of the piston against its inertia. The rail pressure doesn't come into it.

As for my info about capacitors etc, there are inconsistencies (from different sources) which I'm still trying to resolve.

I emphasise that I'm pleased +++ at the reponses becouse we are slowly moving along.

Malc

08-04-2008, 08:00 AM	#30 (permalink)
malc9141 Member Tuner Join Date: Oct 2007 Location: sheffield Posts: 51	Re: Two stroke diesel: Build a simple ECU ??? Do-able, or not? HDi We must clear this up. If you imagine a piston in a cylinder, but of very small dia, and the piston is a rod, with a waist machined into it, you can put a large pressure into that space (the waist) and still move the piston up/down because there's no net force. You let the fluid in one side, and then out the other, as the piston moves. The fluid pressure opens the the pintle and when the pressure falls (almost at once), a spring closes it. The only work is ultra rapid shifting of the piston against its inertia. The rail pressure doesn't come into it. As for my info about capacitors etc, there are inconsistencies (from different sources) which I'm still trying to resolve. I emphasise that I'm pleased +++ at the reponses becouse we are slowly moving along. Malc __________________ malc9141