This opening of the poppet valve
causes part of the coolant flow from the engine outlet to be taken through this radiator branch and enter the thermostat assembly.
These quantities were measured experimentally for different poppet valve
Chances are it will have ball valves where previous models had gate, butterfly, or poppet valves
Dick Fleming offers assembly and set-up instructions, a list of parts you can buy locally, and various sizes and styles of check and poppet valves
, for prices ranging from $56-$82.
This, Lotus Engineering said, enables control of the timing and lift displacement of the engine poppet valves
for each individual crankshaft degree of rotation.
But the holes for the internal flow path in the proprietary fixed poppet valve
that was tested were too small, restricting flow.
Gasoline powered Poppet Valve
Engines are only 22% to 24% fuel efficient.
The elimination of poppet valves
has also eliminated the need for frequent oil changes, cam followers and camshafts, push rods, valve springs and the lubrication oil from the valve system, which dramatically extends the intervals of engine oil changes.
The Coates rotary valves successfully replace the current complex poppet valve
train, providing a clear flow area when open and an effective seal when closed.
In fact, we were informed that standard poppet valve
engines were only lasting approximately a couple of weeks out in the field when running on natural gaseous fuels.
In contrast to the spherical rotary valve, the poppet valve
resembles a golf tee and is driven by linkages connecting it to the engine camshaft.
The CSRV system replaces the standard poppet valve
system including springs, valves, gears, camshafts, pushrods, cam followers, and oil with only two moving parts, that run on ceramic bearings.