Towing with a 2022 Ford 150 3.5 EcoBoost
Hello everyone How is everyone's experience towing with this truck, as I am considering ordering the truck. Specs: GCWR 17,500, Max Payload 2,190 Max towing 12,300 Also considering ordering/to...
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Confusing ICE braking between a gasser and diesel
Diesels have exhaust braking via an exhaust valve (butterfly is the norm) that uses the piston compression & exhaust motion as braking power.
What that means is that the diesel cycle's higher compression ratio resistance is increased with the exhaust partially to totally blocked. That has the piston face a bigger brick wall during both the compression stroke and exhaust stroke.
On a gasser, it is just pumping losses from having to turn (crank) the whole drive train faster without fuel.
Therefore, bigger gasser engines has more mass to 'crank', will have more engine braking.
Of course, the diff & tranny gears plays. As lower gears (higher numeric) will try to force the engine crank to spin faster (the rotating mass is forced to turn faster)
A tiny displacement ECO will not have that much mass to force and will not provide as much resistance as a larger displacement.
Diesels have exhaust braking via an exhaust valve (butterfly is the norm) that uses the piston compression & exhaust motion as braking power.
What that means is that the diesel cycle's higher compression ratio resistance is increased with the exhaust partially to totally blocked. That has the piston face a bigger brick wall during both the compression stroke and exhaust stroke.
On a gasser, it is just pumping losses from having to turn (crank) the whole drive train faster without fuel.
Therefore, bigger gasser engines has more mass to 'crank', will have more engine braking.
Of course, the diff & tranny gears plays. As lower gears (higher numeric) will try to force the engine crank to spin faster (the rotating mass is forced to turn faster)
A tiny displacement ECO will not have that much mass to force and will not provide as much resistance as a larger displacement.
