What happened to the envirofit envirokit?

[oil pan 4]

I believe it.
The very large low speed 2-stroke diesel engines used in ocean going ships use the most thermodynamicly efficient engines in the world.

Originally Posted by rmay635703

The original Dodge Neon was going to be a DI 2 cycle but because of the witch hunt against lean burn and Nox it got shelved at the last moment.

I guess we are lucky to still have diesel engines since we seem to have an abondance of idiots that only seem worried about what comes out the tail pipe of the vehicle and nothing beyond that.

[cRiPpLe_rOoStEr]

Originally Posted by oil pan 4

I guess we are lucky to still have diesel engines since we seem to have an abondance of idiots that only seem worried about what comes out the tail pipe of the vehicle and nothing beyond that.

There are lots of those idiots everywhere. I know one who I had a few arguments with while used to brag about the supposed lower environmental impact of hybrids, but recently bought a Renault Clio II Campus (still available brand-new in Brazil). At least it can run on ethanol, while the currently-available hybrids usually can't

Anyway, we can't really neglect the effect of some tailpipe emissions, but there is also some huge energy expenses that come from industrial processes to refine petroleum, or to make chemicals like DEF, and also the logistics involved to make it available to the final customer.

[Beavinator]

I have an Aprilia SR50 that is actually a direct injected 2 stroke. It has a fuel injector that injects straight fuel into the head and there is an air injector in front of the fuel injector. There is an air pump that run off a cam on the crankshaft for the air injector. Oil is injected to the intake manifold right before the reed valves. Its a great system but I would love to find a way to get into the factory ecu and make changes to get more performance out of it.

[cRiPpLe_rOoStEr]

Aftermarket support for direct-injection 2-stroke gassers has not been so strong. Well, the same system featured in Aprilia and Piaggio motorcycles is also used in many outboard motors, but I didn't even find any tuning device compatible with that application.

[Miller88]

I always find it interesting when I read articles about Chrysler group doing research and development on things.

If they did all of this research and development ... howcome in the 90s and 00s they made pure garbage?

If they did make a two stroke DI neon ... the car would still fall apart in 50K miles.

[rmay635703]

Originally Posted by Beavinator

I have an Aprilia SR50 that is actually a direct injected 2 stroke. It has a fuel injector that injects straight fuel into the head and there is an air injector in front of the fuel injector. There is an air pump that run off a cam on the crankshaft for the air injector. Oil is injected to the intake manifold right before the reed valves. Its a great system but I would love to find a way to get into the factory ecu and make changes to get more performance out of it.

There was a "Gameboy" cartridge that could tune Aprilia DI systems, you will need to search around a while, there is one place in the US that tunes these from an Motocross perspecitve.

Search around and you should be able to find it.

[cRiPpLe_rOoStEr]

An interesting setup was recently introduced by KTM but, surprisingly, featuring port-injection instead of DI. Not sure if that would allow lean-burn in the same proportion, but seems more suitable to overcome the NOx issue.
KTM FI Two-Stroke Info: The Scoop on TPI (Transfer Port Injection) - Dirt Bike Test

[rmay635703]

TBI on a 2 cycle just adds power, fuel still can escape out the exhaust.

The funny part is my old neglected Subaru 360 that is carb'd goes lean at cruze and injects oil as needed can pass emissions.

It's harmonically tuned on intake and exhaust maximizing torque and minimizing fuel lost out the exhaust.

But it doesn't really rev past 7000 rpms, enforces economy over power

[cRiPpLe_rOoStEr]

Originally Posted by rmay635703

TBI on a 2 cycle just adds power, fuel still can escape out the exhaust.

The funny part is my old neglected Subaru 360 that is carb'd goes lean at cruze and injects oil as needed can pass emissions.

It's harmonically tuned on intake and exhaust maximizing torque and minimizing fuel lost out the exhaust.

But it doesn't really rev past 7000 rpms, enforces economy over power

Even though 7000 RPM is quite high for a car engine, they usually operate at a narrower revving band compared to motorcycles, which might allow to improvements on torque and minimizing fuel loss.

[rmay635703]

Originally Posted by cRiPpLe_rOoStEr

Even though 7000 RPM is quite high for a car engine, they usually operate at a narrower revving band compared to motorcycles, which might allow to improvements on torque and minimizing fuel loss.

A 2 cylinder 360 CC car engine needs all the revs it can get

Lean Cruze is around 5000rpm

Power band is quite narrow

Those who TBI the car can push 9000rpms and usually loose economy but gain a lot of power.