easyrider wrote:Electric motors are pretty well perfected these days and most sensors are electric..ie throttle position sensore and IAC valves and a host of others that stand up to heat for many years. Lest not forget computers have been running our vehicles for decades. Dropping in a small motor could be a lot simpler than replacing double cam shafts , chains, tensioners, etc etc. Lots of work there, moreso ,perhaps than dropping in a servo motor.The cars computer will do all the timing and brain work necessary like they time the injectors, but these motors at the outset would sure be costly , but then again replacing chains , belts tensioners etc would also have a hefty labor cost.I remember when computers first came on cars all the mechanics raved how the heat will destroy them.. Matter of time for things to get perfected and the bugs worked out.Most engines are four cylinders so four little servo motors seems simpler to me than replacing cams and all the rest. The question is will electric engines beat that technology.
True, but the circuit boards for any of those items aren't buried in the top of the engine. The video shows them mounting a huge control board
inside the top of the valve cover -- just about the worst place inside the engine for a circuit board (from a heat and vibration standpoint). However, I understand that that location makes the most sense for keeping everything together in the lab and looks the cleanest on a promotional video. I've used electric servo motors in a clean environment but never in a hostile environment like the inside of an engine, so I can only guess at what issues they might encounter. Don't get me wrong, I completely agree that this is the same kind of progression that we saw moving from carburetors to EFI. And my 2002 Saab can change spark ignition timing on the fly for each individual cylinder. IVT is the next step, right? It's just that it's in no way
less complicated than a mechanical setup. I've had a couple of vehicles make it past 200,000 miles and one past 300,000. I've never had any cam-related issues with any of them (one I had to change the timing belt at 150,000) and they were all still running nearly perfectly when they were sold. As for electric motors beating the race for efficiency (and power?), I also agree with you there. But there will always be people going in the opposite direction, too.
https://www.youtube.com/watch?v=Pa1DQ-FIQNI