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The Volt's engine is actually very efficient for a traditional ICE engine, and it is sized very well for the application. Honda has done good work with their Vortec engine and variable valve timing, and that is the route GM may need to take, unless they have other ways to squeeze more power out of less fuel.Ī gas turbine sounds intriguing, and this seems like a good application, since turbines don't do well at slower speeds, they are supposed to be very efficient, and presumably they wouldn't vibrate as much as a piston engine? I would be interested in a quieter engine that vibrates less, but, once again, efficiency is priority number one for me.Ĭlick to expand.No, no, and no. It only engages with the wheels at higher speeds with low load. The speed limit on some highways in the US is 75 mph, and I have no doubt that many will want to drive over 80, even if I never will.Īs far as I'm concerned effeciency is the only thing that is important, since the engine plays no part in getting the car going from a stop except to generate the electricity for it when the battery is low. Some potential buyers would not want a car with a top speed of 80 mph. I think an engine that could just get the car over 80 mph would be a mistake, simply because it would limit its appeal. So, is the goal of perfect range extender to be as fuel efficient as possible or is it to powerful enough to provide enough KW's under all scenarios? What do you think?
CHEVY VOLT RANGE EXTENDER ENGINE PLUS
Plus if in the future the ELR is to use the same engine again as the volt then it would be able to provide more performance that is expected out of such a vehicle. Where as the 2.0L Turbo is said to be too big of an engine, yet I believe it would produce enough KW to keep the battery at a constant state of charge when driving up steep inclines for extended periods of time. But then if you don't know your terrain or forgot to put the vehicle into Mountain Mode you could potentially drop your battery to the point that you would have to pull over. The lotus engine produce less KW's, than the current 1.4L, but it said to be a purpose built range extending engine.
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Lots of people were complaining that this was too big of an engine for the Volt. Last summer, word broke out that the 2014 Volt would drop the current 1.4L for a 2.0L turbo engine. It is a 3 cylinder that can produce 35KW, or there is a supercharged version that will produce 50KW. In doing a quick google search I found that Lotus has or is developing a purpose built range extending engine to perhaps be sold to OEM's. They performed these tests to see if the engine could keep up on the steep incline, so please no "They should have been in Mountain Mode" comments. According to some other forum contributers they stated that when driving on a steep incline for an extended period of time that the engine does not have enough power to keep the battery at a constant level of charge and in fact the battery will start to drop below the floor buffer if ran long enough. The current 1.4L engine produces around 65KW (wiki says that it does this at around 5600rpm) but can also do 75KW at 6000 rpm. What would the perfect Range Extending Engine look like with current technology? It has been said that the current 1.4L engine used in the Volt is not the perfect type of engine for this type of vehicle.