keybman Report post Posted May 14, 2013 Thank you lolder and hybridbear. I have learned a lot here, and sometimes have to sift through all the knowledge to find the right answers. 1 gadgetguy reacted to this Quote Share this post Link to post Share on other sites
rjent Report post Posted May 15, 2013 Well hell, then I give up. If engineering says it won't work, then it won't work .... :hysterical: Quote Share this post Link to post Share on other sites
lolder Report post Posted May 15, 2013 (edited) Here's a !.8 L ( 2ZR-FXE ) and 1.5 L. ( iNZ-FXE ) Prius ICE fuel chart.http://ecomodder.com/wiki/index.php/File:Toyota_2zrfxe_1.8l_prius_bsfc1.jpgThe 2010+ years have the 2ZR. The heavy line is where the engine is run. The left vertical torque scale is essentially throttle opening. The load and rpm of the engine is manipulated by the transmission and generator for the operating point to always be near that line. This can be very precisely done with electronics and the eCVT. The Ford charts have a similar shape.. Edited May 15, 2013 by lolder 1 hybridbear reacted to this Quote Share this post Link to post Share on other sites
rjent Report post Posted June 9, 2013 OK, I said that I would update when I had something. My conclusion is that it is too erratic to prove either way. I go out and start the thing in the morning, idle the ICE just until the thermometer turns white, do my 2 mile round trip and I get anywhere from 29 to 50. I do know if the battery has a high charge, it gets better (naturally), but the ICE still runs during part of the trip. So my conclusion is that I am convinced that the prestart, particularly in the colder mornings, does help. This engine at idle doesn't burn much gas at all, and a hell of a lot less gas that if it is forced to propel the car. But, I can't reproduce on video a real world consistent example, so I guess it comes down to whether you choose to or not, it's up to you some of us do and some of us don't .... :) 2 gadgetguy and acdii reacted to this Quote Share this post Link to post Share on other sites
gadgetguy Report post Posted June 10, 2013 OK, I said that I would update when I had something. My conclusion is that it is too erratic to prove either way. I go out and start the thing in the morning, idle the ICE just until the thermometer turns white, do my 2 mile round trip and I get anywhere from 29 to 50. I do know if the battery has a high charge, it gets better (naturally), but the ICE still runs during part of the trip. So my conclusion is that I am convinced that the prestart, particularly in the colder mornings, does help. This engine at idle doesn't burn much gas at all, and a hell of a lot less gas that if it is forced to propel the car. But, I can't reproduce on video a real world consistent example, so I guess it comes down to whether you choose to or not, it's up to you some of us do and some of us don't .... :) Agreed.. My own experience is back and forth. Some days it works out some it doesn't and now for the most part since it's warmer I just get in and drive lol... Quote Share this post Link to post Share on other sites
rjent Report post Posted June 10, 2013 (edited) Me too. As soon as it cools down again I will start prestarting again, I am convinced that it helps the short trips and overall mileage. Each of us should experiment. Agreed.. My own experience is back and forth. Some days it works out some it doesn't and now for the most part since it's warmer I just get in and drive lol... Edited June 10, 2013 by rjent 1 gadgetguy reacted to this Quote Share this post Link to post Share on other sites
