Prius (Gen 3) Fuel :: Using Electric Only And Pulse Hard Maximize Commute?
Apr 15, 2011
When I first bought the car I was resetting the trip/mpg every day and getting a daily reading. Then I started to realize that wasn't accurate as a per tank reading. So now I judge my weekly trip/mpg. Currently I am getting 57-59 mpg on the MFD(I do not have a scangauge yet) - so i guess that would equal 54-57 actual.
My commute is 43 miles one way. half of it is mixed city driving a mile of low speed out of my neighborhood to a 55 mph with two 2 mile 35 mph zones and then the second half is interstate.
I have been working on keeping the SOC high for the 55 mph so that i can most of the time slip in and out of high speed "stealth" mode. Usually with the MFD around 69-75? and not drop speed too quickly. maybe a mph per 2 miles depending on the grade.
I try the pulse and glide in the 35 mph zones. coast in, then glide as far as I can and pulse back up. I have been playing with a couple ways,
OPTION 1: use in electric only-takes longer and kills SOC.
OPTION 2: Pulse hard into el+ICE and its crap mpg for a small amount of time. Pulse gently into ICE and decent mpg for a little longer amount of time.
View 9 Replies
Advertisement
Did use cruise control to maximize battery changing when coasting to a red light or slowing down for a speed zone? Just keep in mind your vehicle will slow down fairly rapidly with no brake lights- so I tend to to do this during those glorious moments when there are no cars behind mine. When you see an approaching red light (with cruise control on) just hold the cruise control switch down and the vehicle will automatically power the generators to max. In this way you will not lose any potential battery charge to the actual brake pads. Be advised also the generators will stop and the cruise will cancel automatically at 22mph which is usually slow enough to avoid engaging the brake pads until you are pretty much stopped. Just thought I would share a neat trick with fellow hypermillers. **Also note this may be a less effective charging method than long drawn out braking but is most effective for rapid slowdown situations like unanticipated red lights, speed zones or expressway off ramps ect. and requires some skill to do safely.
View 3 Replies
I'm relatively new with my 2011 Prius. I've been averaging about 53.6 mpg, but I feel as if I can do better. I've set 54 mpg as this "magic number" that I'm aspiring to, but if I ever reach that, the number will probably rise to 55 and so on ... (As an aside, if I just set the cruise control while on the commute I'm about to describe, I get the same mileage as I do when I'm working on hypermiling, so I don't know if it's worth the effort with this route).
My daily commute is around 15 miles. About half of this is a hilly and curvy road. The PSL on that portion is 55 mph, and it is a two-lane (one lane in each direction) road. At least one of the hills are so steep that if I DWL, I'll lose between 15 to 20 mph from the bottom to the top; that's with the HSI "pegged" right before the power section of the line. I can maintain speed, or at least lose less, if I go into the power area. Additionally, there are several curves at the bottom of the hills where I must brake down to around 40 mph to safely negotiate the curve.
Finally, it is well-trafficked road as well, so, while observing the speed limit, I may have 10 cars piled up behind me, which makes me nervous.
View 19 Replies
While pulse and glide, is it better in Eco mode or normal mode with Prius c?
Eco mode will take more time to pulse, it may lower mpg?
Nexus 7 ?
View 7 Replies
I am a new 2010 prius owner and I am very interested in obtaining the max MPG in my new car I have read and seen video with regard to the pulse and glide method. My question is
1. can you shift into neutral on the glide
2. can this do any harm to the car.
View 17 Replies
Two weeks ago we were driving across rolling hills in southern Ohio. I started to wonder, "What would be the perfect road for the Gen 3 Prius?" Is there a road shape that would allow the benefits of pulse and glide without the speeding up and slowing down?
Let's assume no net elevation change on an interstate highway and a driving speed of 60 or 65 mph. To stay in the most fuel efficient engine ranges for the ICE, we'd want down-hill stretches where the power demand shown on the hsi would be in the bottom 1/4 of the total Echo range, and up-hill stretches where we could stay in the top 1/4 of the hsi Echo range (just below Power).
Would the optimal ascent and descent angles be the same, or would the angle of decline be shallower that the assent angle? Would mileage (mpg) be better on this ideal up and down road than mileage on a flat road at constant speed?
View 11 Replies
Correct me if I'm wrong - Pulse & Glide is not really possible at speeds higher than, say 120-130km/h (74-80mph). I have noticed on my last trip that if you want to keep 130km/h average and you pulse up to 140km/h and glide down to 120km/h, when "gliding" the engine never shuts down, and the glide period is very short.
When pulsing back to 140km/h it takes a "long" time and the instant fuel consumption is "high" (e.g. 6-7L/100km) while when "gliding" you are actually at 2-3L/100km, which means on average you are at about 5L/100km, which is what I would get in any case if keeping speed constant with the CC at 130km/h.
View 10 Replies
I own a Prius C 2013. I read about Pulse and Glide, and I also watched youtube about it. I somehow have never seen a situation where there is no arrow in the Energy Monitor. The best I have ever seen is arrow coming out of the battery only which is EV mode. Some people say 35-45 is the best speed for P&G, but I never see "no arrow". What speed makes the car run without arrow?
View 19 Replies
After a long day at work, I stepped out of my '06 Prius and was greeted by an obviously struggling CHRS pump. It sounded like it was having a hard time maintaining speed, and to my ears was screaming; better replace soon...
View 2 Replies
One of my pet peeves about the Prius Plug-in is that the car won't stay in full electric mode under hard acceleration. Any mods to keep the car in pure electric propulsion?
View 19 Replies
After my electric water pump was replaced under the recall my mileage went from 45 mpg to about 30 mpg. Part of this might be due to new tires and cold snowy weather (CT !) but I have never seen such a drastic drop in performance (2005 Prius).
View 12 Replies
I have an 07 with 81.5K miles. Just a few weeks ago I've noticed a "rumbling" sound when starting the car in the morning before my AM commute. To me it sounds like an exhaust issue. This sound is becoming more frequent and now occurs most of the time while I drive. The volume has not increased, only frequency. The engine sounds ok, and no lights or indicators are showing.
MPG performance is down from 45-50MPG to about 40MPG but I think this may be because it's been extremely cold here lately and maybe the gasoline bladder has shrunk? Anyways, what this could be? If it's an exhaust issue could it require replacing the entire exhaust system because it's a hybrid (one mechanic friend I have said this might be the case)? Could it be something as simple as getting a new muffler?
View 8 Replies
I have a f53 motorhome and 4 out of the 8 injectors pulse. The front 2 and the back 2 don't pulse. The middle 2 on both sides work perfect. Why would they not pulse and only give out positive on the two wires to the injector on the one that don't work. The ones that work they pulse.
View 8 Replies
I got a problem with the injectors there getting power but no pulse, what do i need to do to trace the problem, not sure what to do next!
View 7 Replies
04 6.0 with no FICM sync and no fuel pulse width. Crank/cam sync yes. All other data is good. Tried known good FICM and PCM but nothing. Had glow plug codes thats it. Found chaffed wires due to mice. Replaced damaged Injector harness still nothing. Fuel pressure is good btw.
View 13 Replies
I have great success doing pulse and glide in city. I once drove 32 miles non highway at 90mpg in a single trip using this technique. But it seem that it is impossible to do so on the highway, speed goes down too fast during glide. I found that too many pulses on highway actually decrease mpg. How to greatly improve mpg in highway driving?
View 19 Replies
As I understand it pulse and glide should work at pretty much any speed. I'm trying to adopt pulse and glide but I drive on mostly 55 MPH hilly roads. If I'm in HV mode and have some EV range I find I can only get ICE shutoff below 42+/- MPH. However if I switch to EV mode as I back off the pedal the ICE will shut down at speeds up to 62+/-MPH. Switching from EV to HV while gliding at speeds above 43 MPH causes the ICE to resume turning. So I've tried accelerating to my desired pulse speed in HV coordinating releasing the pedal with selecting EV mode to begin the glide then beginning the next pulse by simultaneously pressing the pedal and mode button. Alternatively I can stay in EV mode for the glide then floor the pedal to restart ICE but that risks getting an undesired higher less efficient ICE power level and doesn't allow lower power pulses to allow glides to begin on downgrades.
View 15 Replies
I am new to the Prius and have noticed that when cruising the car seams to surge or pulse while driving. Is this normal?
View 3 Replies
Traffic permitting, pulse and glide or coast seems to work for the mpgs for those dreaded 1 mile trips on a cold engine. If no one behind, I'll just get off the gas and coast down the street, usually to the next stop light. Funny how often the light is red. If a bunch of ICEers are close behind, coasting not an option.
View 3 Replies
i have had this problem before where the relay for the electric fuel pump would quit intermittently, and had it fixed. but, i suspect this is acting up again. so, i was gonna do it myself. there are 2 relays strapped to the radiator overflow can. is one of them the relay i am seeking?
What started all this, motor was running really rough at idle, but ran ok once moving. So, I replaced the spark plugs, and cleaned the contact areas in/on the cap and bug. motor started right up, and actually sounded good... for about 10 or so seconds, then it died, like the gas was shut off. I do have spark.
How to check/test the fuel pump relay and could pass this info on to me would be good. i do have test light, and DMM.
View 3 Replies
I have a newly remanufactured Holley 1835 carb which has had an electric choke added to it. My '59 F-100 has the original electrical system in place. Where would you recommend running the positive and negative wires from the choke? No instructions came with the carb.
View 8 Replies
