Discussion in 'The Daily Grind' started by Gord, Aug 1, 2019.
55.4 home last night, 67.2 this morning
Tank is up to 54.9 / 173 mi now.
I missed posting yesterday... but actually it was better than average:
97.1 MPG / 10.8 miles home to work.
68.0 MPG / 10.8 miles work to home. Now this is a record for this stretch, I like to think the warmer temps helped a bit. However, the number is a bit inflated, since the hybrid system just entered a regen event as I pulled into the garage, when I shut it off. So really I paid for it this morning.
Yesterday, the guess gauge finally moved down a bar, and the tank rose to 75.8 MPG / 112.2 miles.
Now today's results... this morning had the longer than normal warm-up run to regen the pack back to 4 or 5 bars, and also got stuck at a stop light while this was happening. Not good for MPG...
90.2 MPG / 10.9 miles home to work.
This evening was pretty lucky with traffic, and was able to glide through some stoplights which would normally be red. Less EV-only than last night, and I expect a normal length warm-up tomorrow morning.
64.7 MPG / 10.9 miles work to home.
The tank is down to 75.7 MPG / 134.1 miles.
What do you mean by that ? Regen event ? Do you mean that the SOC fell low enough that the ICE had to start up ?
Today , 65 deg F in Naperville , 63 in Wood Dale , 65 in Toronto.
35.0 miles , 65.1 MPG. Tank is at 189.3 miles, 67.0 MPG
53.6 / 5.3 home last night
72.5 / 5.3 this morning
Tank is up to 55.3 / 184 mi.
Good question. I think that phrase means something very different in the context of troubled early Honda hybrids, or diesel particulate traps.
I'm probably using incorrect terminology, but yes, by "regen(eration) event", I meant the SOC dropped to 2 bars and the ICE had to light up. I can see that is confusing, since "regen" is mostly used to refer to "regen(erative) braking". What is the correct term? Recharging event?
Anyway, today had a bit more driving, as typical for Friday. The morning drive went well, but traffic was much lighter than expected for the time I left.
96.1 MPG / 10.8 miles, home to work.
After work, I stopped by the post office (received the Certificate of Title finally!), got a haircut, and went home. Took all city streets, no freeway at all. Short trips are a challenge for FE even in this car, especially when they are uphill and require ICE on most accels.
52.4 MPG / 2.1 miles, work to post office.
55.7 MPG / 2.8 miles, post office to haircut place.
68.6 MPG / 7.9 miles, haircut place to home. Now that's more like it.
Current tank is down to 75.5 MPG / 157.9 miles.
Now, I'm off work Mon/Tue and we've got a short 4-day family trip planned... but we'll be flying out of SAN tomorrow morning. So I've got a ~80 mile, almost all freeway trip ahead of me tonight or early tomorrow morning. I'll see how that goes... bound to hurt the tank for sure.
I guess a lot of that depends on your highway speed. I did an almost 500 mile highway trip last year , to Nashville.
Speeds were moderate ( slower than other traffic but faster than I drive here ) about 58-70 MPH . A/C on all day ( June in the Midwest).
That's up to 70 MPH downhill , gradually losing speed to 58 MPG going uphill. As I recall , the adjusted fuel economy for that leg
was only 58 MPG. That's when I was wishing for a TDI or some other highway car. The Prius is SO good when the engine is off.
On the highway , a Civic 1.5T 6MT might match it.
So I decided to leave at the crack of dawn (5:48am this morning at home) down to my parents place. Overall, I did better than expected.
73.1 MPG / 76.9 miles, from home to parents place. Now traffic at this hour was fairly light, so I was able to keep speeds down most of the way, range was probably 45 to 65 MPH, with targeting ~50 on flat ground.
We'll see how my return trip will be on Tuesday night. See you guys then.
Today , 70 deg F in Naperville , 67 in Wood Dale , 70 in Toronto.
35.0 miles , 63.3 MPG.
Tank is at 323.6 miles , 66.8 MPG.
When I got on the highway ( and up to full speed ) fcd read 57.1.
23 miles later when I started my re-entry glide it said 62.1.
3.9 miles later . it ended up at 66.2 x .956 = 63.3 MPG.
I think I need to eliminate a lot of my gliding in the morning. I didn't do a lot today. I say "morning" ,
but this is well before dawn , so headlights are needed. Battery SOC drops too much.
Bummer that the seasons are catching up so soon. We're still pushing 100 degrees, but the days are already darker.
Driving the big van today so no numbers.
In your Prius? How's that a problem on Illinois-size downhills? When you're coasting in "READY," power to run headlights comes from the wheels or the traction battery (or a blend of both), not from the 12-volt---as does the considerably greater power to run the compressor when it's on.
A/C compressor ? That's only on if I'm on the highway. I just get concerned when my traction battery SOC drops. You may have observed this phenomenon :
You get home and before you turn off the car , you see that SOC is "normal" ( six bars ). the next morning ,it's at five and after 1-2 blocks it's four. I know it uses some battery
to aid acceleration after a cold-start ( and other times ) , but I think it's losing charge faster than it did 4.5 years ago. I think Toyota expects people to use the brakes every now and then,
but for my first eight miles ( before I get on the highway ) there isn't a whole lot of that. Almost none.
Today , 72 deg F in Naperville , 70 in Wood Dale , and 65 in Toronto.
35.0 miles , 65.4 MPG. Tank is at 390.6 miles , 276 remaining ,still at 66.8 MPG.
Well I'm working from home today.
Interesting! In contrast:
I get home and see (if I haven't messed up the final mile, which is usually mostly downhill) that the SOC is "normal" (six segments). The next morning, it's still at six segments. After 1-5 blocks, it's still at six, UNLESS I get hung up in congestion, red lights, or a downhill before the engine will stop reliably, in which case sometimes I can't prevent it from going to seven.
Yes, "it uses some battery to aid acceleration after a cold start." In fact, that's a huge understatement. It uses practically all battery and no engine to drive the wheels for the first ~1 minute after a cold start---unless you press the go pedal hard. That causes the software to assume you're desperate to avoid being rear-ended, and therefore force the cold engine to work. I choose to avoid driving the SOC down quickly to 3 or 4 segments by allowing the engine to do its warm-up thing during that first minute, before launching uphill into traffic. If I time it just right, I can launch just before the engine stops at the end of that minute, but late enough not to make a heavy demand on the battery. I suspect (but could be wrong!) that that's easier on the traction battery than your routine, at very little net cost in fuel burn.
Haven't driven my car since 10th. My drive Monday morning, 2UP, 59°F, mostly headwind WSW15:
49.8 / 22.6
Monday night, 2UP, made it to motorway by then had a detour on second half, 67°F, cross/tailwind SW8:
46.0 / 24.0
Tuesday morning 2UP, motorway route, no detours, 59°F, mostly headwind WSW12:
47.8 / 22.6
Tank down 0.5 at 49.3 (FCD 52.0) / 388.4 / Range 295 . Guess gauge F___«|««««E . UG down 0.1 at 49.8 / DTE 284
Lost 3rd pip (of 8) @ 328 miles
Today , 66 deg F in Naperville , 65 in Wood Dale , and 71 in tropical Toronto.
35.0 miles , 64.1 MPG. Tank is at 459.9 mies , 200 remaining , and 66.7 MPG.
68.9 / 5.3 this morning. 82F and humid. Ugh.
Tank is at 55.4 / 233. School starts tomorrow so this is probably the high point for the year.
Feed store run at lunch. About 95F out there.
59.5 / 5.0 - to feed store, add 150 lb
64.6 / 3.7 - to another shop
59.3 / 2.7 - to work
Tank is up! to 55.7 / 244 mi.
Last night, 2UP, made it to motorway and made same detour on second half as Monday evening, 65°F, crosswind S5:
44.6 / 23.7
This morning 2UP, motorway route, no detours, 64°F, head/crosswind SW12:
48.8 / 22.7
Tank down 0.2 at 49.1 (FCD 51.6) / 434.8 / Range 245 . Guess gauge F____|««««E . UG down 0.2 at 49.6 / DTE 235
Half tank @ 392 miles
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