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You brought up the hybrid, it's the fourth word in your first post. Perhaps it's short term memory that's lacking?

Geometric compression ratios are pretty meaningless in engines with boost or modified intake volume, as in Atkinson engines. @Wire4money is spot-on.

Anyone remember when distributors had points and a condenser? The "points" were switch contacts running on a cam so the switch opened and closed once for each cylinder on each engine revolution. Opening and closing the 12v circuit caused the ignition coil to produce a high-voltage pulse that...

None of the above. Remember, the 2.5L is extremely high compression, because it's designed to underfill the cylinder on intake by definition of the Atkinson cycle. It varies the fraction underfilled as one of the control parameters, but with the goal of getting more energy out of less fuel...

... forming the planetary component of a planetary gearset that has all three parts moving most of the time. Indeed

Then I'm afraid you're barking up the wrong tree. Ethanol has less energy, so it gives you worse mileage in a hybrid. This is data from my C-Max. The middle data is 91E0, the left 93E10. At right is a reduction in tire pressure (long story). An EcoBoost might notice the octane, but the Hybrid...

But is not pH the thing they're trying to control? I see TBN and AN as indicators of remaining pH control system capacity. As someone how got a Volvo to 330K miles with no engine work, doing 10K oil changes with synthetic oil 20 years ago, I trust the oil monitor Ford puts in these cars, and I...

What's the Escape breakdown, 1.5L/2.0L EcoBoost vs. hybrid? Can't speak to order vs. stock because I knew no dealer stock would have a block heater. The factory installed it, but didn't route the harness out the front. It took the dealership 3 tries, the last after pointing to a diesel in the...

The Stop-n-Go Cruise feature does a great job of drafting.

I know folks who think that.... they do night rallys. The problem with studs is the negative effect on clear-road performance. They get in the way of the rubber gripping the road. There's a certain irony that car that taught me about studded snows was a 1970 Maverick.

Will be nothing like your Maverick. (from Car and Driver) " The 4xe (pronounced "four by E") sandwiches a 270-hp turbocharged inline-four between a 44-hp motor connected through the accessory belt at the front and a 134-hp motor taking the place of the transmission's torque converter at the...

I intentionally chose 60% "Usage" because this battery is an energy buffer, not a primary source. It's only rarely fully charge, or fully discharged, while these are common states in a plug-in hybrid. Thanks, I'm gratified it made sense. Is a plug-in so all bets are off concerning the HVB...

I've posted this on other forums. I assume Ford's engineers are as good as Toyota's, and that there's enough cross-licensing that intellectual property isn't a barrier. The first shows the degree of advancement over a decade of trying to widen the sweet spot. The green area is 34% on all charts...

And that's already scrogged. Fuelly data for 2020 2.0L Escape (27 mpg) and 2021 2.0L Bronco Sport (23 mpg) with nobody hitting 30 mpg. Easy to see which one is the brick. Escape Hybrid average is ~38 mpg.

Well, I haven't posted the oil analysis from another person's 250K mile C-Max, because he didn't spring for TBN. He does use extended drain intervals, so this was really old oil, and I would really like to know the TBN. I can't find it on their site, but Blackstone once posted a chart of TBN...

That's no longer true. The statement since ~2016 is: "no all-season tire will work on ice as well as a dedicated ice tire." Blizzaks are "studless ice tires," using a very sophisticated foam rubber technology in the upper half of the tread depth. The bubbles give water a place to go, so the...

True, but that's small compared with the impact of a high-RR tire. Try some bias-ply tires if you want to kill mileage.

This chart summarizes the energy flow when driving a hybrid. - the big store is the GAS TANK, with 500kWh of energy, of which we get to use 40%, or 200 kWh. - burn fuel to charge the BATTERY or put the car into MOTION. - once in MOTION, LOSSES continually slow the vehicle, determining the...

Don't get me started.... OK, do. The basic idea is to use the ICE under load at low RPM, where it's most efficient. Store energy in speed, altitude and HVB charge, and then switch to EV for low-load operation, aka going down hills. It's called "pulse and glide" if you want to look up the...

The EPA has defined the energy content of 1.0 gasoline to be 33.7 kWh. I think that's E10, because... Based on energy/kg, I get 35.24 kWh for 100% gas, 33.25 kWh for E10. Bottom line is the tank holds about 500kWh of energy. Best we can do is waste 60%, so there's 200kWh usable energy in the tank.