Your average fuel economy in ATS.
- tigolebitties
- Posts: 235
- Joined: 15 Oct 2018 16:09
Re: Your average fuel economy in ATS.
For the last ~7100 miles on my 5700XE I've ran the DD15 505 and DT12-DA combo with all realistic settings and did WoT contracts(65mph max). Load average was ~35,500lbs. MPG average was 7.48.
Re: Your average fuel economy in ATS.
That sentiment applied mostly to the very small and often normally aspirated Detroit Diesel (the "blower" is for scavenging, it is not a supercharger) engines that were very common in fleet trucks, such as the "318". Those old 6V-71NA (426 cubic inches, 6.98 liters) and 8V-71NA (568 cubic inches, 9.3 liters) engines were quite small, compared to the other engines, and didn't have a ton of power. Fleets bought them because they're nearly indestructible, long lasting, got decent fuel economy, and didn't tear up the rest of the truck. They needed to be turned a higher RPM because they needed to run closer to peak HP than peak torque, simply because small, normally aspirated diesel engines do not make much torque. The small Detroit made peak torque at around 1450 RPM, and peak HP at around 2100-2300 RPM, they were run a little higher to allow for the drop between gears. The Detroit Diesel two stroke always sounded like it was turning a lot more RPM because it has two power pulses and two exhaust pulses for every one from a four stroke diesel. The 8V-71TA was a bit better, and often the owner operator who bought one had the injectors upgraded, adding quite a bit more power.SmokeyWolf wrote: ↑26 Dec 2022 05:42
2 cycle engines have such a narrow torque band and their operating range was 1700 to 2500 rpm. The old saying goes when it came to 2 cycle engines was you had to slam your hand in the door and get mad in order to drive it properly.
Even the Silver Series 8V-92TA is actually smaller (736 cubic inches or 12 liters) than the engines it was compared to (14-15 liters or more). And the 8V-92TA, while rated at a "lazy" 450HP, was often fitted with 100cc or 110cc fuel injectors, upping the rating to 500HP-550HP. The bigger 92 series Detroit Diesel two stroke engines actually made peak torque closer to 1250 RPM rather than 1450 RPM, and the peak HP came at 2150, they were often governed at 2350 RPM. The Silver Series 8V-92TA is pretty much the only two stroke Detroit Diesel to make it into trucks in the "modern era", past the mid eighties, other than a few fleets. It actually made it into the "DDEC" era (Detroit Diesel Electronic Control), even seeing a few installed with the DDEC IV control system that was more common on the legendary Detroit Diesel Series 60. A well tuned 8V-92TA DDEC IV will make 650HP, and it will do it in the same power band as a 450HP version. The 8V-92TA is so reliable and indestructible that the military still buys new ones in new vehicles, and Detroit still offers a factory rebuild service. They were even commonly installed in fire fighting equipment well into this century, many airports still use them in their fire fighting equipment. It's just about the only diesel engine that can go from cold and not running to running at maximum governed RPM and maximum power output in just seconds.
Re: Your average fuel economy in ATS.
one of my best result, 7.9 mpg for over 2000 miles
https://trucksbook.eu/delivery/40829495
using My cascadia, 2017 dd13 450 hp paired with a 13 speed manual with 2.85 ratio... following speed limit without exceeding 65mph
From Fresno CA to Beaumont TX
don't mind the police fines cause IA seem to be really insane in texas.... also I use a "hard economy" mod
https://trucksbook.eu/delivery/40829495
using My cascadia, 2017 dd13 450 hp paired with a 13 speed manual with 2.85 ratio... following speed limit without exceeding 65mph
From Fresno CA to Beaumont TX
don't mind the police fines cause IA seem to be really insane in texas.... also I use a "hard economy" mod
Re: Your average fuel economy in ATS.
Freightliner Cascadia 2019
Detroit DD13 505HP Engine
DT-12DA 12 speed Direct Drive AMT
6X4 with 2.26:1/2.31:1 axle ratio
Texas to California round trip, avg 9.3mpg
https://trucksbook.eu/delivery/41377102
https://trucksbook.eu/delivery/41380172
Vancouver WA to Yuma CA, total weight 79000 pounds, 9.6 mpg
https://trucksbook.eu/delivery/41328293
Yuma CA to Tacoma WA , total weight 80000 pounds, 10 mpg
https://trucksbook.eu/delivery/41332595
Detroit DD13 505HP Engine
DT-12DA 12 speed Direct Drive AMT
6X4 with 2.26:1/2.31:1 axle ratio
Texas to California round trip, avg 9.3mpg
https://trucksbook.eu/delivery/41377102
https://trucksbook.eu/delivery/41380172
Vancouver WA to Yuma CA, total weight 79000 pounds, 9.6 mpg
https://trucksbook.eu/delivery/41328293
Yuma CA to Tacoma WA , total weight 80000 pounds, 10 mpg
https://trucksbook.eu/delivery/41332595
- Thyme Lime
- Posts: 6
- Joined: 11 Feb 2023 16:11
- Contact:
Re: Your average fuel economy in ATS.
So this is not for showing off my fuel economy - which is poor IMO - but rather asking for how to improve it. I hope it is ok.
These are my truck's specs: https://imgur.com/a/iNp4dUW
This is my fuel economy: https://imgur.com/a/Y5gtSYG (I reset my trip info after I finish 4 weeks in game, I had 5 more days to go when I took the screenshot)
Two disclaimers first:
1 - I play with keyboard so I know that I don't really have much throttle and brake control. I use CC as much as I can. When speed limit is over 65, I don't exceed 70 mph.
2- I don't expect 9.0 or 10.0 mpg from W900 like can be achieved with aero trucks, though I still think 4.9 is kind of a poor performance. At 65 mph I rev around 1300 rpm, at 70 mph it's 1400 rpm. I pull loads between 35,000 - 41,000 most of the times. Maybe I picked a wrong gear ratio.
If you guys could give me tips, I'd appreciate it. Thanks in advance!
These are my truck's specs: https://imgur.com/a/iNp4dUW
This is my fuel economy: https://imgur.com/a/Y5gtSYG (I reset my trip info after I finish 4 weeks in game, I had 5 more days to go when I took the screenshot)
Two disclaimers first:
1 - I play with keyboard so I know that I don't really have much throttle and brake control. I use CC as much as I can. When speed limit is over 65, I don't exceed 70 mph.
2- I don't expect 9.0 or 10.0 mpg from W900 like can be achieved with aero trucks, though I still think 4.9 is kind of a poor performance. At 65 mph I rev around 1300 rpm, at 70 mph it's 1400 rpm. I pull loads between 35,000 - 41,000 most of the times. Maybe I picked a wrong gear ratio.
If you guys could give me tips, I'd appreciate it. Thanks in advance!
Re: Your average fuel economy in ATS.
@SerPounce
first: use sequential transmission type.(not with "smart" option)
use low diff. ratio transmissions for fuel efficiency. (like 2.70 or 2.85)
use smaller engine. (mx-13 is better than isx15 for fuel consumption. 13lt vs. 15lt.)
lower your rpms. dont go over 1400 or 1500.
dont use first gears when start, except necessary situations(like loaded uphill start).
use terrain to your advantage.
1-) dont go over 65, if your first priority is fuel efficiency.
2-) you can expect 9 or 10 mpg from W900. iirc air resistance is not a factor for fuel consumption calculation.
first: use sequential transmission type.(not with "smart" option)
use low diff. ratio transmissions for fuel efficiency. (like 2.70 or 2.85)
use smaller engine. (mx-13 is better than isx15 for fuel consumption. 13lt vs. 15lt.)
lower your rpms. dont go over 1400 or 1500.
dont use first gears when start, except necessary situations(like loaded uphill start).
use terrain to your advantage.
1-) dont go over 65, if your first priority is fuel efficiency.
2-) you can expect 9 or 10 mpg from W900. iirc air resistance is not a factor for fuel consumption calculation.
- Bandit & The Snowman
- Posts: 3239
- Joined: 23 Oct 2014 15:55
- Location: East Bound and Down
- Contact:
Re: Your average fuel economy in ATS.
Usual tips… lift and coast a lot. When you know you will have to decelerate soon, avoid using your brakes and jakes and just lift your throttle finger earlier to arrive at the new speed limit/curve/crossing/traffic light etc. just with the right speed. In traffic, keep your distance so you don’t have to brake all the time when the AI doesn’t know what speed to go at. Stay in high gear when coasting and don’t shift down as long as possible (shift down at idle revs) because lower gears/higher revs have more engine braking power. (That’s the engine’s internal friction, not the jake brake)
Re: Your average fuel economy in ATS.
@Bandit & The Snowman
Oh yes I use the weight I pull to my advantage. With the adaptive CC I'm hoping it'll be easier for me to keep up with AI, if it works well.
@ferdcasx
I've used sequential trans before, that's a good idea. I'll pick 2.85 I think.
I have c15 and x15 from Zeemods. I've been using CAT, do you think lowering HP would help? I have 523 HP under my hood right now.
Oh yes I use the weight I pull to my advantage. With the adaptive CC I'm hoping it'll be easier for me to keep up with AI, if it works well.
@ferdcasx
I've used sequential trans before, that's a good idea. I'll pick 2.85 I think.
I have c15 and x15 from Zeemods. I've been using CAT, do you think lowering HP would help? I have 523 HP under my hood right now.
Re: Your average fuel economy in ATS.
dont lower your hp. engine volume makes difference. if all you got is 15lt engines then go with max hp. you will have more power at least.
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