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Cummins NH-220 Engine for Ats

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17-08-2018, 11:05
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Cummins NH-220 Engine for Ats
Version - v1.31.x
Credits: - vsTerminus

Description:

Cummins NH-220 Engine for American Truck Simulator

This mod adds a 1959 Cummins NH-220 engine to the game!

About The Engine
The NH-220 is a 12 litre, naturally aspirated engine (no turbo, no supercharger)
from 1959 which produces 220HP (164kW) and 606lb-ft (821Nm) of torque.
There were versions of this engine made later which had either a turbocharger (NH-262)
or a supercharger (NHS-275), but this mod only adds the 220.

The NH-220 was found in trucks, heavy equipment, marine, and as a generator.

This engine was originally known as the NHB-600 and made only 200HP,
but in 1959 Cummins had it producing 220HP and decided that was enough to justify renaming it.

Maximum tow capacity is going to be in the area of 50,000lbs, but is somewhat reduced with a steep enough grade.


About The Mod
You will find four horsepower options for this engine in all vanilla trucks and many modded ones too.


The first one is based on official specs (as best as I could find), outputs realistic power for this engine.
I highly recommend you try this version out.

1. 220HP and 606 lb-ft

The next three versions are made-up and never really existed.
These are here for people who like the way the engine sounds
but don't want to give up the power they are used to.

2. 440 HP and 1,220 lb-ft.

3. 600 HP and 1,650 lb-ft.

4. 750 HP and 2,050 lb-ft.



Driving Habits
So because of the lack of turbo, the NH-220's peak torque and horsepower are at
a pretty high RPM, but the power band is also quite wide. It makes peak torque from
about 1300rpm all the way up to about 1700rpm, and max horsepower at the redline: 2100rpm. 

Operating range will mostly be about 1400 - 1850rpm on level roads, but if you've got
extra weight or are on a steep grade you'll want to add about 250 RPM to both of those numbers.
This is very different from most engines in this game where you rarely exceed 1500. Basically,
you're going to want to rev the snot out of this engine 

This engine used to come in trucks that had two transmissions for 16 total gears.
My recommendation is that you do take a 10, 13, or 18 speed. Don't take something
with fewer gears unless you're using one of the higher horsepower versions.
Your horsepower curve really favors the top end, so you need something with enough
gears that you aren't dropping to 1000rpm after a shift.


Supported Trucks

Vanilla:
- Kenworth T680
- Kenworth W900
- Peterbilt 389
- Peterbilt 579

Modded:
- Ford F150 Raptor 2017
- Freightliner Argosy
- Freightliner Cascadia 2018
- Freightliner Columbia
- Freightliner Classic XL
- Freightliner Coronado
- Freightliner FLB
- Freightliner FLD
- International 9800
- International 9900
- Kenworth 521
- Kenworth K200 (RTA)
- Kenworth Needle Nose
- Kenworth T610 (GTM)
- Kenworth T800 (GTM)
- Kenworth T800 2016 (ModSaver)
- Kenworth W900A
- Kenworth W900B (GTM)
- Kenworth W900L "Big Bob Edition"
- KRAZ 64431 AZOV
- Mack B61
- Mack R Series (Harven)
- Mack RS700l
- Mack Rubber Duck
- Mack Superliner
- Mack Titan
- Mack Ultraliner
- Peterbilt 281
- Peterbilt 357
- Peterbilt 359
- Peterbilt 389 (Viper2)
- Peterbilt 567 (GTM)
- Scot A2HD
- Ural Next
- Volvo VNL670 (Aradeth)
- Volvo VNR
- Western Star 4900


New Changelog:
2018-08-13
- Automatic Transmission Tuning - Should improve the weird behavior with an 18 speed.

2018-08-02
- Added support for the 2017 F150 Raptor
- Added support for the Freightliner Columbia
- Added support for the International 9900
- Added support for the Kenworth T800 2016 (ModSaver)
- Added support for the Kenworth W900A
- Added support for the Kenworth W900L "Big Bob Edition"
- Added support for the KRAZ 64431 AZOV
- Added support for the Mack R Series by Harven
- Added support for the Mack Titan
- Added support for the Ural Next
- Added support for the Volvo VNR

2018-07-27
- Added support for the Mack Ultraliner
- Added a "burst" sound when you step on the accelerator at lower RPMs
- Overhauled the exterior sounds (Cleaner loops and sounds more like the interior does now)

2018-07-24
- Added support for Peterbilt 281
- Added support for Mack B61

2018-07-09
- Added support for the Peterbilt 359
- Added support for the Kenworth 521
- Added support for the Kenworth Needle Nose
- Added support for the Mack Superliner

2018-07-07
- Added support for the Scot A2HD truck

2018-07-05 (2nd Update)
- Better support for "Adaptive Automatic Transmission". The shift points should range
from 1850-2100 rpm depending on your load and driving style 
- Adjusted the torque levels on the 440HP version so it actually produces 440 HP (not 600)
- Added a 600HP version which makes 1,650 lb-ft of torque
- Added a 750HP version which makes 2,050 lb-ft of torque
- Added power curve graphs for each engine option to the mod's images
- Rebalanced engine prices to be more in line with alternatives (They got cheaper)
- Raised exterior volume again

2018-07-05
- Using "overrides" for sounds on all trucks again instead of defaults.
- Automatic Transmission Tuning to keep the revs up in the power band

2018-07-04
- Raised exterior volume
- Viper2's 389 requires overrides instead of defaults as well.

2018-07-03
- Raised interior volume
- Switched to "defaults" instead of "overrides" wherever possible


Credits:
1. Most of the exterior sounds and the inspiration for this engine mod in the first place
Kenworth - Pride of the Osborne Trucking Fleet

2. Most of the interior sounds come from this video: https://www.youtube.com/watch?v=AQoKzOyj1M0 
220 Cummins backdrop manifold with straight pipe in a 1962 freightliner cabover

3. I borrowed a few sounds from Kriechbaum's N14c engine mod - specifically one of the "no fuel"
sounds which I blended with one of my own, and the Jake Brake sound, because I haven't been
able to find a good clean recording of a jake form an NH-220.
The N14c is in the same engine family, just about 40 years later.

Cummins NH-220 Engine for Ats Cummins NH-220 Engine for Ats



How to install mods?

- Download the mod from our server or from external links;

- Extract it with Winrar or Winzip program;

- Copy files with extension .scs file(s) into your My Documents/American Truck Simulator/mod folder;

- Run game ~> Edit profile ~> Enable mod.

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