2014 2.0L Turbo Diesel Cruze EPA Test Road Load (TRL) Values

[gone-ot]

Excerpted from the GM document, 'Application For Certification 2014 Model Year (2.0L Diesel Cruze),' that GM submitted to EPA (at 50 mph):

68°F ROADLOAD: F0=30.19, F1=0.5273, F2=0.01164, TRLHP=11.4
20°F ROADLOAD: F0=33.21, F1=0.5800, F2=0.01280, TRLHP=12.6

...also, EPA curb weight: 3,481 lbs; GM literature: 3,475 lbs.

[tjts1]

English translation?

[UFO]

It's heavier than I expected.

I found this propaganda on the engine:
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A lightweight aluminum cylinder head and aluminum intake manifold contribute to the engine’s comparatively low weight of 408 pounds (185 kg), helping the Cruze Clean Turbo Diesel deliver a balanced ride with outstanding handling characteristics. Additional highlights include:

Dual overhead camshafts with four valves per cylinder and maintenance-free hydraulic lifters with low-friction roller-finger followers
Quiet belt-driven cams/valvetrain with high-strength belt material and tensioner rated for 100,000 miles
High-strength aluminum pistons with reinforced top ring and integral combustion bowl design
Central direct injection, with the injector positioned in the middle of the cylinder, with the bowl in the piston serving as the combustion chamber. This enables a high 16.5:1 compression ratio that enhances power and combustion efficiency
Variable-swirl intake manifold design, which optimizes air charge mixture motion in the cylinders for a more-efficient combustion that enhances performance and reduces emissions
Common-rail fuel system with Piezo fuel injectors that create multiple injections per combustion for greater performance, combustion efficiency and quietness
Variable-nozzle turbocharger that broadens the engine’s torque curve, particularly at low rpm, and supports greater high-rpm horsepower. It is mounted close to the exhaust outlet of the engine for quicker “spool up” of the turbine and faster “light off” of the exhaust catalyst
Intercooling system produces a cooler, denser air charge for greater power
Piston oil jets that help reduce friction and optimize piston temperature for greater performance and efficiency
Turbocharger bearings are oil-lubricated and cooled via an oil cooler
Variable-displacement oil pump helps save fuel by optimizing the oil pressure, which reduces friction
Vacuum pump designed for lower engine friction
Ceramic glow plugs, which provide greater cold-start performance over conventional metal glow plugs (an engine oil heater is offered for cold climates)
B20 bio-diesel compatibility.
Quiet, smooth performance is enabled by a number of features on and around the engine. There are also sound-absorbing features added to the Cruze, specific to the diesel model, including a unique dash mat, hood blanket and more.

A precise exhaust gas recirculation control system features a high-capacity cooler and bypass feature that enable the engine to meet United States and Canada’s tough diesel emissions regulations. There is also an exhaust after-treatment system is similar to what is used on Chevrolet’s heavy-duty trucks and vans equipped with the Duramax diesel, including a diesel particulate filter and urea injection, that helps make the 2.0L the cleanest diesel passenger car engine ever from GM.
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If it can deal with B20, there is a good chance it can do B100. In my unsolicited opinion (yes, you get to read it again), the only "clean" diesel is B100.

[gone-ot]

Originally Posted by tjts1

English translation?

It takes 1.2 HP more to maintain 50 mph at 20°F air temp than it does to maintain 50 mph at 68°F air temp due to denser air and stiffer tires (rolling resistance).