When the new Chevrolet Colorado midsize pickup rolls out in the Asia-Pacific region this fall, it will introduce a new global family of Duramax turbo-diesel engines, available in 2.8L and 2.5L displacements. (The Colorado made its global debut in Thailand today.)
The 2.8L turbo-diesel is rated at 180 horsepower (132 kW) and 346 lb-ft of torque (470 N·m) with an available six-speed automatic transmission. The 2.5L is rated at 150 horsepower (110 kW) and 258 lb-ft of torque (350 N·m). The 2.8L turbo-diesel features a variable-geometry turbocharger for optimal power and efficiency across the rpm band and a balance shaft for greater smoothness.
Engineered for the wide range of global markets and their respective driving conditions and fuel specifications, the new diesels are designed to deliver economical performance. Features such as hydraulic valve lash adjusters reduce maintenance costs by eliminating the need for periodic adjustments, while quick-start glow plugs promote fast engine starting in cold climates.
Additional highlights include:
- Iron cylinder block and aluminum DOHC cylinder head
- Proven common rail fuel system
- Electronic throttle valve that helps reduce emissions
- Cooled exhaust gas recirculation for enhanced performance and lower emissions
- Laminated steel oil pan with upper aluminum section that balances engine rigidity and quietness.
The engines meet Brazil’s emissions requirements without the need for a particulate filter, which helps reduce the Colorado’s production cost.
A modular design of the basic architecture enables easier transition between versions and reduces production costs. The 2.8L and 2.5L use the same cylinder block and cylinder head and share many other components.
Engine production started in September in Thailand.
The Colorado range is the product of a five-year, $2-billion vehicle program developed across five continents for customers in more than 60 markets around the world.