Low Mass and High Efficiency (LMHE) Medium-Duty Truck Engine
Category: Mechanical/Materials
Developers: General Motors
Co-Developers: Oak Ridge National Laboratory
Product Description:General Motors and its collaborators (ORNL, OSU, MTU, ECK, SwRI, Northfield, WBC, ICC, and CWC) have developed and validated a new, high-value, low-mass and high-efficiency medium-duty V8 truck engine with a combination of cost-effective combustion, materials and manufacturing technologies. The combustion features of twin-spark plugs, ultra-high pressure direct injection, active charge motion control, high pressure-cooled exhaust gas recirculation, split cooling with valve bridge drilling have generated 606 Nm (446 lb-ft) torque at 4000RPM and 280kW (375hp) power at 5000RPM. Lightweight high-temperature cast aluminum ACMZ (AlCuMnZr) and high-Q (AlSiCuMg) alloys and AM AlCeNiMnZr alloy offer mechanical performance at elevated temperatures for cylinder head, engine block and pistons. High strength and high modulus cast steel and nodular iron alloys enable quality casting of high-performance lightweight hollow crankshafts and ADI camshafts. New casting and additive manufacturing (AM) processes provide opportunities to produce low-mass and high-quality head, block, piston, crank, camshaft and exhaust manifold with minimum lead time and cost. An integrated computational materials engineering (ICME) approach helped optimize product design and manufacturing processes.
Developers: General Motors
Co-Developers: Oak Ridge National Laboratory
Product Description:General Motors and its collaborators (ORNL, OSU, MTU, ECK, SwRI, Northfield, WBC, ICC, and CWC) have developed and validated a new, high-value, low-mass and high-efficiency medium-duty V8 truck engine with a combination of cost-effective combustion, materials and manufacturing technologies. The combustion features of twin-spark plugs, ultra-high pressure direct injection, active charge motion control, high pressure-cooled exhaust gas recirculation, split cooling with valve bridge drilling have generated 606 Nm (446 lb-ft) torque at 4000RPM and 280kW (375hp) power at 5000RPM. Lightweight high-temperature cast aluminum ACMZ (AlCuMnZr) and high-Q (AlSiCuMg) alloys and AM AlCeNiMnZr alloy offer mechanical performance at elevated temperatures for cylinder head, engine block and pistons. High strength and high modulus cast steel and nodular iron alloys enable quality casting of high-performance lightweight hollow crankshafts and ADI camshafts. New casting and additive manufacturing (AM) processes provide opportunities to produce low-mass and high-quality head, block, piston, crank, camshaft and exhaust manifold with minimum lead time and cost. An integrated computational materials engineering (ICME) approach helped optimize product design and manufacturing processes.
