General Motors recently announced its plan to reduce carbon dioxide emissions by 2025.
At the recent 2017 SAE High Efficiency IC Engine Symposium in Detroit, executives from both GM and Ford discussed the importance of using technology developments for engine efficiency and long-term carbon dioxide emissions goals (via Green Car Congress).
David Brooks, director for General Motors Global Propulsion Systems R&D, said GM is focusing on several initiatives related to gasoline engines, including:
Continued aggressive downsizing. Key enablers are advanced boost systems and increased knock tolerance — meaning more knock-resistant fuels.
Compression rations between 13 and 14 to maximize work extraction. Key enablers are active valve actuation and increased knock tolerance.
Higher levels of dilution to enable EGR lean combustion at low temperatures. An enabler is more reactive fuels.
At the same time, Thomas McCarthy, chief engineer for powertrain research and advanced engineering at Ford, stressed the need to assess the impact of future fuel and powertrain options, especially in its quest for an 80% reduction in GHGs by 2050.
Reducing carbon dioxide emissions and improving engine efficiency are not the only environmentally friendly initiatives of the car companies. Last month, GM announced it has diverted 99.7% of its office assets from landfills by partnering with companies to repurpose and recycle tens of thousands of pieces of office furniture and equipment. Ford recently announced that water-saving technologies implemented at its Chicago assembly plant has reduced water usage by 13 million gallons, a number that is expected to climb drastically.