Browse Topic: Combustion and combustion processes
One of the advantages of the internal combustion engine is that it can function with relatively simple intake air filtration. Provided that dust is kept out, air entering the engine can ensure that the necessary combustion process takes place. So, a relatively simple dust filter will do the job. By comparison, hydrogen fuel cells are far more sensitive to air quality. Other pollutants can affect both fuel-cell performance and the lifetime of the fuel-cell stack. At the recent IAA Transportation Show in Hanover, Germany, Donaldson Filtration Solutions displayed tailored solutions through its range of cathode air filters. These typically rely on multiple layers - including activated carbon, an acid and base layer, and a dust filter - to screen out sulphur dioxide, nitrogen oxides and ammonia, while allowing for customization to protect against butane, toluene and other unwanted compounds
Backed by a consortium of companies, Southwest Research Institute's demonstrator vehicle aims to prove the commercial viability of hydrogen engines for on-road trucks. For decades, the running joke around hydrogen being a viable fuel for commercial trucks has been that it's “ten years away from being ten years away.” Though hydrogen-fueled rigs operating at scale has long seemed like a pipe dream, shifting winds around the globe blowing towards decarbonization have finally pushed this technology to be ready for the road. With the demand for the development of new propulsion technologies rising, organizations such as the Southwest Research Institute (SwRI) have ramped up R&D efforts to make this tech commercially viable. SwRI is an independent provider of research services and can rapidly assemble teams to tackle problems. SwRI's main mission is to push the boundaries of science and technology to develop innovative solutions
Agriculture, industrial, mining, construction, freight transport and other major global economy sectors rely on vehicle power to thrive. “Internal combustion engines - those powered by gasoline, diesel, natural gas or propane - really are key to our current economy, and we see [the ICE] as a key part of our energy future,” Allen Schaeffer, executive director of the Engine Technology Forum, a U.S.-based educational organization, said during a September webinar. Hosted by the Engine Technology Forum, the “Taking Internal Combustion Engines to the Next Level” session focused on current and under-development innovations aimed at increasing engine efficiency and lowering emissions
ABSTRACT Cylinder Pressure Monitoring (AVL CYPRESS™) is a technology which provides closed-loop feedback to enable real-time control of combustion in a compression ignition engine. This makes it possible to adapt to the fuel ignition quality and energy density by adjusting the main injection quantity and the placement of the injection events. The engine control system can thus detect fuel quality and adapt the combustion phasing quickly and robustly – and without any prior knowledge of fuel properties. By using a cylinder pressure sensor(s), the engine controller will be able to map the development of the apparent rate of heat release (ARHR) and the mass fuel burn curve - which provides good thermal efficiency correlation. The cylinder pressure map detects the combustion event and the feedback controller adjusts the start of injection to maintain the combustion event at the desired crank position. The cylinder pressure sensor allows for accurate measurement of the power produced. By
ABSTRACT Cylinder Pressure Monitoring (AVL CYPRESS™) is a technology which provides closed-loop feedback to enable real-time control of combustion in a compression ignition engine. This makes it possible to adapt to the fuel ignition quality and energy density by adjusting the main injection quantity and the placement of the injection events. The engine control system can thus detect fuel quality and adapt the combustion phasing quickly and robustly – and without any prior knowledge of fuel properties. By using a cylinder pressure sensor(s), the engine controller will be able to map the development of the apparent rate of heat release (ARHR) and the mass fuel burn curve - which provides good thermal efficiency correlation. The cylinder pressure map detects the combustion event and the feedback controller adjusts the start of injection to maintain the combustion event at the desired crank position. The cylinder pressure sensor allows for accurate measurement of the power produced. By
ABSTRACT The US Army is seeking improvements in the fuel efficiency of their military vehicles.. They have initiated a number of R&D projects aimed at advancing the state-of-the-art of powertrain efficiency including demonstration in a laboratory environment. This effort will set a benchmark for the vehicle integrators, allowing them to improve future vehicle offerings. The SAIC, AVL, Badenoch, QinetiQ and Ker-Train Research team offered powertrain solutions from 7 Tons to 40 Tons that achieved the goal of 44% thermal efficiency and the stringent flexible fuel and emissions requirements. In each of these offerings the team was able to identify modifications to existing engines that allowed dramatic improvements in the thermal efficiency. These efficiency improvements were achieved through a combination of techniques, combustion cycle adjustments using in-cylinder pressure monitoring and precise control of fuel injector timing, and turbo-compounding. For the R&D project, the fuel
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