Researchers developing free-piston linear generator for exhaust waste heat recovery

Green Car Congress

Researchers in China have developed a novel free-piston linear generator (FPLG) to recover exhaust waste heat efficiently from a vehicle engine. the internal combustion engine is the power system of most vehicles. Therefore, it is necessary to recover exhaust energy of vehicle engine, and many strategies and methods have been adopted to reduce the energy waste and improve the fuel utilization efficiency.

2017 174

ElectraTherm and Navy to demonstrate shipboard waste heat recovery

Green Car Congress

ElectraTherm, a leader in distributed, waste heat to power generation, is working with the Office of Naval Research (ONR), Creare, and the US Naval Academy (USNA) to demonstrate gas turbine waste heat recovery as part of a Small Business Innovation Research project. The demonstration will take place at the USNA in Annapolis, Maryland to prove the potential for waste heat recovery onboard ships. Ports and Marine Waste Heat Recovery

2018 170
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ORNL Researchers Find Thermochemical Exhaust Heat Recuperation In Internal Combustion Engines Could Provide Substantial Boosts in Second-Law Efficiency

Green Car Congress

When reforming is not used, the fuel and exhaust pass through CV2 unchanged. Thermochemical exhaust heat recuperation (TCR) in an internal combustion engine could result in substantial boosts in second-law efficiency (as measured in terms of single-stage work output from an ideal IC engine) for a range of fuels, according to a new study by researchers at Oak Ridge National Laboratory (ORNL). Tags: Concept Engines Engines Fuels Waste Heat Recovery

2010 212

The importance of considering non-exhaust traffic emissions; the role of EVs

Green Car Congress

the criteria pollutants and CO 2 that emerge with the exhaust from the tailpipe. However, there is more than 15 years of research showing that the contribution of non-exhaust primary particles to the total traffic generated primary particles is significant in urban areas. Non-exhaust PM factors include tire wear, brake wear, road surface wear and resuspension of road dust. Non-exhaust emissions require active regulation. Air Waste Manag.

2016 235

Electric-car frunks: Bonus space or wasted opportunity?

Green Car Reports

Without the hulking internal combustion engine, the big multi-speed, multi-clutch transmission under the hood, exhaust system, the fuel tank and fuel pumps, and all the ancillary pieces, an EV can feel far more spacious on the inside than an

2020 143

Manchester team proposing graphene-based ballistic rectifier for waste heat recovery

Green Car Congress

Researchers at the University of Manchester (UK) have developed a graphene-based nano-rectifier (“ballistic rectifier”) that can convert waste heat to electricity. The built-in electric field or a threshold voltage in these devices requires an applied bias high enough to overcome the internal field and generate a significant current flow. The resulting technology can also be applied to harvesting wasted heat energy in power plants.

2016 174

Not Just Turbocharging: Exhaust Gases Can Generate Electricity, Too

Green Car Reports

The exhaust gases shooting out the tailpipes of internal-combustion cars aren''t just a form of pollution, they also represent wasted energy. One way to use some of that energy has been turbocharging: An exhaust-driven turbine runs a compressor that packs more air into the combustion chambers, allowing more gasoline to be injected, thus producing

2014 105

Simulation study suggests ORC waste heat recovery system could deliver potential 7% improvement in fuel consumption in a PHEV on highway

Green Car Congress

A simple Organic Rankine Cycle (ORC) waste heat recovery system could recover up to 10% of engine waste heat under highway driving conditions, corresponding to a potential 7% improvement in fuel consumption in a light-duty plug-in hybrid electric vehicle (PHEV), with low penalization of the added weight to the vehicle electric range, according to a simulation study by researchers from the University of Stuttgart and the Ohio State University. Exhaust gas exergy map of EcoCAR engine.

2012 256

New ORNL non-precious metal catalyst shows promise as low-cost component for low-temperature exhaust aftertreatment

Green Car Congress

Researchers at Oak Ridge National Laboratory (ORNL) have developed a ternary mixed oxide catalyst composed of copper oxide, cobalt oxide, and ceria (dubbed “CCC”) that outperforms synthesized and commercial platinum group metal (PGM) catalysts for CO oxidation in simulated exhaust streams while showing no signs of inhibition—i.e., PGM catalysts are the current standard for emissions aftertreatment in automotive exhaust streams.

2015 184

First reference installation of Opcon Waste Heat Recovery technology for ships; potential for 5–10% fuel savings

Green Car Congress

Opcon, in collaboration with Wallenius Marine, recently completed the first reference installation of its Waste Heat Recovery technology for ocean-going vessels in a project supported by the Swedish Energy Agency. The Opcon systems generate electricity from low-value waste heat in the vessel’s steam and cooling system. This is a milestone in our efforts to adapt our pioneering technology for production of electricity from waste heat for use in marine applications.

2012 248

Fraunhofer developing process to ferment steel exhaust gases to fuels and chemicals

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Fraunhofer researchers in Germany have developed a process for the conversion of CO-rich exhaust gases from steel plants into fuels and specialty chemicals. The technology came about during one of Fraunhofer’s internal preliminary research projects and through individual projects with industrial partners. In addition to the exhaust gases, syngas—similar gas mixtures from home and industrial waste incineration—can also be used for the engineered process.

2015 179

Borla Performance Industries developing muffler/membrane unit for exhaust water extraction with ORNL nanopore membrane technology

Green Car Congress

Borla Performance Industries , a leader in the design and manufacture of stainless steel performance exhaust, has an option to license a novel nanopore membrane technology developed at Oak Ridge National Laboratory (ORNL). Borla will combine this with its diesel exhaust technology to create a low-cost, novel system that doubles as a device to extract potable water from diesel and other internal combustion exhaust.

Water 210

Total and Waste Management invest in waste plastic to synthetic crude startup Agilyx

Green Car Congress

Agilyx Corporation, a startup commercializing a waste plastic to synthetic crude oil technology, has closed a $22 million Series B round led by Kleiner Perkins Caufield & Byers (KPCB), and joined by new strategic investors, Waste Management, Inc. and Total Energy Ventures International, an affiliate of oil and gas company, Total SA.

2011 200

Enogia and IFPEN partner on waste heat recovery in stationary and transport applications

Green Car Congress

The aim is to recover waste heat from the exhaust gases of internal combustion engines in both stationary installations (generators, cogeneration installations) and transport, particularly rail and maritime. Created in 2009, Enogia specializes in ORC (Organic Rankine Cycle) systems converting waste heat into electricity. Recovering heat from exhaust gases will cut fuel consumption by 5 to 10%.

2014 205

Researchers Develop More Efficient Thermocells for Low-Grade Waste Heat Recovery

Green Car Congress

An international team of researchers from the US, India and Australia has demonstrated thermo-electrochemical cells (thermocells) in practical configurations (from coin cells to cells that can be wrapped around exhaust pipes), that harvest low-grade thermal energy (temperature below 130 °C), using relatively inexpensive carbon multiwalled nanotube (MWNT) electrodes. Baughman (2010) Harvesting Waste Thermal Energy Using a Carbon-Nanotube-Based Thermo-Electrochemical Cell.

Waste 199

NSF and DOE Issue Solicitation for Automotive Thermoelectric Waste Heat Recovery Projects; Up to $9M in Total Funding Over 3 Years

Green Car Congress

Six key elements of a thermoelectric waste heat recovery module for vehicle applications. The Directorate for Engineering at the National Science Foundation in partnership with the US Department of Energy Vehicle Technologies Program has issued a solicitation for proposals for thermoelectric waste heat recovery devices for automotive applications. Automotive thermoelectric waste heat recovery. Tags: Thermoelectrics Waste Heat Recovery

2010 170

BMW Study on Rankine Cycle for Waste Heat Recovery Shows Potential Additional 10% Power Output at Highway Speeds

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In this study, BMW focused on Rankine A (exhaust gas only) and Rankine B (exhaust gas and coolant). BMW is exploring two pathways for waste heat recovery in vehicles: one thermoelectric, the other thermodynamic. In 2005, BMW Group Research and Engineering announced it was developing a steam-powered auxiliary drive—the Turbosteamer—to use the waste heat present in the exhaust gases and cooling system from a conventional gasoline engine as its source of power.

2009 150

Cyclone Power Technologies Completes Testing, Ships Initial Rankine-Cycle Waste Heat Power Generator

Green Car Congress

Cyclone Power Technologies has completed internal testing of its initial waste heat power generator ( earlier post ) and has shipped the beta unit to its customer, Bent Glass Design. Cyclone’s waste heat power generator—comprising its 18 hp Waste Heat Engine, proprietary heat exchangers and electric generator—will be installed and field tested at Bent Glass’ facility over the following couple of months.

2010 170

GMZ Energy successfully demonstrates 1 kW thermoelectric generator for Bradley Fighting Vehicle

Green Car Congress

GMZ Energy, a market leader in the development of high-temperature thermoelectric generation (TEG) solutions, has successfully demonstrated a 1,000W TEG designed for diesel engine exhaust heat recapture in a Bradley Fighting Vehicle. The company integrated five of its 200W TEGs into a single 1,000 W diesel engine solution that directly converts exhaust waste heat into electrical energy to increase fuel efficiency and lower costs.

2014 256

Proterra beats out BYD for Mineta San José International Airport electric bus contract; 10 Proterra electric buses to be in service by late 2018

Green Car Congress

Mineta San José International Airport (SJC). Since the Proterra electric buses have no combustion engine, riders will enjoy a quieter, smoother, exhaust-free ride. These include recycling and composting programs supporting a zero-waste commitment by 2022; a 1MW, 3.4-acre solar array powering the airport’s rental car garage; and a shift to airside electric service vehicles reducing emissions from operations.

2017 150

Sorption Energy Seeking to Commercialize Waste Heat-Driven Adsorption Heat Pump Technology for Vehicle Air Conditioning

Green Car Congress

A spinout from Warwick University (UK), Sorption Energy , is commercializing vehicle air conditioning systems based on waste heat-driven adsorption heat pump technology developed by Professor Robert Critoph and his team at University of Warwick School of Engineering. While driven with waste heat from the engine coolant water (at 90 °C), a pair of the current prototype generators (loaded with about 1 kg carbon in each of two beds) has produced an average cooling power of 1.6

2010 185

GMZ Energy announces new, high-power thermoelectric module: TG16-1.0

Green Car Congress

In June, GMZ reported the successful demonstration of a TEG designed for automotive waste heat recapture and built with the TG8 modules. Internal Resistance (Ω). The small size, high power output and reliability of this device make it suited for local, high reliability power generation from waste and primary heat sources. The TG16’s lower thermal resistance maintains the hot-side temperature of the module below 600°C even with a high-temperature exhaust stream present.

2014 240

Renault Trucks’ Optifuel Lab 2 lab vehicle integrates technologies for more efficient big rigs; road test results coming in 2015

Green Car Congress

The idea is to take as little energy as possible from the internal combustion engine. We then multiplied the sources of electrical energy for power units by adding solar panels and installing an exhaust gas heat energy recovery system based on the Rankine cycle. By giving priority to its “free” sources such as solar energy or exhaust gas heat, Optifuel Lab 2 limits use of energy produced by the combustion engine’s alternator, thereby reducing fuel consumption by the same amount.

2014 210

Study suggests that decarbonizing US transport sector by converting waste CO2 to fuels would require economical air-capture of CO2

Green Car Congress

Kreutz used two examples of CCTF systems in his analysis: biodiesel from microalgae and Sandia National Laboratory’s S2P process (an effort to utilize concentrated solar energy to convert waste CO 2 into synthetic fuels, earlier post ). Kreutz presented the paper at the 10 th International Conference on Greenhouse Gas Control Technologies ( GHGT-10 ) earlier this fall in The Netherlands.

2010 200

Ricardo advancing with two novel heavy-duty vehicle technologies: cryogenic split-cycle engine and microwave fuel reforming

Green Car Congress

The recuperated engine uses isothermal compression via cryogenic injection to enable significant exhaust to compressed gas heat transfer. Ricardo is advancing its work with two novel technologies to improve the efficiency of heavy-duty goods vehicles: a cryogenic split-cycle engine “ CryoPower ” ( earlier post ), and a low-carbon waste-heat powered microwave fuel reformer “ HeatWave II ”. Recuperator to transfer heat from exhaust gas to compressed air.

2013 212

BMW Outlines Intelligent Heat Management Applications for Reducing Fuel Consumption and CO2; New Thermoelectric Generator Unit Integrated with EGR

Green Car Congress

Among the projects discussed were reducing cold starts; using waste heat for different heating applications in the car; and a new implementation of a thermoelectric generator (TEG) for waste heat recovery. The remaining two-thirds are lost as waste heat going into the environment through the car’s exhaust emissions and through the radiator. Heating with waste heat. Thermoelectric Generator (TEG) integrated in the exhaust gas recirculation.

2009 191

BMW’s “CO2 Champion” Performance Concept is a Plug-in Diesel Hybrid; 50 km/31 mile All-Electric Range; Thermo-electric Generator for Waste Heat Recovery

Green Car Congress

A water-cooled Thermo-Electrical Generator (TEG) is integrated in the exhaust system of BMW Vision EfficientDynamics, serving to convert a lot of the thermal energy contained in the exhaust emissions into electric power. The pipes and manifolds in the exhaust system are designed in this case to maintain the full power and all the characteristics typical of the combustion engine also when using this generator system.

2009 225

Toyota begins trial operation of hybrid power generation system: SOFCs plus micro turbines

Green Car Congress

The trial operations will utilize the system as an internal power generation facility, with the aim of testing and evaluating the system’s energy efficiency, performance, and durability. In addition, it has a cogeneration system (combined heat and power) that uses the waste heat produced in power generation. The waste fuel is burned in the micro gas turbines, and electricity is generated as it rotates. The electricity and waste heat generated is used within Motomachi Plant.

2017 150

TU München researchers test behavior of OME synthetic fuels in engines, develop optimized combustion process

Green Car Congress

Scientists from TUM’s Chair of Internal Combustion Engines are involved in the project, along with DENSO Automotive Germany, IAV and Ford Research and Innovation Center. Furthermore, since the synthetic fuel does not produce soot, large amounts of exhaust gas can be recirculated into the engine without contaminating the intake. This approach inhibits the formation of nitrogen oxides because the recirculated exhaust gas prevents very high temperatures during combustion.

2018 174

Ricardo investigating potential for its split-cycle engine in large engine market

Green Car Congress

The new cycle combines both Diesel and Ericsson Cycles into an integrated process to recover waste heat within a single thermodynamic cycle. Key changes to implement the integrated cycle are isothermal compression and heat addition from the exhaust gas to the charge air after the end of compression. To transfer exhaust gas heat at the end of compression requires the use of a “split cycle” in which the standard four-stroke sequence is split into two separate elements.

2016 183

BMW looks into intelligent heat management

Green Cars News

BMW discussed the idea during its recent Innovation Days 2009 event and looked at projects including reducing cold starts; using waste heat for different heating applications; and the implementation of a thermoelectric generator for waste heat recovery. Currently even a highly efficient combustion engine will only convert around one third of the energy in the fuel into traction to propel the car, while the remaining two thirds are lost as waste heat going into the environment.

2009 34

Eaton contributing several components to DOE SuperTruck II program

Green Car Congress

These include a high-efficiency transmission that achieves additional fuel savings by enabling engine-off coasting and waste heat recovery; a 48-volt mild hybrid electrically regenerative accessory drive that charges the vehicle’s batteries, efficiently runs the air conditioner and other accessories, and replaces the alternator in linehaul commercial vehicles; and precise exhaust gas recirculation controllers that enable simultaneous fuel and emissions reductions.

2019 179

Mercedes-AMG 2L, turbo four-cylinder pushes out up to 421 hp, 500 Nm

Green Car Congress

This means that the turbocharger and the exhaust manifold are now positioned at the rear, on the side of the firewall when viewed from behind. Furthermore, the new arrangement allows much improved air ducting with shorter distances and fewer diversions - both on the intake and exhaust side. Together with the likewise divided ducts in the exhaust manifold, this makes it possible to feed the exhaust flow to the turbine separately. Larger exhaust valves.

2019 231

Estonian PPP GoSwift wins global Transport Award for smart border crossing point service; traffic queue management

Green Car Congress

An innovative solution for managing traffic queues at international borders is the winner of the 2015 Transport Achievement Award offered by the International Transport Forum at the OECD. The environment has benefitted both locally in terms of less waste, reduced noise and fewer exhaust fumes, as well as globally through less CO 2 emissions from idling vehicles.

2015 185

Hyundai Adds a Twin-Scroll Turbo to Sonata

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at the New York International Auto Show. Twin-scroll turbocharger designs have two exhaust gas inlets divided by split walls inside the turbine housing, with both gas passages controlled by a waste-gate. A twin-scroll turbo recovers even more energy from the exhaust than a single-scroll turbocharger thanks to a divided manifold. With more valve overlap, the scavenging effect of the exhaust flow can literally draw more air in on the intake side.

2010 179

MAHLE developing portfolio of solutions for fuel cell drives in commercial vehicles

Green Car Congress

In the flat membrane humidifier, the exhaust and supply air are in cross flow and separated from the membranes. The specifications often require separation of water, gases, and water vapor downstream of the fuel cell—for esthetic reasons, no fluid water should escape from the exhaust air duct. Exhaust pathway. The result of this holistic systems approach is the plastic exhaust air pathway optimized by MAHLE for fuel cell vehicles.

2018 195

Ricardo forms company to commercialize cryogenic split-cycle engine: CryoPower

Green Car Congress

The Ricardo CryoPower split-cycle engine concept redefines the processes of internal combustion to enable significantly improved internal thermal efficiency in comparison with today’s state-of-the-art engines. CryoPower is based on the use of a separate induction and compression cylinder from that used for combustion and exhaust. This enables recovery of otherwise wasted exhaust heat to the working gas after the end of compression.

2018 183

New ACE researchers propose new diesel combustion concept; pathway to >50% BTE without WHR

Green Car Congress

A team at Japan’s New ACE Institute—an industry-funded research initiative founded to develop a new diesel combustion concept—has developed a new diffusion-combustion-based concept with multiple fuel injectors to overcome the trade-offs of thermal efficiency with energy loss and exhaust emissions typical of conventional diesel engines. A paper on their concept is also published in SAE International Journal of Engines.

2016 174

Dearman Engine signs MOU with Hubbard Products for integration of liquid air engine TRU; report details liquid air benefits

Green Car Congress

Ambient or low grade waste heat is used as an energy source with the cryogen providing both the working fluid and heat sink. When ambient or low grade waste heat is reintroduced to liquid air it boils and turns back into a gas, expanding 710 times in volume. It also exhausts lots of cold, making it highly relevant for processes which require power and cooling. A heat hybrid would convert waste heat from the ICE into extra shaft power through the Dearman engine.

2014 191

Renault presents new hybrid power unit for F1 in 2014

Green Car Congress

It uses two motor generator units (MGUs): an MGU-H for waste heat energy recovery and an MGU-K for kinetic energy recovery during braking. Acting as a generator, it absorbs power from the turbine shaft to recover heat energy from the exhaust gases. The MGU-K is connected to the crankshaft of the internal combustion engine and is capable of recovering or providing power, limited to 120 kW (160 bhp) by the rules.

2013 253

Liquid Air Energy Network forms in UK; focus on transportation and energy storage

Green Car Congress

A new new forum for the advocacy and development of liquid air as an alternative technology to harness waste and surplus energy within power and transport—the Liquid Air Energy Network (LAEN)—has formed in the UK. The main potential applications are in electricity storage, transport and the recovery of waste heat. Sources of low-grade waste heat include power stations to factories to vehicle engines. High efficiency internal combustion engine.

2013 225

Mercedes-AMG HPP awarded Dewar Trophy for PU106A Hybrid F1 Power Unit

Green Car Congress

In other words, of the energy available in a gallon of gasoline, a third is lost as waste heat, another third disappears out of the exhaust with only the remaining third available for useful work. So instead you focus on areas such as the waste energy in the exhaust flow from the Internal Combustion Engine (ICE), where you can put in a turbine to recover some of that energy, use it to drive the compressor and improve the efficiency of the ICE.

2014 225

Cadillac launches new V-6 family; 3.0L Twin Turbo w/ cylinder deactivation and stop/start for CT6

Green Car Congress

Twin Turbo V-6 that will power the upcoming, top-of-the-range CT6 luxury performance sedan, premiering at the New York International Auto Show. This new, parallel-flow design maximizes heat extraction in the area of the upper deck, intake and exhaust valve bridges in the heads and integrated exhaust manifold with a minimal amount of coolant. An integrated exhaust manifold rounds out the head’s features, saving weight over a conventional, separate head/manifold assembly.

2015 205