Green Car Congress

NOVEMBER 27, 2013

Based on on-road measurements in their study, a team from the University of California Berkeley has estimated that, as of 2010, light-duty (LD) gasoline vehicles were responsible for 85% of CO; 18% of NO x ; 18% of organic aerosol (OA); and 6% of black carbon (BC) emissions from on-road motor vehicles in the United States.

Gasoline 239

Gasoline Emissions Diesel San Francisco 239

Green Car Congress

APRIL 9, 2014

Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit. liter gasoline direct injection engine. With D-EGR, one or more cylinders have their exhaust connected directly to the intake system.

Gasoline 317

Gasoline Emissions Diesel Exhaust 317

Green Car Congress

NOVEMBER 26, 2013

Results of a study led by a team from the National Renewable Energy Laboratory on the impact of butanol-gasoline blends on light-duty vehicle emissions suggest that widespread deployment of n-butanol or i-butanol in the gasoline pool could result in changes to the estimated emissions of alcohols and carbonyls in the emissions inventory.

Gasoline 236

Gasoline Alcohol Blend Light Emissions 236

Green Car Congress

APRIL 9, 2021

The ORNL team conducted engine experiments with both 91 RON E10 gasoline and liquified petroleum gas (LPG). 1) with cooled exhaust gas recirculation (EGR) and high compression ratio (13.3:1 1 for LPG only) improved engine efficiency by up to 30% compared with a production turbocharged gasoline direct injection spark ignition engine.

Diesel 468

Diesel Engine Gasoline Fuel 468

Green Car Congress

FEBRUARY 9, 2012

Their SOFC system can be operated without consuming the anode fuel (a reductant) at temperatures near that of the engine exhaust to eliminate the need for reductant refilling and extra heating. The NO x concentration in the exhaust of an automotive gasoline engine with spark ignition can be as high as 4000 ppm.

Exhaust 225

Exhaust Engine Emissions Gas-Electric 225

Green Car Congress

MARCH 18, 2013

The effects of gasoline ratio on indicated thermal efficiency of HCII and GDBF modes. Researchers at Tsinghua University have compared the combustion and emissions characteristics of two dual-fuel (diesel-gasoline) modes intended to integrate the advantages of both fuels to achieve high thermal efficiency and low emission targets.

Gasoline 281

Gasoline Diesel Emissions Fuel 281

Green Car Congress

APRIL 12, 2013

At SAE World Congress next week in Detroit, Delphi Automotive will present two technical papers describing its ongoing progress with the Gasoline Direct-Injection Compression-Ignition (GDCI) engine concept. 2013) Boost System Development for Gasoline Direct- Injection Compression-Ignition (GDCI). Source: Sellnau et al. Earlier post.).

Gasoline 312

Gasoline Engine Concept Fuel Economy 312

Green Car Congress

AUGUST 17, 2012

Under laboratory-simulated diesel exhaust conditions, this mixed-phase oxide material was superior to Pt in terms of cost, thermal durability, and catalytic activity for NO oxidation. Diesel engines are attractive because of their higher fuel efficiency than gasoline engines. Graham, Burtron H. Science 337 (6096), 832-835. 1225091.

Exhaust 240

Exhaust Diesel Dallas Conversion 240

Green Car Congress

FEBRUARY 20, 2011

Of the four-stroke vehicles, a subset also has functioning backup gasoline fuel systems.) When the four-stroke auto-rickshaws were separated into “new” and “old” groups and their emissions compared by fuel type, no significant difference was observed for any exhaust constituents except for NO x from the gasoline-fueled vehicles.

Gasoline 287

Gasoline Emissions Fuel India 287

Green Car Congress

APRIL 10, 2014

Toyota Motor Corporation has developed a new series of fuel-efficient gasoline engines that achieve improved thermal efficiency. liter gasoline engine in which Toyota is employing the Atkinson cycle—normally used in dedicated hybrid engines—and a compression ratio of 13.5:1. Click to enlarge. One of the engines is a 1.3-liter

Gasoline 273

Gasoline Toyota Engine Fuel 273

Green Car Congress

AUGUST 19, 2012

Dennis Assanis at the University of Michigan suggests that accessing the “thermodynamic sweet spot” in high-efficiency, dilute, boosted gasoline engines has the potential for vehicle fuel economy gains between 23% and 58%. Assanis (2012) Thermodynamic sweet spot for high-efficiency, dilute, boosted gasoline engines. Martz and Dennis N.

Fuel Economy 236

Fuel Economy Gasoline Economy Engine 236

Green Car Congress

MARCH 5, 2018

Under this same operating condition with stoichiometric engine exhaust (and no reforming), they could only sustain stable combustion with EGR under 25%. D-EGR uses fuel-rich combustion in one cylinder and recirculates its exhaust to the intake system, generating brake thermal efficiency as high as 42.5% —Jim Szybist, ORNL.

Engine 274

Engine Gasoline Fuel Exhaust 274

Green Car Congress

OCTOBER 15, 2010

Professor Stan Golunski, Deputy Director of the newly established Cardiff Catalysis Institute , in collaboration with engineers at Brunel and Birmingham Universities, is investigating the feasibility of an on-board exhaust gas reforming system to improve combustion and recover waste heat. Resources. Energy Environ. doi: 10.1016/j.cej.2007.12.028.

Exhaust 186

Exhaust Waste Gas 2006 186

Green Car Congress

OCTOBER 23, 2012

Contribution of gasoline and diesel exhaust to SOA over 0% to 50% diesel fuel use. The study determined that, depending on a region’s fuel use, diesel exhaust is responsible for 65% to 90% of vehicular-derived SOA, with substantial contributions from aromatic and aliphatic hydrocarbons. Gentner et al. Click to enlarge.

Diesel 281

Diesel Los Angeles Exhaust Gasoline 281

Green Car Congress

FEBRUARY 22, 2018

The researchers assessed the gaseous, particulate, and genotoxic pollutants from two current technology gasoline direct injection vehicles when tested in their original configuration and with a catalyzed gasoline particulate filter (GPF). Their study is publishedin the ACS journal Environmental Science & Technology.

Gasoline 253

Gasoline Emissions Engine Fuel Economy 253

Green Car Congress

SEPTEMBER 13, 2021

Researchers from Tampere University and the University of Eastern Finland have found that the particulate emissions of auxiliary heaters can be up to a thousand times higher than the particulate emissions of idling gasoline vehicles. Their open-access study is published in the journal Atmosphere. doi: 10.3390/atmos12091105.

Gasoline 221

Gasoline Engine Finland Exhaust 221

Green Car Congress

JANUARY 31, 2014

(Left) Thermal efficiency and ( right ) soot from different gasoline-butanol blends at different EGR rates. A study by a team at Tianjin University found that the addition of n-butanol to gasoline for use in a compression ignition engine (CI) under Low Temperature Combustion (LTC) conditions has a significant effect on soot reduction.

Gasoline 210

Gasoline Engine Exhaust Fuel 210

Green Car Congress

JULY 14, 2017

A new study by an international team led by researchers from the Paul Scherrer Institute (PSI) in Switzerland has found that modern diesel passenger cars equipped with diesel particulate filters (DPFs) emit fewer carbonaceous particulates than gasoline-powered vehicles. The open-access study is published in the journal Scientific Reports.

Gasoline 218

Gasoline Diesel Cars Emissions 218

Green Car Congress

MARCH 14, 2012

Fuel injection timing is the dominant factor affecting particle number (PN) emissions from gasoline direct injection (GDI) engines, with the major factor causing high PN emissions being fuel liquid impingement on the piston bowl, according to a new study by a team from the US National Renewable Energy Laboratory (NREL). Earlier post.).

Engine 210

Engine Gasoline Emissions Exhaust 210

Green Car Congress

JULY 21, 2023

A new study by researchers from Washington State University and SLAC National Accelerator Laboratory has found that a catalyst using a single or just a few palladium atoms removed 90% of unburned methane from natural gas engine exhaust at low temperatures. The work is published in the journal Nature Catalysis.

Exhaust 195

Exhaust Engine Gas Carbon 195

Green Car Congress

JUNE 8, 2023

There are widespread policy assumptions that the phase-out of gasoline and diesel internal combustion engines will over time lead to much reduced emissions of Volatile Organic Compounds (VOCs) from road transport and related fuels. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g.,

Emissions 397

Emissions Exhaust Cars Ozone 397

Green Car Congress

DECEMBER 5, 2009

At the tailpipe, the TWC ultimately reduced the regulated and unregulated emissions from the methanol-gasoline engine to the same levels as those generated by a conventional gasoline engine. A paper on their study was published online 3 December in the ACS journal Energy & Fuels. —Fan et al.

Gasoline 218

Gasoline Emissions Alternative Fuels Engine 218

Green Car Congress

AUGUST 19, 2009

Gasoline and hydrogen rails and injectors installed on the intake manifolds. Changwei Ji and Shuofeng Wang modified a 4-cylinder (SI) engine to permit hydrogen and gasoline to be injected into the intake ports simultaneously to realize a hybrid hydrogen-gasoline engine (HHGE). Credit: ACS. Click to enlarge.

Gasoline 218

Gasoline Hydrogen Emissions Engine 218

Green Car Congress

MARCH 20, 2013

A team from Brunel University, MAHLE Powertrain and University College London studied the combined effects of different inlet valve operating strategies on combustion, performance and emissions with different ethanol and 1-butanol blends with gasoline in a single-cylinder spark-ignition research engine equipped with a fully variable valvetrain.

Gasoline 225

Gasoline Exhaust Downsizing Engine 225

Green Car Congress

MAY 4, 2012

Engineers at Transonic Combustion, a start-up developing a fuel efficient supercritical (SC) fuel injection and combustion system—Transonic Combustion, or TSCi ( earlier post )—have demonstrated the TSCi process using gasoline fuel at low load without EGR, medium load with EGR, and high speed low load with EGR.

Fuel Economy 262

Fuel Economy Gasoline MPG Economy 262

Green Car Congress

MARCH 5, 2012

V8 engine that seamlessly transitions between CNG and gasoline fuel systems. With both CNG and gasoline tanks full, the trucks offer a range of more than 650 miles. The Vortec engine features hardened exhaust valves and hardened intake and exhaust valve seats. The vehicles feature a CNG-capable Vortec 6.0L

Sierra 291

Sierra Silverado GMC Chevrolet 291

Green Car Congress

MAY 25, 2010

Fuel-cycle SO 2 emissions of EVs compared to those of gasoline ICEVs and HEVs in China, current (left) and future (right). The study examined the fuel-cycle CO 2 , SO 2 , and NO x emissions of EVs in China in both current (2008) and future (2030) periods and compared them with those of conventional gasoline vehicles and gasoline hybrids.

Coal 291

Coal Gasoline-Electric Gasoline Pollution 291

Green Car Congress

NOVEMBER 6, 2014

In a newly published SAE paper, a team from Ford, General Motors and AVL argues that the exclusive use of a match blending approach to prepare ethanol-gasoline blends for regulatory emissions testing “has fundamental flaws”. 2014) “Issues with T50 and T90 as Match Criteria for Ethanol-Gasoline Blends,” SAE Int. Earlier post.).

Gasoline 210

Gasoline GM Ford Emissions 210

Green Car Congress

JULY 12, 2013

Researchers at Environment Canada have found that vehicle exhaust is a significant source of isocyanic acid (HNCO), a toxic gaseous acid that is a product of various forms of combustion and a potential health concern. Automobile exhaust is also a known source of inorganic acids such as nitric (HNO 3 ) and nitrous (HONO) acids.

Exhaust 207

Exhaust Canada Environment Emissions 207

Green Car Congress

AUGUST 8, 2017

As part of the new technology to achieve this vision, the company disclosed plans to introduce a next-generation gasoline engine called SKYACTIV-X in 2019. This new proprietary combustion engine combines the advantages of gasoline and diesel engines to optimize environmental performance, power and acceleration performance. Yamasaki, Y.,

Mazda 186

Mazda Gasoline Fuel Economy Gasoline-Electric 186

Green Car Congress

FEBRUARY 10, 2014

Operating range of 2-stroke CAI fueled with gasoline, E10 and E85. Accordingly, the processes have been extensively researched over the last decade and adopted on prototype gasoline engines (e.g., To minimize the air short-circuiting rate, the intake and exhaust valve timings were adjusted. Zhang et al. 2013a) Click to enlarge.

Gasoline 186

Gasoline Engine Exhaust Fuel 186

Green Car Congress

NOVEMBER 17, 2009

Theta II GDI, its first Gasoline Direct Injection engine before an audience of engineers attending the Ninth Annual Hyundai-Kia International Powertrain Conference in Korea. GDI application will subsequently be expanded across the gasoline engine family and applied to other Hyundai models. Theta II GDI. Click to enlarge.

Gasoline 210

Gasoline Hyundai Engine Production 210

Green Car Congress

SEPTEMBER 26, 2012

Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. This is due to raw, externally premixed fresh charge comprising air, fuel and lube oil being short-circuited into the exhaust during the scavenging process. Oh and Plante. Click to enlarge. g/kWh with a 3.3%

Engine 329

Engine Emissions Fleet Market 329

Green Car Congress

NOVEMBER 17, 2013

liter EcoBoost gasoline turbocharged direct injection (GTDI) four-cylinder unit. Featuring a twin-scroll turbocharger and a three-port integrated exhaust manifold (IEM), the 2.3-liter Two pivotal factors are the three-port integrated exhaust manifold cylinder head and a twin-scroll turbocharger. —Pete Pandolfi, 2.3-liter

Louisville 286

Louisville Fuel Economy Exhaust Future 286

Green Car Congress

JUNE 12, 2023

A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. Resources Tianbo Tang, Cavan McCaffery, Tianyi Ma, Peng Hao, Thomas D. Durbin, Kent C. 2023.128836.

California 305

California Emissions Montana Gasoline 305

Green Car Congress

APRIL 20, 2010

compacts under 1,400 kg in weight—a stoichiometric 3-cylinder turbocharged gasoline direct injection (GDI) engine offers an optimal combination of cost, lower emissions and reductions in fuel consumption, according to an analysis by Delphi Powertrain presented at the recent SAE 2010 World Congress. Source: Kirwan et al. Click to enlarge.

Gasoline 231

Gasoline Downsizing Engine CO2 231

Green Car Congress

MAY 2, 2014

A new study by Dr. Gautam Kalghatgi and his colleagues at Saudi Aramco provides further support a pathway for significant improvements in the efficiency of a gasoline engine (i.e., Broadly, this approach is termed Gasoline Compression Ignition (GCI). spark ignited, SI) by running it in compression ignition mode with naphtha fuels.

Gasoline 210

Gasoline Fuel Light Diesel 210