article thumbnail

455 hp 2014 Corvette Stingray to deliver EPA-estimated 29 mpg highway

Green Car Congress

The 2014 Corvette Stingray will deliver up to an EPA-estimated 17 mpg US (13.8 The LT1 delivers 460 hp (343 kW) with the available dual-mode exhaust. As one comparison, the Porsche 911 Carrera S delivers 400 hp, and an EPA-estimated 27 mpg highway from its 3.8L, horizontally opposed 6-cylinder engine plus 7-speed transmission.

MPG 239
article thumbnail

Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

Green Car Congress

The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. The particle number count under those conditions increased by more than an order of magnitude in comparison to DPF-out particle concentrations. Credit: ACS, Thiruvengadam et al. Click to enlarge.

Exhaust 218
article thumbnail

Hyundai introduces 2015 Sonata Eco with 1.6L Gamma turbo; 32 mpg combined

Green Car Congress

As a comparison, the baseline 2015 Sonata with 2.4-liter liter engine is EPA-rated at 29 mpg (8.1 million), uses an exhaust manifold integrated turbocharger with twin scroll, air-guided intercooler, direct fuel injection system and dual CVVT, while a bed plate and a serpentine auxiliary belt were adopted to enhance engine reliability.

MPG 239
article thumbnail

York, Empa study finds retrofitting of VW diesel engines was successful

Green Car Congress

On the opening day of the Frankfurt International Motor Show (IAA), the US Environmental Protection Agency (EPA) published a Notice of Violation: VW diesel engines with 1.6 Together with his colleagues, he used a special instrument to examine the exhaust plumes of 23,000 passing cars and analyzed the levels of NO x and CO 2.

Diesel 207
article thumbnail

Independent testing finds Navistars IC Bus has up to 4.5% advantage in fluid economy over competitive buses: fuel plus urea

Green Car Congress

Comparisons of type C buses have typically been centered on fuel economy. However, with different buses offering distinctive technologies to meet EPA 2010 emissions, fuel economy doesn’t tell the whole story. to conduct a head-to-head fluid economy comparison. fluid economy advantage using TMC Type IV testing methods.

Economy 199
article thumbnail

EPA Awards $2M to Small Businesses to Develop Sustainable Technologies; Includes Biofuel, Emissions Reduction Projects

Green Car Congress

The US Environmental Protection Agency (EPA) has awarded $2.38 emissions from small handheld tow-stroke engines have decreased in recent years as a result of EPA regulations on these engines. will have demonstrated the feasibility of a passive lean diesel exhaust after-treatment technology for nitrogen oxides abatement.

Emissions 225
article thumbnail

A closer look at the basics of Volkswagen Group’s important new 2.0L diesel MDB engine

Green Car Congress

liter diesel, prominently showing the closely attached exhaust aftertreatment system. For example, depending on the emission requirements, 3 different types of exhaust gas recirculation (EGR ) can be used: cooled high-pressure EGR without low-pressure EGR; cooled low-pressure EGR without high-pressure EGR; or. The exhaust side systems.

Diesel 384