Mazda Will Launch In 2018 A Gasoline Engine Based On Diesel Engine Operating Principles
|   Thursday, February 06, 2014
Mazda is already working on the second generation SKYACTIV-G gasoline powered engines that promise to revolutionize this type of engines. The new engines are expected to debut in 2018 and could have an atypically high compression ratio of 18.0:1, while the current SKYACTIV-G engine has a ratio of 14.0:1.

For comparison, most modern engines that are used for cars today have a compression ratio located between 10.0:1 and 12.0:1. As though the high compression ratio of these engines was not impressive enough of a feature, Mazda will apply a different solution for igniting the fuel mixture: compression, a method reserved in terms of technology for diesel fueled engines, at least until now.
Changing the functioning of the engine will only operate at partial loads and possibly at idling speed.

Mazda's technical solution, in short, HCCI, and has been tested by manufacturers such as Mercedes-Benz, Hyundai / Kia and General Motors. This acronym mentioned above means Homogenous Charge Compression Ignition. Practically, it means that this technology will use the heat and pressure in the combustion chamber to ignite the fuel, all without normally needing the spark used by gasoline powered engines known in the technical literature as "SIE", meaning spark ignition engines.

Those from Mazda say that their new technical solution is more efficient than small displacement turbocharged engines. This type of propeller is almost 30 percent more economical thanks to the new technological approach, or at least that is what internal tests performed indicated.

HCCI technology allows compression ratios between 16:1 and 18:1 and will work with as little as possible fuel without suffering the detonation, pre-ignition or other irregularities in the operation of the engine, and friction losses will be reduced by up to 20 percent. The harmful emissions of Nox, that are various nitrogen oxides, will be reduced dramatically, as will the pumping losses.

HCCI will be the driving force behind Mazda's plans to reduce fuel consumption on internal combustion engines, as opposed to other carmakers going down the path of downsized turbo engines.

"We decided not to follow the downsizing approach because our SKYACTIV engines will be competitive without that," stated Mazda's product strategy division general manager, Hidetoshi Kudo.

In total, all the changes implemented will reduce the fuel consumption by 30 percent compared to the current SKYACTIV-G engine. The main challenge of the new technologies is presented by the transition from the compression ignition to the spark ignition, because the diesel engine operating mode is incompatible with high engine speeds and changing the type of ignition is difficult to achieve in a uniform manner.

The third generation of SKYACTIV-G engine, prepared after the launch of the units scheduled for 2018, will implement adiabatic combustion chamber. This involves a process that takes place without transfer of heat or matter between the system and the environment. The challenges that technology faces is similar to that of SKYACTIV-G II, including heat loss management, and a question of yield also valid for the current internal combustion engines.
Comments:
Name required * Email required Email not valid *
Comment required *

Latest news
Sunday, August 19, 2018 10:30:31 Nissan is present at the Detroit Auto Show with a compact concept SUV called...
Saturday, August 18, 2018 10:25:17 Another Hyundai premiere at the Detroit Auto Show is the new Veloster N,...
Friday, August 17, 2018 10:20:24 The South Koreans from Kia presented at the Auto Show in Detroit the new...
Thursday, August 16, 2018 10:15:59 After a massive promotion campaign, the US subdivision of Hyundai has officially...
Wednesday, August 15, 2018 10:05:55 Acura boasted that the new RDX is 100% made in the United States and is...
Tuesday, August 14, 2018 09:54:10 At the core of the new VW Jetta is the MQB platform, which is already used...
Tuesday, August 14, 2018 09:50:38 General Motors held the world premiere for the new generation Chevrolet...
Monday, August 13, 2018 09:45:39 The Ram Trucks brand, currently belonging to Fiat Chrysler Automobiles,...
Sunday, August 12, 2018 09:39:52 Ford brought the new generation mid-size Ranger pick-up at the Detroit Auto...
Saturday, August 11, 2018 09:34:13 At the Auto Show in Detroit, American car manufacturer Ford celebrates the...