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In March of this year, General Motors released a new generation of Ecotec engine family in Detroit. The engine family consists of 11 small-displacement engines with displacements ranging from 1.0L to 1.5L. Future GM's many hot-selling small cars and compact SUVs will use these small-displacement engines, including the new generation of Chevrolet Cruze launched in the Chinese market.
Also in March, Porsche CEO Mullen claimed that its Boxster and Cayman models will use four-cylinder engines, and the powertrains of these two models are currently all six-cylinder engines; Ford's Chinese joint venture Changan Ford also ushered in the EcoBoost engine. The smallest member of the family - the official off-line of the 1.0-liter EcoBoost engine.
Volvo Motors announced a high-profile announcement of its Drive-E powertrain series at the end of February. The distinctive feature of this powertrain is miniaturization. Volvo’s top-level remarks that “four-cylinder power does not lose six cylinders†also imply that the future will Use more four-cylinder engines.
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The world's major car companies have "reduced cylinders", indicating that the era of engine miniaturization has begun.
Energy conservation standard upgrade small engines a timely <br> <br> In fact, engine downsizing is not a new topic, as early as around 2008, GM and Ford and other car firms on the proposed small engine development strategy. With the advent of national governments on the assessment of automotive energy-saving emission reduction time, the trend of engine miniaturization becomes more apparent.
In January of this year, China officially issued the “Consumer Vehicle Fuel Consumption Limits†and “Passenger Vehicle Fuel Consumption Evaluation Methods and Indicators†to solicit public opinions, pointing out that the fourth phase of the standard continues to use vehicle models that are grouped by the vehicle's entire vehicle conditioning quality. Consumption evaluation system, while improving the technical characteristics and requirements of special structural vehicles, and further tightening the fuel consumption limit of passenger vehicles. This is an important policy refinement and strong advancement after the State Council proposed in 2012 that the average fuel consumption of new vehicles in 2015 and 2020 would reach 6.9L and 5.0 litres per 100 kilometers.
In February, the European Parliament set a world’s most stringent automotive carbon emission control target: by 2020, the average carbon dioxide emissions of 95% of new cars sold within the European Union must reach no more than 95 grams per kilometre (about 100 3.8 liters). By 2021, all new cars sold in the European Union must meet the above emission requirements. If automakers are unable to meet the above criteria, vehicles that exceed the carbon emission standards will be punished by a penalty of 95 euros (US$130.60) per gram per kilometre per vehicle in the European Union. In addition, the U.S. market also proposed to meet the target of 6.6 liters and 4.3 liters respectively in 2016 and 2020 respectively.
It is in this context that the world's major car companies have begun to speed up the deployment of small engines, the original use of high-emission engines in mid-to-high-class cars and SUVs and other large passenger cars also began to "thin" to reduce the new car Average fuel consumption.
Turbochargers boost the small engine market in the spring welcome <br> <br> can bring down the size of the engine fuel consumption, but consumer pain point is that the power efficiency of the engine is always small. Therefore, how to reduce the engine displacement while ensuring sufficient power has become the key to the success of small-sized engines to achieve market success, and the development of turbocharger technology has become a top priority.
Turbocharging boosts engine power by more than 30% by increasing intake efficiency, while fuel consumption values ​​remain at similar levels. This means that reducing the number of cylinders in the engine does not mean a loss of power. After using turbocharging technology, the original six-cylinder engine can be completely replaced by four cylinders.
Automotive turbocharged was first introduced by Honeywell in the United States in 1962. As of today, turbocharging technology has come half a century. Compared to its inception, this technology has also made a qualitative leap. For example, through the improvement of materials, the turbocharger can withstand higher temperatures, the service life is the same as the engine life; the improvement of the cooling cycle system can make the vehicle stall immediately without having to idle; in addition, the current turbocharger is in the state of low rotation speed. Can work, but also can completely match the start-stop system.
It is worth mentioning that the efforts of turbocharging to improve fuel economy have not stopped. According to Honeywell, the company has launched a new generation of products in about three years or so. The fuel consumption of new products has been improved by 2% to 3% through the upgrading of common technologies. Currently, the maximum fuel consumption can be increased by up to 5% through technological innovations. 10%.
However, with the progressive miniaturization of the on-board engine, achieving high torque at low speeds is still a challenge for turbocharging. At present, some companies are trying to use VNT technology, which is mostly used in diesel engines, on gasoline engines. However, this technology is currently relatively expensive. In response, Honeywell introduced DualBoost technology. The axial turbines are matched with back-to-back two-sided compressors to further reduce the time required for reaching the required torque, and provide even better rapid response and steady-state performance.
With the tightening of energy resources and tightened emission reduction policies in various countries, the degree of focus on turbocharging has gradually increased. In Western Europe, almost 70% of new cars are equipped with turbo. Although the application status of turbochargers in the Chinese market is not optimistic, the current proportion of new vehicle sales is only 22%. However, in recent years, the acceptance of turbochargers has shown a clear upward trend. A consumer-oriented survey from Xinhuaxin found that of the nearly 50,000 respondents who participated in the survey, nearly 80% of the respondents said they understand turbocharged engines, and 60% of those who have a car purchase plan. Will consider buying a turbo car. This is related to the continuous maturation of turbocharging technology and the gradual reduction of costs after large-scale application.
With the trend of miniaturization of the engine, more and more car companies have started to adopt turbocharger technology. In addition to multinational companies, local auto companies such as Brilliance, Great Wall and Chery are also accelerating the application of turbocharger technology. This means that, whether in the high-end, terminal or low-end markets, turbocharger technology gradually penetrates into major market segments, and engine miniaturization may be faster than expected.
