After the development of carburetor, single-point EFI, multi-point EFI and multi-point sequential EFI, many luxury car manufacturers have made progress in the field of direct injection.

　　The direct injection engine is different from the ordinary engine in the fuel injection mode. The fuel is injected into the cylinder directly instead of being mixed with air in the intake manifold. With the accurate calculation of the ECU control unit of the engine, this combustion mode can control the fuel injection amount according to the working conditions of the engine, and the performance, fuel consumption and emissions of the engine can be optimized accordingly.

　　The earliest direct injection system was invented by Bosch Company in 1950s, and was first applied to Mercedes-Benz SL300 in 1955. However, it was gradually forgotten because there was no mainstream development trend at that time. It was not until 1996 that the direct injection gasoline engine reappeared in the market. Mitsubishi Corporation of Japan introduced their GDI direct injection technology into Galant’s 4G93 engine and sold it in the Japanese market. Subsequently, Mitsubishi Carisma equipped with this technology also entered the European market, and today’s "direct injection fever" developed from this.

　　Facing the problems of energy and environment and the development of engines, Volkswagen, Mercedes-Benz, BMW and Cadillac have invested a lot of manpower and material resources to explore new technical fields. In the domestic market, Volkswagen and Audi’s FSI technology has become a star product in this category, but with the arrival of Cadillac’s new CTS, BMW X6xDrive50i and other models, Volkswagen FSI engines have ushered in more competitors. At present, the mainstream models with direct injection technology in the domestic market are only some high-end models, but we have reason to believe that with the development of technology, this technology beneficial to you, me, energy and the environment will be gradually popularized.

New CTS and its SIDI direct injection engine

　　Universal SIDI

　　SIDI all-aluminum dual-mode intelligent direct injection engine adopts universal third-generation direct injection technology. Among them, dual mode refers to homogeneous combustion and stratified combustion. SIDI engine can automatically adopt stratified lean combustion mode when the throttle is half open and automatically enter homogeneous combustion mode when the throttle is full. The automatic conversion of these two modes will directly improve the effective utilization rate of fuel. The method used by general SIDI to realize layering is also different from the eddy current method of Volkswagen, and the controllable oiling process is the key step to realize layering oiling.

　　Representative model: Cadillac CTS3.6L flagship high-performance version

　　Cadillac CTS3.6L flagship high-performance version is equipped with this 3.6LSIDI engine. Compared with the previous generation CTS3.6L engine, the maximum power and torque of this SIDI engine have increased by 15% and 8%, reaching 229kW and 374N·m respectively. Due to the introduction of direct injection technology, the fuel consumption of this engine is also reduced by 3% compared with the previous generation engine, and the hydrocarbon emission is also reduced by 25% during cold start.

　　Volkswagen FSI

Volkswagen FSI has a high reputation in China.

The nozzle of FSI is below the intake pipe, and the nozzle placement of each pair is different.

　　Volkswagen was one of the first manufacturers to introduce direct injection technology into China. Nowadays, FSI (Fuel Ratio Injection) has become a familiar word for consumers. FSI refers to stratified fuel injection, which is a direct injection technology for gasoline engines. At the beginning of FSI, this technology had stratified lean combustion, but it was later cancelled for various reasons, and only the direct injection technology was retained. Audi used vortex effect to realize stratified lean combustion before. Although this technology was cancelled, the remaining direct injection technology also performed well in terms of power and fuel economy. Compared with the traditional engine that directly injects fuel into the intake manifold, the FSI fuel direct injection engine can significantly improve the power, make the output torque and power higher, and reduce the fuel consumption rate by 15%.

　　Representative model: Audi A6L3.2FSI

Audi A6L 3.2 has not only quattro four-wheel drive technology, but also FSI.

　　At present, compared with the previous 3.0LV6 engine, the 3.2LFSIV6 engine equipped on the Audi A6 model has a maximum power of 26kW and a maximum torque of 30N·m and 330N·m, and the fuel efficiency has also been significantly improved. It is a highlight of FSI technology to combine engine power and fuel economy well.

　　Bmw HPI

From this picture, we can clearly see the direct injection technology structure of BMW.

　　Many people don’t know about BMW’s high-precision injection system, HighPrecisionInjection. In fact, it is an integral part of BMW’s EfficientDynamics system and an important part of BMW’s improvement in power and fuel economy. The precise piezoelectric nozzle located between the intake valve and the spark plug can provide a pressure of up to 200Bar to fully atomize gasoline and complete the process of injecting it into the combustion chamber in 0.14 milliseconds, so that the fuel economy pursued by engineers is completely guaranteed. BMW does not add stratified combustion technology to this system, but achieves the purpose of improving fuel consumption rate through fuel atomization.

　　Representative model: BMW X6xDrive50i

BMW X6 xDrive 35i has entered China, and X6 xDrive 50i will meet domestic consumers soon.

　　The X6xDrive50i, which is about to enter the domestic market, is equipped with this direct injection system, and its power performance is also very remarkable because of its dual turbocharging system. Its maximum power is 300kW, its maximum torque is 600N·m, and its comprehensive fuel consumption is 12.5L/100km (it is worth noting that this is the data of a 4.4LV8 twin-turbo engine).

　　Mercedes CGI

The highlight of Mercedes-Benz CGI lies in its high-pressure piezoelectric nozzle technology.

　　Compared with Volkswagen and BMW, Mercedes-Benz’s publicity in this respect is somewhat low-key, but this does not mean that this German company is inferior to its competitors in this respect. Mercedes-Benz has been committed to the research on vehicle power and fuel economy, and CGI (Hierarchical-Charged Line Injection) is their research achievement. In 2006, Mercedes-Benz launched the 350CGI engine, which was the first time to apply the piezoelectric nozzle to the direct injection technology of gasoline engines. Compared with the popular mode of using vortex to produce stratified effect, Mercedes-Benz solves this problem well by using high-pressure piezoelectric nozzle, and forms the required stratified combustion mode by using the spray generated by high pressure. It is also for this reason that this engine effectively reduces fuel consumption by as much as 10% compared with the previous engine.

　　Representative model: Mercedes-Benz CLS350CGI

At present, it seems that Mercedes-Benz CLS 350 CGI has little fate with domestic consumers.

　　The maximum power of ordinary Mercedes-Benz CLS350 is only 200kW, the maximum torque is 350N·m, and the fuel consumption per 100 kilometers is 10.1L. Mercedes-Benz CLS350CGI has reached the maximum power of 215kW and the maximum torque of 365N·m, and the fuel consumption per 100 kilometers is 9.1L That is to say, after adding CGI technology, the maximum power, maximum torque and fuel consumption rate of the engine have improved by 7.5%, 4.3% and 10% respectively. Therefore, it can be seen that Mercedes-Benz is not inferior in this respect. After the successful appearance of CLS350CGI in 2006, Mercedes-Benz applied this engine to E-CLASS, S-CLASS and other models, but these models have not yet met with domestic consumers.

"Running Man" ("Running Man" for short) was undoubtedly a shining star in the Chinese variety scene. From its first broadcast in 2014 to becoming a source of laughter after countless families’ dinners, "Running Man" has allowed audiences to witness a series of exciting, funny and touching moments. However, recently, another veteran member announced his withdrawal, causing countless fans to sigh. The joining of White Deer and Fan Chengcheng failed to prevent the star’s gradual decline. Is "Running Man" really reaching a bottleneck period?

1. The members withdrew again, causing the fate of the show to rise sharply

It is reported that the announcement of the retirement this time is one of the old members of "Running Man", whose humor and enthusiasm have greatly enhanced the show. The news quickly spread on social media and caused a huge response. Viewers expressed their disappointment and reluctance: "I feel that something is missing from the departure of the old member," one loyal viewer wrote on Weibo. Many people worry that such a change will leave the show with a lack of chemistry and a less natural atmosphere than in the past.

2. The show goes from peak to gradual cooling: there are obvious traces of personnel changes

The success of "Running Man" is no accident. Its core charm lies in the interaction and tacit understanding among the members. However, over time, the original members gradually withdrew and were replaced by fresh faces. However, these new members, although unique, have never been able to completely replace the old members in the hearts of the audience. Fan Chengcheng and Bailu are undoubtedly powerful entertainers, and they also contributed many highlights in the show, but overall, the show seems to have lost its original purity and joy.

3. The charm of old members: the reluctance of the audience

The veteran, who has announced his retirement, has become a classic in the hearts of audiences over the years of "Running Man." Every time he appears, he always provokes a burst of laughter and applause. His unique sense of humor and affinity make him a "seagogue needle" in the show. Audiences have deep feelings for these familiar faces, so when they leave, it is not just a blow to the show, but a test of audience emotions.

4. Bailu and Fan Chengcheng: Fresh blood is not enough to save established shows

The production team of "Running Man" had hoped to inspire new vitality by introducing young idols such as Bai Lu and Fan Chengcheng. Bai Lu won the love of many fans with his bright personality and solid acting skills; Fan Chengcheng’s addition also added a lot of freshness and excitement to the show. However, it turns out that relying solely on the personal charm of the new members is not enough to fully make up for the vacancy caused by the departure of the old members. In the face of huge variety show market competition, such adjustments seem to be a drop in the bucket.

5. The talent turnover of variety shows: a hidden concern that cannot be ignored

The replacement of artists is the norm in the entertainment industry, but for a long-running variety show, the frequent change of core members is undoubtedly a huge challenge. On the one hand, new members need time to break in with the show, and on the other hand, the audience also needs time to accept and like these new faces. However, when the audience has become accustomed to the existence of old members, the addition of new members often brings discomfort and resistance, rather than expectation and joy.

6. Social media reverberations: Audience calls for authenticity

On social media, many viewers expressed concern about the current state of the show: "I hope the program team can plan the lineup of members more stably and in the long run, and do not treat the audience’s emotions as child’s play." Such voices reflect the audience’s appeal for the production idea of the show – hoping to maintain the original style and characteristics of the show, rather than changing frequently to meet the rapidly changing needs of the market.

7. The future of Running Man: How to regain lost luster

How to maintain the vitality of the show through the replacement of new and old members is a major challenge for the production team of "Running Man". Perhaps through more careful planning and production, the new members can build a deep emotional bond with the old audience, which is the key to the resurgence of "Running Man". Variety shows need freshness, but more importantly, they need a stable core team to support their long-term development.

8. Implications for the entire variety show industry

The phenomenon of "Running Man" has also triggered deep reflection on the entire variety show industry. Will frequent member changes have a negative impact on the overall quality of the show? Does the high mobility of stars mean that the life cycle of variety shows will be shortened? These are all questions that need to be reflected and discussed by industry insiders.

9. Rise and Fall: The Reality of the Variety Show Life Cycle

Every variety show has its own life cycle, from the initial novelty and popularity to the gradual lackluster and fall back, which is an inevitable process. The key lies in how to continuously innovate and debug during this process to maintain the audience’s interest and attention. For "Running Man", how to regain the lost innocence and enthusiasm will be the key to whether it can continue to attract audiences in the future.

10. Conclusion: Audience expectations and future prospects

Although "Running Man" faces many challenges, we still hope that it can rediscover the happy time that once accompanied countless audiences through continuous adjustment and innovation. After all, a successful variety show is not only a stage for stars, but also the emotional sustenance of the audience. I hope that in the days to come, we can continue to see the infinite joy and surprises that "Running Man" brings to us on the screen.

In this case, viewers must be patient and continue to support their favorite shows and stars. Mindful production and audience engagement may be the key factors that will make "Running Man" work out of its predicament.

Responsible editor:

　　Recently, the General Manager’s Office of the Central Radio and Television General Station officially authorized Yangguang Media Group Co., Ltd. (hereinafter referred to as "Yangguang Media Group") to exclusively operate the broadcast frequency live stream of the General Station in the car networking system. This means that the existing radio frequencies owned, controlled and managed by the main station and the new radio frequencies in the future must be connected to the car-playing service (including live broadcast and delayed listening) through the "cloud listening" car system or through cooperation with Yangguang Media Group.

　　"Cloud Listening" is a new national 5G sound media platform launched by the Central Radio and Television General Station (hereinafter referred to as "the General Station") in March 2020. It is the only audio client under the General Station and bears the important mission of the strategic transformation and integration of the General Station’s broadcasting.

　　"Cloud Listening" began to lay out intelligent networked automobile business from the beginning of its launch, and jointly developed car networking products with mainstream automobile manufacturers and solution providers to meet the different listening needs of users in travel scenarios.

　　"Cloud Listening" leads the industry standard with high-quality content, and promotes the standardization of the mobile audio market. It continues to lay out multi-terminal and full-application scenarios such as mobile phones, cars, tablets and smart wearable devices, and provides users with high-quality sound products and services such as radio stations, audio books and audio programs.

　　This exclusive operation authorization will have a far-reaching impact on the standardized development of the intelligent networked automobile industry. In the future, only through the cooperation of "Yunting" or Yangguang Media Group can the live broadcast stream of the main station broadcast frequency be connected to the car networking system of the car brand and the after-loading car networking system developed by the after-loading product company, which is expected to end the situation that the radio station of the car networking system was used indiscriminately in the past and ensure the car owners to enjoy the rights and interests of safe and standardized content services.

　　In recent years, the main station has continuously increased its efforts in the protection and management of copyright assets, standardized the copyright market and communication order of the Internet audio-visual industry, and made full use of its own content copyright advantages to support the independent platform to become stronger and bigger. As early as 2019, the General Station issued the "Statement of the Central Radio and Television General Station on Strengthening the Protection of Copyright Assets", which clarified the copyright scope of the General Station, and said that it would strengthen the monitoring and maintenance of its copyright assets, take all effective measures according to law, and resolutely crack down on any infringement of the legitimate rights and interests of the copyright assets of the General Station.

　　The person in charge of "Yunting" said that the next step will be to continuously strengthen the platform construction, make full use of, develop and operate the audio content resources of the main station, organically combine copyright protection and operation, extend the audio content value of the main station, and enhance its influence, communication and market value. At the same time, it will give full play to the advantages of the new media platform of the main station with an open and integrated attitude, accelerate the cooperation process with car manufacturers and solution providers, promote the signing cooperation with radio stations all over the country, and provide high-quality broadcast live streaming and audio products and services for car companies and car owners.