Despite the stringent emission requirements, engineers and technicians did not give up. Dr. Rolf Leonhard, head of Bosch's research and development department for diesel engine systems, believes that Bosch is actively preparing for such stringent emission requirements and is providing appropriate solutions at the right time. They mainly adopted measures to optimize the combustion technology of diesel engines: Figure 1 In the red zone: Euro VI emission standards specify a narrow "observation hole" for particulate matter and NOx 1. In the case of partial load conditions, high supercharging pressure composes a very high utilization rate of AGR exhaust gas; 2. High diesel injection pressure is still used under partial load conditions; 3, flexible fuel injection process, 8 fuel injections during a work process. The success of engineering technicians Bosch's engineers and technicians have successfully achieved the established objectives: In the mass production of vehicles, all vehicles with Bosch diesel injection technology have significantly reduced NOx emissions and particulate emissions under various load conditions. The very high supercharging pressure and diesel injection pressure, multiple injections during a working process, and AGR exhaust gas recycling and reuse are among the core features of the Bosch Diesel Engine Optimized Combustion Method (HCCI, Homogeneous Charge Compression Ignition). The particulates and NOx emitted by the diesel engine have been greatly reduced in diesel engines. The premise of realizing HCCI combustion is the correct gas mixture and the oil gas mixture that is evenly mixed in the combustion chamber. Therefore, a full-variable injection system is indispensable, which can ensure the pre-injection, main injection and supplementation of diesel at different times in a working process. injection. At present, automotive engines that meet Euro V emission standards have been successfully developed, and this was difficult to accomplish several years ago. From 2009 onwards, we will be able to use DPF (diesel particle filter) to successfully control particulate emissions within the 0.003 g/km limit. The Euro VI emission standard, which is expected to be implemented in 2014, imposes stricter regulations on the emission of harmful substances from the engine, and in particular, the requirements for NOx emissions are nearly harsh. At that time, the engine's NOx emissions were only allowed to be 80μg/km, which is only 1/3 of the current standard, and the demand for engine particulate emissions was not changed much.
Drying equipment is a crucial component in many industries, including food processing, pharmaceuticals, and chemical manufacturing. These machines are designed to remove moisture from materials and products, which can help to increase their shelf life, improve their quality, and reduce their weight.
There are many different types of drying equipment available on the market today, each with its own unique set of features and benefits. Some of the most common types include air dryers, rotary dryers, fluidized bed dryers, and freeze dryers.
Air dryers are the simplest and most affordable type of drying equipment. They work by blowing hot air over the surface of the material or product being dried, which causes the moisture to evaporate. Rotary dryers are similar to air dryers, but they use a rotating drum to agitate the material and improve the drying process.
Fluidized bed dryers are a more advanced type of drying equipment that use a bed of hot air to suspend and dry the material being processed. This allows for faster and more efficient drying, as well as improved product quality.
Freeze dryers are a specialized type of drying equipment that are used primarily in the pharmaceutical industry. They work by freezing the material being dried and then removing the moisture through a process called sublimation.
Regardless of the type of drying equipment used, it is important to choose a machine that is well-suited to the specific needs of your industry and application. Factors to consider when selecting a drying machine include the type and volume of material being processed, the required level of moisture removal, and the available space and resources for installation and operation.
Overall, drying equipment is an essential tool for many industries, and can help to improve product quality, reduce waste, and increase efficiency. With so many different types of machines available on the market today, it is important to carefully evaluate your options and choose a machine that will meet your specific needs and requirements.
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