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In Isuzu's five-cylinder engine, each piston plays a crucial role in the operation of the engine. The following are the effects of Isuzu engine pistons on the overall function of the engine:
1. Compression: The piston compresses the air-fuel mixture in the cylinder before ignition. This compression increases the pressure and temperature of the mixture, making it more flammable.
2. Combustion: The compressed air-fuel mixture is ignited by the Spark Plug, causing an explosion that pushes the piston downward with great force. This force is transmitted to the crankshaft, which translates it into rotational motion.
3. Exhaust: After the combustion process is completed, the piston moves the cylinder upward to discharge the exhaust gas through the Exhaust Valve.
4. Lubrication: The piston is designed to move smoothly up and down in the cylinder. To ensure this, it is coated with a layer of oil that helps reduce friction and wear.
5. Cooling: The piston is exposed to high temperatures during combustion, which can cause it to expand and jam. To prevent this, the piston is designed with cooling channels that allow the oil or coolant to flow through and dissipate heat.
China's first autonomy pH tester came out in Beijing
Launched by Beijing Changan (Group) Henderson Electronics Co., Ltd., the HYW-type upper gastrointestinal pH dynamic monitor, the first domestically developed device with independent intellectual property rights for diagnosing gastric and esophageal reflux disease, has been in use in Beijing for eight years. This innovative medical instrument represents a major breakthrough in China's domestic healthcare technology.
The device is designed to continuously measure the pH levels in both the stomach and esophagus over a 24-hour period. It uses analog-to-digital conversion to record and store data via a microprocessor, which is then analyzed and processed by a computer system. The system generates various statistical reports, histograms, and trend graphs, offering an objective and quantitative approach to long-term pH monitoring within the body. This advancement significantly enhances clinical diagnosis and provides more accurate insights into digestive health.
The instrument is particularly valuable in diagnosing complex conditions such as reflux-related respiratory diseases, non-cardiac chest pain, and throat disorders caused by gastroesophageal reflux. It serves as a crucial tool for both clinical diagnostics and research in pathology and physiology. Notably, it offers a reliable and objective basis for patients who experience symptoms of acid reflux but show normal esophageal mucosa under endoscopy.
Internationally, the device has gained recognition as the preferred method for diagnosing gastroesophageal reflux disease (GERD). It has successfully passed clinical trials at prestigious institutions such as the Third Affiliated Hospital of Peking University Medical College, Beijing Children’s Hospital, and Beijing Chaoyang Hospital. Experts from the Chinese Medical Association’s digestive diseases department have also evaluated the device, confirming its performance matches that of imported equipment. This achievement marks a significant step in closing the gap in domestic medical technology in this field.
A piston is a component of an internal combustion engine that moves back and forth in the cylinder. It is usually made of aluminum or cast iron and is responsible for transferring the force of the expanding gas produced during combustion to the Crankshaft.