{"id":6062,"date":"2025-04-18T15:56:18","date_gmt":"2025-04-18T06:56:18","guid":{"rendered":"https:\/\/katuhito.info\/?p=6062"},"modified":"2025-04-18T16:02:26","modified_gmt":"2025-04-18T07:02:26","slug":"commonrale001_en","status":"publish","type":"post","link":"https:\/\/katuhito.info\/en\/commonrale001_en\/","title":{"rendered":"Common rail high pressure fuel injection system"},"content":{"rendered":"\n

Common rail high pressure fuel injection system<\/strong><\/h3>\n

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Diesel engines often use lean combustion with excess air compared to gasoline engines, resulting in very low CO and HC emissions, but high NOx and PM (particulate matter) emissions. To address these issues, it is necessary to improve the combustion state and shorten the combustion time, and it is effective to increase the fuel injection pressure to promote fuel atomization. As a solution to this problem, fuel supply systems using high-pressure fuel injection devices have become mainstream.<\/div>\n

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A common rail high pressure fuel injection system is a type of fuel supply system for diesel engines that uses a common rail (piping) that stores fuel at high pressure and injects it into each cylinder of the engine. In this system, the fuel is first compressed by a high pressure pump and then sent to each injection nozzle while maintaining a constant high pressure in the common rail. The use of a common rail makes it possible to precisely control the injection pressure, injection timing, and injection amount according to the engine’s operating conditions.<\/div>\n

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This precise fuel injection control improves combustion efficiency, reduces emissions and optimizes engine performance. It reduces emissions such as NOx and PM, improving fuel economy and increasing power while complying with environmental regulations. Common rail high pressure fuel injection systems are widely used in modern diesel engines due to their flexibility and efficiency.<\/div>\n

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