直噴式發動機和電噴式發動機是目前工程機械設備中常用的兩種發動機類型。我們了解長臂挖掘機的使用也需要了解其發動機的知識，所以下面長臂挖掘機出租廠家帶您了解一下長臂挖掘機直噴式和電噴式發動機的區別。
Direct injection engine and electronic injection engine are two types of engines commonly used in construction machinery and equipment at present. We also need to know the engine knowledge to understand the use of the long-arm excavator, so the rental manufacturer of the long-arm excavator will take you to understand the difference between the direct-injection engine and the EFI engine of the long-arm excavator.
1、油門開度控制的不同
1. Different throttle opening control
直噴式發動機是由轉速控制，是人手操控油門開度旋鈕和人工選擇動力模式開關來控制油門的開度，整體構造比較簡單。
The direct-injection engine is controlled by the rotation speed. It is controlled by manually controlling the throttle opening knob and manually selecting the power mode switch. The overall structure is relatively simple.
電噴式發動機由控制器檢測出以下信號：油門開度旋轉角度、動力模式開關、發動機轉速、油泵壓力轉速、各個操作閥的先導操控油閥、挖掘機的工作模式，以及水溫、油溫等信號。然后，電腦ECU按照駕駛員的操作想法，根據不同的動力模式和工作方式，負載情況和操作情況來確定一個較佳的油門開度位置。同時，電腦ECU還能控制油門開度的變化速率，讓發動機能發揮出較佳的性能。
The controller of the EFI engine detects the following signals: throttle opening rotation angle, power mode switch, engine speed, oil pump pressure and speed, pilot operated oil valve of each operating valve, working mode of the excavator, water temperature, oil temperature and other signals. Then, according to the driver's operation idea, the computer ECU determines a better throttle opening position according to different power modes and working modes, load conditions and operation conditions. At the same time, the computer ECU can also control the change rate of the throttle opening, so that the engine can play a better performance.
2、噴油器開啟的不同
2. Different fuel injector opening
直噴式發動機工藝成熟，產品殘值率高（即直噴挖掘機用到結束時的價值），相對保值。
The direct injection engine technology is mature, and the product residual value rate is high (that is, the value at the end of the use of the direct injection excavator), which is relatively stable.

電噴式柴油發動機是在高壓油泵、壓力傳感器、電腦控制單元（ECU）組成的封閉環境中，把噴射壓力的產生和噴射過程完全分開供油的。
The EFI diesel engine completely separates the generation of injection pressure from the injection process in a closed environment composed of high-pressure oil pump, pressure sensor and computer control unit (ECU).
3、維修方面也不同
3. Maintenance is also different
從實際用戶體驗來看，直噴式柴油發動機的日常維修保養費用低，發動機工作時產生的扭矩較大，動力強勁。
From the actual user experience, the daily maintenance cost of the direct injection diesel engine is low, the torque generated by the engine is large and the power is strong.
電噴式柴油發動機能夠做到和液壓系統良好的匹配。
The EFI diesel engine can match the hydraulic system well.
4、方面的不同
4. Differences in energy conservation and environmental protection
直噴式發動機對油品的適應力強，但是燃油不能完全燃燒，用油量大，不。電噴式發動機對油品質量要求相對較高，燃油燃燒充分，節油。
The direct-injection engine has strong adaptability to oil, but the fuel can not be completely burned, the fuel consumption is large, and it is not environmentally friendly. EFI engines require relatively high oil quality, sufficient fuel combustion, fuel saving and environmental protection.
以上就是為大家介紹的有關加長臂挖掘機租賃詳細的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以的態度,為您提供服務http://www.thesonriseranchgallery.com/
The above is the detailed introduction about the lease of the extended-arm excavator introduced for you. I hope it can help you. If you have any questions, please contact us. We will provide services for you with our attitude http://www.thesonriseranchgallery.com/