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The Beijing Construction Machinery Exhibition, as a barometer of the industry, has been successfully held for fifteen sessions and has undergone 34 years of development. The theme of each exhibition reflects the trend of industry development. The theme of this exhibition is "Digital Efficiency, Green Reliability", which will showcase high-end, intelligent, and green engineering machinery products and technologies. At the same time, new field suppliers and service providers who have introduced the latest service solutions for the first time will appear at the exhibition, including certification, training, finance, leasing, aftermarket, unmanned driving supporting services and other enterprises. In addition, tower cranes, elevators, and other equipment will also make their debut at Shunyi Pavilion.

Zhonglutong is a manufacturer and seller of diesel engine components, dedicated to providing customers with high-quality fuel injection system accessories. The company has passed ISO9001:2015 quality system certification, and its products meet quality standards and have price advantages. They are exported to South America, the Middle East, Southeast Asia, Africa and other places, and have gained widespread recognition and recognition in the market. The company adopts a good premise plan and reasonable production process, a sound production quality management mechanism and testing equipment, and produces the three major components of the diesel engine fuel supply system - pump head, fuel injector, plunger, control valve, valve plate, unit pump, fuel injector calibrator, high-pressure common rail test bench, fuel injector, common rail pump, common rail valve components. The products are widely used in the maintenance and repair of light, medium, and high-power diesel engines, covering industries such as automotive, agricultural, engineering machinery, and marine. At present, our company has over 6000 models of diesel injection system (common rail system) spare parts and is constantly developing new products to meet the needs of the market and customers.

I hope to explore and exchange ideas with your company through this opportunity, so that we can deepen our cooperation and jointly explore and occupy the market. Zhonglu Tongcheng invites you to participate, we are honored! 1NYGK

It is my honor and pleasure to invite you to participate in the AUTOTECH 2023, the Cairo International Motor Show, is the premier and the most prestigious event for the automotive industries in the Middle East & North Africa (MENA).

It is the largest and most comprehensive trade show for the auto aftermarket industry and is the platform to meet top decision makers specialized in automobile spare parts, accessories, motorcar workshops, service station equipment and feeding industries with quality trade visitors from Egypt and North Africa. During this three days, You are warmly welcome to visit us at our booth H2.D15

Mam zaszczyt i przyjemność zaprosić Państwa do udziału w AUTOTECH 2023, Międzynarodowym Salonie Motoryzacyjnym w Kairze, to najważniejsze i najbardziej prestiżowe wydarzenie dla branży motoryzacyjnej na Bliskim Wschodzie i w Afryce Północnej (MENA).
1.在起动机带动发动机转动时，用长柄起子或听诊器听喷油器是否有“嗒嗒、嗒嗒”的工作声音，若因其它噪声的影响而不易判断时，可在听诊的同时，采用拔下再插上喷油器线束插头的方法来鉴别喷油器是否工作。

2.如果喷油器不工作，可用一试灯接在喷油器的线束插头上再起动发动机。若试灯闪烁，说明喷油器控制系统工作正常，故障在喷油器。喷油器的检查，应使用万用表测量其电磁线圈的电阻值。电阻值正常，说明喷油器堵塞(受燃烧时产生的积炭和燃油中胶质的影响。此现象常见)、针阀卡死等，应检修、清洗或更换喷油器;电阻值不正常，则必须更换喷油器。

3.如果试灯不亮，说明喷油器的控制系统或线路有故障。对此，应先检查喷油器相关线路是否完好，在外部线路的情况下，方可判断为电脑有故障。

汽车喷油器结构原理——喷油器的保养

喷油器工作700h左右应检查调整一次。若开启压力低于规定值1Mpa以上或针阀头部积碳时，则应卸出针阀放入清洁柴油中用木片刮除积碳，用细钢丝疏通喷孔，装后进行调试，要求同一台机器的各缸喷油压力差必须小于1Mpa。　　

为使喷油器喷入缸内的柴油能够及时地完全燃烧，必须定期检查油泵的供油时间。供油时间过早，车辆会出现起动困难和敲缸的故障；供油时间过迟，会导致排气冒黑烟，机温过高，油耗上升。　　

喷油器针阀偶件的配合精度，并且喷孔孔径很小，因而必须严格按照季节变化选用规定牌号的清洁柴油，否则喷油器就不能正常工作。　　

清洗喷油器针阀偶件时不得与其它硬物相撞，也不可使其跌落在地，以免碰伤擦伤。更换喷油器针阀偶件时，应先将新偶件放入80℃的热柴油中浸泡10 s左右，让防锈油充分溶化后，再在干净柴油将针阀在阀体内来回抽动，洗净，这样才能避免喷油器工作时因防锈油溶化而发生粘住针阀的故障。

喷油嘴能否正常的运行工作，在于我们是否把它保养得当。检查喷油器是否喷油：油泵工作正常时，检查喷油器。启动发动机，用听诊器触及喷油器听有无工作的响声。无响声，喷油器不工作。再用一个大阻抗的试灯，接在喷油器的线束插头上，启动发动机，如果试灯亮，说明喷油器的控制电路正常，故障在喷油器，应予更换。如试灯不亮，故障在喷油器控制电路。

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