B、C系列机每个气缸装有2个气门（一个进气门、一个排气门，进气门头部直径大于排气门）。为提高进、排气量，N系列、K系列机的每个气缸装有4个气门（2个进气门，2个排气门）。气门有两种制作方法，一是用全金属制作，进气门为普通合金钢，排气门为耐热合金钢；另一种是在气门密封锥面上堆焊特种合金。为了提高排气门在高温下的耐热性和耐腐蚀性，提高排气门的使用寿命，在排气门密封锥面上堆焊耐热合金。气门顶面有平顶、凸顶和凹顶等形状，机采用平顶气门。气门头部的密封锥面与气门座严密结合，配对研磨，以实现气门的密封，使用中不能互换。气门锥面与气门顶面之间的夹角称为气门锥角，进、排气门的气门锥角一班均为45°，少数进气门锥角为30°，较小的锥角可获得较大的流通面积，较小气门落座时的相对滑移。因气门锥角较小，其气门头部的边缘较薄，刚度较差，容易变形，致使气门与气门座圈之间的密封性变差。气缸盖上与气门锥面相贴合的部位称为气门座。铝气缸盖和大多数铸铁气缸盖均镶嵌由合金铸铁、粉末冶金或奥氏体钢制的气门座圈。也有一些铸铁气缸盖不镶气门座圈，直接在气缸盖上加工出气门座，B系列机即使如此。气门座圈以一定的过盈压入气缸盖上的座孔中，气门座或气门座圈的锥角与气门锥角相适应，形成密封环带B。气门锥角也可比气门座或气门座圈锥角小0.5°~1°，其作用是使两者不以锥面的全宽接触，这样可以增加密封锥面的接触压力，加速磨合，并能切断和挤出两者之间的任何积垢或积炭，保持锥面良好的密封性。动力设备（深圳）有限公司，集团旗下专业运营阳泉干式变压器的销售业务及其售后服务，是中国区获得授权的阳泉干式变压器OEM成套厂家，长期与中字央企、大型房地产商、国际连锁酒店、著名建筑企业等单位建立战略合作伙伴关系。动力在中国布局五大阳泉干式变压器组生产基地，阳泉干式变压器售后服务点可辐射中国各省会及地级市区域。l阳泉干式变压器区分：移动式阳泉干式变压器、固定式阳泉干式变压器、超静音式阳泉干式变压器、机组载式阳泉干式变压器。l常见阳泉干式变压器功率（千瓦）范围：50KW至1000KW功率段。更多有关阳泉干式变压器的最新产品和技术内容，请登录阳泉干式变压器官网：
http://www.11fdj.com阳泉干式变压器组的技术指标与其稳定性领先全球：高压注入(HPI)PT全权电子燃油系统。HPI G-Drive采用PT燃油系统由控制系统(GCS)控制器,这是提供off-engine安装阳泉干式变压器组的控制面板。量子控制一个特定的燃料系统板与HPI-PT燃油系统接口,提供了一个引擎保护包给大客户的灵活性和成本有效的替代控制设计和完整的权威electroni的好处。nCTT(涡轮增压技术)HX82 HX83涡轮增压利用排气能量与更高的效率改进的排放和燃料消耗。n低温冷却后,两泵双回线(2 p2l)。n黑色金属铸造球墨铸铁(FCD)活塞-高强度设计提供卓越的耐久性。nG-Drive集成设计,每个组件都有专门为G-Drive产品开发和严格的测试,确保高性能,耐久性和可靠性。n服务和支持——G-Drive以上信息由深圳动力官方发布，未经允许请勿转载！Cummins power equipment (shenzhen) co., LTD., corp., a professional operating cummins diesel generator sales and after-sales service, is China authorized OEM kit manufacturer of diesel generator, and for a long time in the state, large real estate developers, famous international hotel chain, construction enterprises and other units to establish strategic cooperative partnership. Cummins power layout in China five largest production base for diesel generator set, generator after-sales service point radiation China provinces and cities area.lgenerator to distinguish: portable generators, stationary generators, silent type generator, vehicular power generators.lcommon range of generator power (kw) : 50 kw to 1000 kw power.More about the latest products and technology content diesel generators, please log in the generator's official website:
http://www.11fdj.comCummins diesel generator set technical indicators and leading global stability:
Cummins High Pressure Injection (HPI) PT full authority electronic fuel system.The HPI PT fuel system is managed by a G-Drive Governor Control System (GCS) controller, which is provided for off-engine mounting in the genset control panel. The Quantum Control has a specific fuel system board to interface with the HPI-PT fuel system and provides an Engine Protection package giving greater customer flexibility and cost effective alternatives in the control design and the benefits of Full Authority electronic control.
nCTT (Cummins Turbo Technologies) HX82/HX83 turbo-chargingutilizes exhaust energy with greater efficiency for improved emissions and fuel consumption. nLow Temperature After-cooling- Two-pump Two-loop (2P2L). nFerrous Cast Ductile Iron (FCD) Pistons- High strength design delivers superior durability. nG-Drive Integrated Design- Each component has been specifically developed and rigorously tested for G-Drive products, ensuring high performance, durability and reliability. nService and Support- G-Drive products are backed by an uncompromising level of technical support and after sales service, delivered through a world class service network. nCoolpac Integrated Design-Products are supplied complete with cooling package and air cleaner kit for a complete power package. Each component has been has been specifically developed and rigorously tested for G-Drive products, ensuring high performance, durability and reliability.
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