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Emissions

Simple, Economical, and Proven to Improve Fuel Economy

Within the past few years, 环境保护署(EPA)引入了严格的排放标准,以减少有害污染物排放到环境中. Between 2002 and 2010, 相关规定已将允许排放到大气中的颗粒物和氮氧化物减少了90%以上. These regulations proved difficult to meet, but Detroit® 工程师们通过实施选择性催化还原(SCR)bbin捕鱼游戏平台取得了成功.

 

Detroit® 工程师们使用我们的SCR排放bbin捕鱼游戏平台来减少排放,提高燃油经济性. Our engines continue to provide the industry with clean, 高效可靠的bbin捕鱼游戏平台,并通过2017年温室气体(GHG17)法规认证. 这些授权和认证是EPA和交通部公路交通安全管理局(NHTSA)首次减少重型和中型卡车温室气体(GHG)排放计划的一部分.

我们很自豪能够在bbin捕鱼游戏平台方面引领行业,不仅减少温室气体排放, but also improve fuel economy for our customers. 

Selective Catalytic Reduction (SCR)

SCR Emissions Technology

Our emissions system combines exhaust gas recirculation (EGR), selective catalytic reduction (SCR), 柴油氧化催化剂(DOC)和柴油微粒过滤器(DPF),以有效满足当前的排放标准. SCR处理发动机下游的废气,而不需要在bbin电竞游戏盖下进行复杂的改变. 它通过向排气流中注入少量柴油排气液(DEF)来实现这一目标. DEF与SCR催化剂中的NOx反应生成氮和水. 然后,我们呼吸的空气中的安全元素氮和水被释放到环境中.

SCR emissions technology helps engines perform at their peak. 它需要更少的EGR,帮助我们的发动机更有效地运行. 这使它们能够在最佳燃烧范围内运行,以提供峰值功率,并减少许多内部发动机部件的散热. 这一改进的另一个主要因素是发动机的柴油微粒过滤器(DPF)进行了更新,以帮助延长其再生间隔. 最终,SCR带来了更好的耐用性、更高的可靠性和更低的生命周期成本.

Aftertreatment System (ATS)

The Aftertreatment System

The innovative 1-Box Configuration, available only with Detroit® engines, combines the SCR catalyst, the diesel oxidation catalyst (DOC), 柴油微粒过滤器(DPF)和柴油排气液(DEF)成一个紧凑的组件. 将所有这些系统结合在一起,可以降低发动机背压,降低整体重量, yielding better fuel economy. 1-Box是每辆卡车的标准配置,并与您选择的发动机相结合. The system's job is to reduce NOx 并捕获和燃烧掉(再生)发动机废气中的颗粒物质(烟灰). It does this using a DOC and a DPF. 通过监测排气温度和系统背压、DDEC® 控制模块确定了确保DPF中捕获的烟灰完全再生所需的最有效方法.

Stationary Regeneration

Depending on engine duty or application, DDEC可能会通知驱动程序静止再生是必要的. 一旦驾驶员开始静止的高怠速再生过程, it typically takes up to 45 minutes to complete.

 

 

 

 

 

Active Regeneration

When required, DDEC从两个关键的上游组件获得帮助,这两个组件协助进行称为主动再生的过程. 这种主动再生过程发生在车辆的正常运行周期中.

  1. 进气节气门是电子驱动的,以帮助提高后处理系统的温度, assisting regeneration.
  2. 定量阀将柴油喷雾注入排气系统,以进一步提高后处理系统的温度,直到完成满意的再生.

Maintenance

维护您的后处理系统很容易,因为我们这样设计的. 柴油微粒过滤器(DPF)会收集灰尘,最终需要更换, 但当需要更换过滤器时,DDEC系统会提醒您. In addition to proper DPF maintenance, make sure the Detroit® 遵循建议的维护间隔,以确保后处理系统充分发挥其潜力. 这些包括以下项目,以及在您的 Operator’s Manual.

• Oil Change
• Air Filter
• Fuel Quality
• Proper DEF and fluid levels. (切记不要将DEF放入油箱或将燃油放入DEF油箱!)

Reference your Detroit® 有关DEF指示灯和停车再生程序的更多信息的bbin电竞游戏驾驶员卡. 

Cleaning the Diesel Particulate Filter (DPF)

Note: Detroit® 剩余的DPF目前不在加州出售或安装

If the DPF needs more extensive service, use the Detroit® Genuine Parts Replacement program. Your DPF will be replaced with our signature Detroit® Genuine Parts brand, 而旧芯被送回我们的工厂进行广泛的专利, environmentally friendly washing service.

Aftermarket cleaning methods, such as “bake & blow”, leave harmful ash residue in the filter. This will potentially lead to aftertreatment system damage, increased downtime, and additional maintenance costs. Only remanufactured Detroit® 正品DPF采用专有的清洁工艺,经证明可从DPF中去除95%以上的灰. It’s the only DPF cleaning process you can trust.

 

后处理系统需要含硫量低于15ppm的柴油. 较高的硫含量可能最终导致污染或过早堵塞柴油微粒过滤器损坏后处理系统. 使用正确的燃料对后处理系统的正常运行至关重要, while also helping lower emissions.

 

Learn more about DPF Cleaning

DEF

Diesel Exhaust Fluid (DEF)

DEF is a simple, non-toxic, 由三分之二纯水和三分之一汽车级尿素组成的廉价预混合流体. 它被用作scr发动机的催化剂,以减少氮氧化物(NOx)的排放. 根据卡车的用途,油箱的大小从6加仑到23加仑不等, which means you, can go thousands of miles between fill-ups. DEF is sold at thousands of locations throughout North America. To find your nearest DEF location, visit DiscoverDEF.com.

discover def

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