Method and system for reducing particulate emissions
A particulate filter and engine system technology, applied in the direction of electronic control of exhaust treatment devices, diagnostic devices of exhaust treatment devices, exhaust devices, etc., can solve the problem that the temperature of particulate filters cannot reach a high enough temperature and reduce fuel consumption. Economy, increase filter temperature and other issues, achieve the effect of maintaining fuel economy, improving reliability, and maintaining PM emissions
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[0014] The following description relates to systems and methods for reducing particulate emissions from an engine system including an exhaust reversing valve and an exhaust particulate filter. figure 1 A vehicle engine system including an exhaust particulate filter is shown in , which may be configured to operate on a fuel such as diesel or gasoline. The exhaust particulate filter may include a diesel particulate filter (DPF), a gasoline particulate filter (GPF), and the like to filter particulate matter (PM) in engine exhaust. Exhaust particulate filters trap PM during vehicle driving such as figure 2 shown in the graph in. Such as Figure 3 to Figure 4 As shown in , exhaust gas may be directed via an exhaust reversing valve in the main exhaust passage to an exhaust particulate filter disposed in the bypass exhaust passage. Figure 5 A method for operating an engine system including an exhaust reversing valve for directing exhaust gas to an exhaust particulate filter is s...
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