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    Filters for cooling apparatus
    6.
    发明授权
    Filters for cooling apparatus 有权

    公开(公告)号：US12215618B2

    公开(公告)日：2025-02-04

    申请号：US18437940

    申请日：2024-02-09

    Applicant: Perkins Engines Company Limited

    Inventor： Wing Ngai Wong ,  Siddharth Subhash Gharpure

    IPC: F01P11/02 ,  B01D29/11 ,  B01D35/027 ,  F01N3/20 ,  F01P7/14 ,  F01P11/06

    Abstract: A cooling apparatus for an engine comprising: a) a coolant reservoir comprising a coolant line outlet port; b) a tank for holding an aqueous urea solution for injection into an exhaust system of the engine; c) a coolant line for transferring a coolant fluid discharged from the coolant reservoir via the coolant line outlet port to the tank to enable, in use, heat exchange between the coolant fluid and the aqueous urea solution contained in the tank; d) a coolant control valve located on the coolant line for controlling flow of coolant fluid along the coolant line to the tank; and e) a filter for filtering the coolant fluid being discharged via the coolant line outlet port; wherein the filter comprises a filtering portion that is located within an interior of the coolant reservoir so that the coolant fluid is filtered within the coolant reservoir before the coolant fluid enters the coolant line.

    Injector deposit dissolution system and method
    7.
    发明授权
    Injector deposit dissolution system and method 有权

    公开(公告)号：US10400650B2

    公开(公告)日：2019-09-03

    申请号：US15829191

    申请日：2017-12-01

    Applicant: Perkins Engines Company Limited

    Inventor： Siddharth Subhash Gharpure ,  Tom Carlill

    IPC: F01N3/24 ,  F01N3/20

    Abstract: An SCR injection system for an internal combustion engine is disclosed. Under certain conditions, reductant fluid supplied by the system may form deposits in a reductant injector. In order to dissolve the deposits, a reductant supply line includes at least a portion with a downward slope that is disposed above a reductant inlet of the reductant injector. This allows reductant fluid in the sloped portion to flow to the reductant inlet due to gravity. Advantageously, a bent portion is provided between the reductant inlet and the sloped portion in order to trap reductant fluid that may flow back towards the reductant injector when the system is purged.

    Method of Controlling an Engine System
    8.
    发明申请
    Method of Controlling an Engine System 审中-公开
    控制发动机系统的方法

    公开(公告)号：US20160298515A1

    公开(公告)日：2016-10-13

    申请号：US15094313

    申请日：2016-04-08

    Applicant: Perkins Engines Company Limited

    Inventor： Siddharth Subhash Gharpure ,  Andrew Cawdery

    IPC: F01N3/20

    CPC classification number: F01N3/208 ,  F01N11/002 ,  F01N2570/14 ,  F01N2610/146 ,  F01N2900/04 ,  F01N2900/1404 ,  Y02T10/24 ,  Y02T10/47

    Abstract: The present disclosure is directed towards a method of controlling an engine system comprising an exhaust aftertreatment module and a controller. The exhaust aftertreatment module is for receiving exhaust gas from an internal combustion engine and comprises a reductant injector selectively operable to inject a reductant fluid from an injector outlet. The controller is configured to control injection of reductant fluid in one of a plurality of different regimes. A first regime comprises injecting reductant fluid in accordance with a first set of injection parameters for reacting with, and substantially reducing, one or more components of the exhaust gas in the exhaust aftertreatment module. A second regime comprises injecting reductant fluid in accordance with a second set of injection parameters for expelling solid reductant deposits formed over the injector outlet. The method comprises determining which of the plurality of regimes to implement. The first regime is implemented when the exhaust gas temperature is above a threshold temperature and the second regime is implemented when the exhaust gas temperature is below the threshold temperature.

    Abstract translation: 本公开涉及一种控制包括排气后处理模块和控制器的发动机系统的方法。 废气后处理模块用于接收来自内燃机的废气，并且包括还原剂喷射器，其选择性地可操作以从喷射器出口喷射还原剂流体。 控制器被配置为控制在多个不同方式之一中的还原剂流体的注入。 第一方案包括根据第一组注入参数注入还原剂流体，用于与排气后处理模块中的一种或多种废气组分反应并且基本上减少排气的一种或多种组分。 第二方案包括根据第二组注入参数注入还原剂流体，以排出在喷射器出口上形成的固体还原剂沉积物。 该方法包括确定要实现的多个方案中的哪一个。 当废气温度高于阈值温度时实施第一制度，并且当废气温度低于阈值温度时实施第二制度。

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