Hydrocarbon retaining system and extract system
A technology for hydrocarbons and holding systems, which can be used in charging systems, adding non-fuel substances to fuels, electronic control of exhaust gas treatment devices, etc., and can solve problems such as small porosity
Inactive Publication Date: 2013-05-01
FORD GLOBAL TECH LLC
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[0003] However, the inventors of the present invention have recognized that in some instances the porosity of the hydrocarbon retention means may be too small
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[0012] figure 1 A schematic diagram of a vehicle system 6 is shown. Vehicle system 6 includes engine system 8 connected to hydrocarbon (HC) retention system 22 and fuel system 18 .
[0013] Engine system 8 may include engine 10 having a plurality of cylinders 30 . Engine 10 includes an intake system 23 and an exhaust system 25 . Intake system 23 includes throttle 62 fluidly coupled to engine intake manifold 44 via intake passage 42 . Exhaust system 25 includes an exhaust manifold 48 that leads to exhaust passage 35 that delivers exhaust to atmosphere. Exhaust system 25 may include one or more emission control devices 70 that may be mounted in close-coupled locations within the exhaust system. The one or more emission control devices may include a three way catalyst, a lean NOx trap, a diesel particulate filter, an oxidation catalyst, and the like. should be clearly as figure 2 As shown in the example engine of , other components such as various valves and sensors may be...
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The invention relates to a hydrocarbon retaining system and an extract system, comprising a fuel system; a hydrocarbon retaining system selectively connected to an air intake system, an exhaust system and the fuel system, wherein the hydrocarbon retaining system comprises a first and a second hydrocarbon retaining devices, compared with that of the first hydrocarbon retaining device, the second hydrocarbon retaining device is provided with less porosity; and a controller which is used to selectively convey exhaust gas of the engine to the first hydrocarbon retaining device and then convey to the second hydrocarbon retaining device so as to store the exhaust gas hydrocarbon, selectively convey fuel steam from the fuel system to the hydrocarbon retaining system, as well as selectively extract the hydrocarbon stored in the hydrocarbon retaining system to the air intake system of the engine. The invention also describes a system for managing exhaust of a vehicle engine and a plurality of associated configurations. The invention can improve storage and extraction of HC.
Description
【Technical field】 [0001] The present invention generally relates to an exhaust gas treatment system for an internal combustion engine. 【Background technique】 [0002] Engine exhaust systems have utilized hydrocarbon retention devices, such as hydrocarbon traps, to retain cold start emissions for late reaction, or to recirculate into the engine intake system. [0003] However, the inventors of the present invention have recognized that in some instances the porosity of the hydrocarbon retaining means may be too small. Especially macromolecular hydrocarbons can become irremovably lodged in the device. On the other hand, in some instances, depending on the fuel being burned, the porosity of the hydrocarbon retaining device may be too large, producing many small molecule hydrocarbons to pass through the exhaust system. 【Content of invention】 [0004] The above-mentioned problems may be solved by providing a system for a vehicle including an engine having an intake system and...
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IPC IPC(8): F02M25/00
CPCF01N2013/023F01N3/0878F01N2560/08Y02T10/47Y02T10/16F02M25/0854Y02T10/20F01N9/00F02M25/0836F02M25/0827F02M25/089F01N3/0835F01N5/02F01N13/0093Y02T10/12Y02T10/40
Inventor 夏恩·埃尔沃特詹森·亚伦·卢佩斯库迈克尔·詹姆士·乌里奇詹姆士·迈克尔·克恩兹
Owner FORD GLOBAL TECH LLC