Method for controlling the oxygen level in the intake manifold of an internal combustion engine equipped with a low pressure egr system
A technology for intake manifolds and internal combustion engines, applied in electrical control, engine control, fuel injection control, etc., can solve problems such as increasing the complexity of the engine structure
Inactive Publication Date: 2016-08-17
GM GLOBAL TECH OPERATIONS LLC
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Problems solved by technology
[0010] Although low pressure EGR routing systems have some advantages, as explained above, they also increase the complexity of the engine structure and the burden of controlling various combustion parameters
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[0023] A more preferred embodiment of the invention is also described with the help of the mentioned figures.
[0024] The invention is disclosed hereinafter with reference to a turbocharged diesel engine system. However, the invention would in principle be applicable to different diesel engine systems, even spark ignition engine systems.
[0025] The turbocharged diesel engine system comprises a diesel engine 1 with an intake manifold 10 and an exhaust manifold 11, an intake line 2 for delivering fresh air from the environment to the intake manifold 10, an exhaust manifold Road 3, which is used to deliver exhaust gas from the exhaust manifold 11 to the environment, and turbocharger 4, which includes a compressor 40 located in the intake line 2 for compressing the air flow flowing therein, and located in the exhaust The gas pipeline 3 is used to drive the turbine 41 of the compressor 40 . A temperature sensor 80 is provided for determining the temperature in the intake manif...
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Method for controlling the oxygen concentration level within the intake manifold of an internal combustion engine system, the engine having an intake manifold and an exhaust manifold and corresponding intake and exhaust lines, the intake pipe The line has lead points for mixing fresh air, first and second EGR lines, an intercooler located in the intake line upstream of the intake manifold and downstream of the second EGR line, turbocharger Having a compressor located in the intake line and a turbine located in the exhaust line, the exhaust line having a diesel oxidation catalyst and an anti-particulate filter, the system has a system for regulating the exhaust gas flow a rate regulating device, the regulating device comprising a low pressure EGR valve associated with the second EGR route, the method comprising at least regulating the intake line between the pilot point and the intake manifold a phase for determining the oxygen concentration set point at any point in the section, and a phase for maintaining the desired oxygen concentration set point at any point in the section.
Description
technical field [0001] The present invention relates to a method for controlling the level of oxygen concentration in the intake manifold of an internal combustion engine, in particular a turbocharged diesel engine system equipped with a low pressure EGR system. Background technique [0002] A turbocharged diesel engine system typically includes a diesel engine with an intake manifold and an exhaust manifold for delivering fresh air from the environment to an intake line within the intake manifold for delivering exhaust gases from the exhaust manifold an exhaust line to the environment, and a turbocharger comprising a compressor in the intake line for compressing the air flow flowing therein, and in the exhaust line for driving the Compressor turbine. [0003] Turbocharged diesel engine systems also include an intercooler, also known as a charge air cooler, located in the intake line downstream of the compressor to cool the air flow before reaching the intake manifold, and ...
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IPC IPC(8): F02D41/14F02B29/04F02D41/00F02M26/05F02M26/06F02M26/15F02M26/38F02M26/47F02M26/46
CPCF02B3/06F02B29/0406F02D41/0007F02D41/0052F02D41/0072F02D41/029F02D41/1458F02D41/187F02D2041/0067F02D2041/141F02D2200/0402F02D2200/0414F02M26/05F02M26/06F02M26/15F02M26/38F02M26/46F02M26/47Y02T10/12Y02T10/40F02D41/0047F02M26/00F02M26/07F02M26/22
Inventor 保罗·帕瑟罗弗朗西斯科·卡斯托里纳
Owner GM GLOBAL TECH OPERATIONS LLC