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Port injection system for reduction of particulates from turbocharged direct injection gasoline engines

A technology of air inlet injection and turbocharging, which is applied to engine components, combustion engines, engine ignition, etc., can solve the problems of increasing turbocharged engine particle emissions, poor fuel mixing, etc., and achieve the effect of reducing particle emissions

Inactive Publication Date: 2015-10-07
ETHANOL BOOSTING SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A key contributor to the problem is poor mixing of direct injected fuel (fuel that is introduced directly into the cylinders of the engine as a liquid)
Increased particle emission problems in turbocharged engines due to increased absolute pressure in the cylinder

Method used

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  • Port injection system for reduction of particulates from turbocharged direct injection gasoline engines
  • Port injection system for reduction of particulates from turbocharged direct injection gasoline engines
  • Port injection system for reduction of particulates from turbocharged direct injection gasoline engines

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Embodiment Construction

[0013] As described above, the present invention monitors and regulates engine operation using an engine control system to maximize engine performance and efficiency and minimize particulate emissions. The engine control system can affect the composition of the fuel introduced through the use of PFI and DI based on engine operating conditions, particulate emissions, and other factors.

[0014] Closed loop control, open loop control, or a combination of open loop and closed loop may be used to optimize particle emission reduction while providing the desired amount of knock control. Various embodiments of these control systems are shown in the drawings.

[0015] figure 1 A schematic diagram showing an engine system with two sets of injectors, namely, port fuel injectors 10, which introduce fuel into an area outside the cylinders, such as a manifold 15, for each cylinder There is a port fuel injector 10; and direct injectors 20 which introduce fuel as a liquid directly into the...

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Abstract

The present invention describes a fuel-management system for minimizing particulate emissions in turbocharged direct injection gasoline engines. The system optimizes the use of port fuel injection (PFI) in combination with direct injection (DI), particularly in cold start and other transient conditions. In the present invention, the use of these control systems together with other control systems for increasing the effectiveness of port fuel injector use and for reducing particulate emissions from turbocharged direct injection engines is described. Particular attention is given to reducing particulate emissions that occur during cold start and transient conditions since a substantial fraction of the particulate emissions during a drive cycle occur at these times. Further optimization of the fuel management system for these conditions is important for reducing drive cycle emissions.

Description

[0001] This application claims priority to US Provisional Application Serial No. 61 / 734,438, filed December 7, 2012, the entire disclosure of which is incorporated herein by reference. Background technique [0002] There is growing concern about particulate matter (PM) emissions from turbocharged direct-injection spark-ignition engines using gasoline and gasoline-alcohol blends. A key contributor to this problem is poor mixing of direct injected fuel (fuel that is introduced directly into the engine cylinders as a liquid). The particulate emission problem in turbocharged engines increases due to the increased absolute pressure in the cylinders. Considerations regarding particle emissions relate to the total mass of particles and the number of particles. There appears to be a particular need to meet anticipated European requirements for particle count reduction. [0003] Port injection and direct injection have complementary advantages. Due to better mixing, reduced wall wet...

Claims

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Application Information

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IPC IPC(8): F02B7/00
CPCF02D41/3094F02B2075/125F02D13/0215F02D13/06F02D19/084F02D37/02F02D41/0007F02D41/0025F02D41/0027F02D41/047F02D41/064F02D41/10F02D41/345F02D41/3836F02D2041/001F02D2041/389F02D2250/38F02M69/046F02P5/1521F02D41/1466Y02T10/30Y02T10/40Y02T10/12Y02T10/10F02P5/145
Inventor D.R.科恩L.布罗姆伯格
Owner ETHANOL BOOSTING SYST LLC
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