Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for determining a dilution of recirculated gases in a split exhaust engine

A recirculation and gas technology, applied in exhaust gas recirculation, temperature measurement of moving fluid, thermometer, etc., can solve problems such as deteriorating engine performance

Pending Publication Date: 2019-10-08
FORD GLOBAL TECH LLC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Timing adjustments to engine operation such as fuel injection, spark advance, and intake and exhaust valve actuation timing based on the EGR gas composition employed by conventional EGR systems can result in degraded engine performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining a dilution of recirculated gases in a split exhaust engine
  • Method for determining a dilution of recirculated gases in a split exhaust engine
  • Method for determining a dilution of recirculated gases in a split exhaust engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The following description relates to a system and method for operating a split exhaust engine in the case of blowing and exhaust gas recirculation (EGR) via a scavenging exhaust manifold to an intake port. Such as figure 1 As shown in, the split exhaust engine includes a first exhaust manifold (referred to herein as the bleed exhaust manifold) specifically coupled to the bleed exhaust valve of each cylinder. The exhaust manifold is coupled to an exhaust passage of the engine, wherein the exhaust passage includes a turbocharger turbine and one or more emission control devices (which may include one or more catalysts). The split exhaust engine may also include a second exhaust manifold (referred to herein as a scavenging exhaust manifold) specifically coupled to the scavenging exhaust valve of each cylinder. The scavenging manifold is coupled to the intake passage upstream of the turbocharger compressor via a first EGR passage including a first EGR valve (referred to herei...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Methods and systems are provided for determining a dilution of recirculated gases, including blowthrough air, combusted exhaust gas, and fuel vapor, in a split exhaust engine. In one example, the dilution rate may be calculated using a steady state model based on temperature measurements from an intake region of the engine. The steady state model may be further used in combination with a feedforward model adapted to estimate engine dilution during engine transients as a correction factor.

Description

Technical field [0001] This description generally relates to a method and system for determining the dilution value or the dilution rate of recirculated gas in a split exhaust engine operating using blow air. Background technique [0002] Engines can use supercharging devices, such as turbochargers, to increase engine power density. However, engine knock may occur due to increased combustion temperature. Knock is particularly problematic under pressurized conditions due to high inflation temperatures. The inventors herein have recognized that the use of an engine system with a split exhaust system can reduce knock and increase engine efficiency, where the first exhaust manifold carries exhaust gas recirculation (EGR) to the compressor located in the turbocharger. The intake port of the engine upstream of the engine, and where the second exhaust manifold carries exhaust gas to the turbine of the turbocharger in the exhaust port of the engine. In this type of engine system, each...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01M15/10G01K13/02G01K13/024
CPCG01M15/102G01K13/02G01K13/024F01N13/107F02D13/0215F02D13/0257F02D41/0072F02D2041/0067F02M26/04F02M26/43Y02T10/12Y02T10/40F02M26/07F02D41/0077
Inventor 丹尼尔·麦迪逊约瑟夫·乌雷戈皮钱德拉·苏尼拉穆罕纳德·哈基姆罗斯·戴卡斯特拉·普西福尔
Owner FORD GLOBAL TECH LLC