Study on Reduction of Diesel Engine Out Emission through Closed Loop Control based on the In-Cylinder Pressure with EGR Model

Lee, Seung–Hyun; Lee, Jeongwoo; Lee, Seung-Ha; Kim, Dongsu; Lee, Yoonwoo; Yu, Sung Hoon; Choi, Hae-Jin

doi:10.4271/2013-01-0322

Cited by 14 publications

(15 citation statements)

References 17 publications

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“…The thinner the shield, the higher the risk of sensor breakage, but the thermocouple lag decreases. To get the best response, exposed thermocouples have been used in some experiments (Lee et al, 2013), however this type of sensors are mostly used in laboratory environments because of poor robustness.…”

Section: Introductionmentioning

confidence: 99%

Partially premixed combustion multi-cylinder engine cycle-to-cycle-oriented temperature estimation and control

Yin

Ingesson

Tunestål

et al. 2017

IJPT

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Advanced combustion concepts like partially premixed combustion (PPC) are sensitive to inlet gas conditions especially inlet temperature. To estimate the combustion parameters like ignition delay on a cycle-to-cycle basis, both complementary filter and extended Kalman filter were designed to estimate the inlet temperature, and the ignition delay was calculated with properly estimated temperature. A two valve fast thermal management system was used to control the inlet temperature, and a PI controller with the lambda tuning method was used. The estimation and control algorithm were verified on a six-cylinder heavy duty engine.

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Section: Introductionmentioning

confidence: 99%

Partially premixed combustion multi-cylinder engine cycle-to-cycle-oriented temperature estimation and control

Yin

Ingesson

Tunestål

et al. 2017

IJPT

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“…Determination of combustion metrics for an internal combustion engine has the potential of providing feedback for closed-loop combustion phasing control to meet current and upcoming emission and fuel consumption regulations. Closed-loop control of the combustion process has been a focus for engine research and development [1][2][3]. Open-loop operation based on calibration maps which are conservatively set based upon laboratory operation can give a quick response and is relatively easy to control.…”

Section: Introductionmentioning

confidence: 99%

“…Open-loop operation based on calibration maps which are conservatively set based upon laboratory operation can give a quick response and is relatively easy to control. However, the open loop cannot adapt to the changes caused by the condition variations such as injector aging and fuel quality [2].…”

Section: Introductionmentioning

confidence: 99%

Review of Sensing Methodologies for Estimation of Combustion Metrics

Jia

Naber

Blough

2016

Journal of Combustion

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For reduction of engine-out emissions and improvement of fuel economy, closed-loop control of the combustion process has been explored and documented by many researchers. In the closed-loop control, the engine control parameters are optimized according to the estimated instantaneous combustion metrics provided by the combustion sensing process. Combustion sensing process is primarily composed of two aspects: combustion response signal acquisition and response signal processing. As a number of different signals have been employed as the response signal and the signal processing techniques can be different, this paper did a review work concerning the two aspects: combustion response signals and signal processing techniques. In-cylinder pressure signal was not investigated as one of the response signals in this paper since it has been studied and documented in many publications and also due to its high cost and inconvenience in the application.

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“…A thermal anemometer which uses a ceramic element can be made into an EGR flow rate sensor [15]. It is also reported that the hot EGR mass fraction can be estimated by the temperature of hot EGR gas and fresh charging air using the thermal balance method [16,17]. In literature the majority of reported research concerning EGR system (e.g.…”

Section: Introductionmentioning

confidence: 99%