A Controlled EGR Cooling System for Heavy Duty Diesel Applications Using the Vehicle Engine Cooling System Simulation

Chalgren, Robert D.; Parker, Gordon G.; Arici, O.; Johnson, John H.

doi:10.4271/2002-01-0076

Cited by 21 publications

(6 citation statements)

References 35 publications

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“…Other parameters are taken as: the air specific heat capacity at 1000 K is c pg = 1141 kJ/(kg K), k w = 52 W/(m K), d w = 8 mm, T out = 360 K [25], and Dt = 0.01 ms.…”

Section: Thermodynamic Propertiesmentioning

confidence: 99%

A one-dimensional unsteady wall film evaporation model

Yan

Liu

Jia

et al. 2015

International Journal of Heat and Mass Transfer

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“…Other parameters are taken as: the air specific heat capacity at 1000 K is c pg = 1141 kJ/(kg K), k w = 52 W/(m K), d w = 8 mm, T out = 360 K [25], and Dt = 0.01 ms.…”

Section: Thermodynamic Propertiesmentioning

confidence: 99%

A one-dimensional unsteady wall film evaporation model

Yan

Liu

Jia

et al. 2015

International Journal of Heat and Mass Transfer

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“…Çünkü klasik EGR sisteminde egzoz gazları, motor ana soğutma sistemi tarafından soğutulur. Bu durum soğutucu akışkanın motor hızına ve termostatik valfe bağlı olarak çalıştığından soğutucu akışkan debisinin kontrolüne izin vermez [19].…”

Section: Egzoz Gaz Resirkülasyon (Egr) Sistemiunclassified

Dizel Motorlarda EGR Gazlarının Soğutulmasında Harici Elektronik Kontrollü Soğutma Stratejisinin BSFC ve NOx Emisyonlarına Etkisi

Akolaş

Kaleli

Bakırcı

2020

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzDizel motorlar insan ve çevre sağlığı açısından zararları etkileri olan azot oksit (NOx) ve partikül madde (PM) yayarlar. Dizel motorlarda NOx salınımını düşürmek için kullanılan etkin ve yerleşik sistemlerden biri egzoz gaz resirkülasyon (EGR) sistemidir. Bu deneysel çalışmada, EGR sisteminin NOx ve fren özgül yakıt tüketimi (BSFC) üzerine olan etkileri araştırılmıştır. Çalışmada emme manifolduna giren EGR gaz sıcaklıkları ile EGR oranları birlikte ele alınmıştır. Deneyler kararlı durum çalışma koşullarında, 1700 d/d, 2000 d/d'da, %5, %10, %15 EGR oranlarında, yüklü ve yüksüz koşullarda yapılmıştır. EGR gaz sıcaklıklarının etkin bir şekilde kontrol edilebilmesi için EGR soğutucusu, motor ana soğutma sisteminden ayrılmıştır. Radyatör, elektrikli su pompası, elektrikli fan, sıcaklık sensörleri ve kontrolcüden oluşan harici elektronik kontrollü bir soğutma sistemi tasarlanmıştır. Gerçekleştirilen deneyler sonucunda eş zamanlı olarak, %15 EGR ve 75℃'de optimum NOx ve BSFC değerlerinin elde edildiği görülmüştür.

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“…Besides, CACs are another extraordinarily effective method for increasing ICE power density, which have been studied since the 1980s [56]. Nowadays, with the promotion of liquid cooling applications, liquid cooling CAC have now replaced the conventional air cooling CAC, as liquid cooling CAC exhibits full boost power and a faster acceleration response, as well as better fuel economy compared to traditional air cooling CACs [56][57][58][59], and thus the overall packaging volume and compartment weight could be reduced [60,61]. Additionally, to lower the lubricating oil temperature during cold start up, oil cooling systems began to be adopted in the 1990s [62,63], They are beneficial to reduce NOx and HC emissions [64,65].…”

Section: Combination With Other Cooling Circuitsmentioning

confidence: 99%

Advances in Integrated Vehicle Thermal Management and Numerical Simulation

et al. 2017

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Abstract:With the increasing demands for vehicle dynamic performance, economy, safety and comfort, and with ever stricter laws concerning energy conservation and emissions, vehicle power systems are becoming much more complex. To pursue high efficiency and light weight in automobile design, the power system and its vehicle integrated thermal management (VITM) system have attracted widespread attention as the major components of modern vehicle technology. Regarding the internal combustion engine vehicle (ICEV), its integrated thermal management (ITM) mainly contains internal combustion engine (ICE) cooling, turbo-charged cooling, exhaust gas recirculation (EGR) cooling, lubrication cooling and air conditioning (AC) or heat pump (HP). As for electric vehicles (EVs), the ITM mainly includes battery cooling/preheating, electric machines (EM) cooling and AC or HP. With the rational effective and comprehensive control over the mentioned dynamic devices and thermal components, the modern VITM can realize collaborative optimization of multiple thermodynamic processes from the aspect of system integration. Furthermore, the computer-aided calculation and numerical simulation have been the significant design methods, especially for complex VITM. The 1D programming can correlate multi-thermal components and the 3D simulating can develop structuralized and modularized design. Additionally, co-simulations can virtualize simulation of various thermo-hydraulic behaviors under the vehicle transient operational conditions. This article reviews relevant researching work and current advances in the ever broadening field of modern vehicle thermal management (VTM). Based on the systematic summaries of the design methods and applications of ITM, future tasks and proposals are presented. This article aims to promote innovation of ITM, strengthen the precise control and the performance predictable ability, furthermore, to enhance the level of research and development (R&D).

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A Controlled EGR Cooling System for Heavy Duty Diesel Applications Using the Vehicle Engine Cooling System Simulation

Cited by 21 publications

References 35 publications

A one-dimensional unsteady wall film evaporation model

A one-dimensional unsteady wall film evaporation model

Dizel Motorlarda EGR Gazlarının Soğutulmasında Harici Elektronik Kontrollü Soğutma Stratejisinin BSFC ve NOx Emisyonlarına Etkisi

Advances in Integrated Vehicle Thermal Management and Numerical Simulation

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