The Application of Precision Cooling to the Cylinder-Head of a Small, Automotive, Petrol Engine

Finlay, I. C.; Gallacher, G. R.; Biddulph, T. W.; Marshall, R. A.

doi:10.4271/880263

Cited by 32 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As an attempt of developing a predictive method for wide ranges of various parameters, Groeneveld, et al [80], based on a data bank of more than 15000 tube CHF data points, proposed a CHF lookup table for a vertical upward water flow in an 8-mm-diameter tube covering the parameter ranges of pressure 100-20000 kPa, mass flux 0-7500 kg/m2s, and vapor mass quality -50%-100%. Further extension of the lookup table can be achieved with multiplying the table CHF value by appropriate correction factors including subchannel or tube cross section factor 1 K , bundle factor 2 K , grid spacer factor 3 K , heated length factor 4 K , axial flux distribution factor 5 K , and flow factor 6 K [80][81]. With proper modifications, the lookup table can also be used for the prediction of CHFs of non-aqueous fluids [80,82].…”

Section: Predictive Models For Critical Heat Flux In the Literaturementioning

confidence: 99%

“…In addition, precision cooling using the 50/50 EG/W liquid mixture is limited by the coolant liquid properties and the cooling system geometry. Because of its order-of-magnitude higher heat transfer rates, there is interest in using controllable two-phase nucleate boiling instead of conventional single-phase forced convection in vehicular cooling systems under certain conditions or in certain areas of the engine to remove ever increasing heat loads and to eliminate potential hot spots in engines [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pressure drop, heat transfer, critical heat flux, and flow stability of two-phase flow boiling of water and ethylene glycol/water mixtures - final report for project "Efficent cooling in engines with nucleate boiling."

Yu¹,

Routbort²

2011

View full text Add to dashboard Cite

Section: Predictive Models For Critical Heat Flux In the Literaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pressure drop, heat transfer, critical heat flux, and flow stability of two-phase flow boiling of water and ethylene glycol/water mixtures - final report for project "Efficent cooling in engines with nucleate boiling."

Yu¹,

Routbort²

2011

View full text Add to dashboard Cite

“…They replaced the original coolant passage with smaller sizes around the valve guides and seats and also injector boss. Finlay et al [4] applied higher coolant velocities in the thermally critical areas which led to a significant reduction in the bulk coolant flow rate. Arcoumanis et al [5] used Laser-Doppler Velocimetry technique to characterize local velocities in a transparent model of a production DI diesel engine.…”

Section: Introductionmentioning

confidence: 99%

“…Some modifications were made on the block and head toward better cooling. Similar to Finlay et al [4] he redesigned the cylinder head and block water jacket geometry to include higher coolant velocities in critical areas and adequate in other areas. He achieved higher BMEP (Brake Mean Effective Pressure), shorter warm up period and lower coolant pump power.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of an internal combustion engine coolant flow distribution

Qasemian

Keshavarz

2016

Teh. vjesn.

View full text Add to dashboard Cite

Original scientific paper Uniform cooling of all cylinders in an Internal Combustion Engine has been a continual challenge of many engineers and researchers. Different flow rate and velocity of coolant at similar locations of cylinders may cause some regions to be overcooled whereas some to be undercooled. In this study more uniform cooling engine is desired. To do this, at first the governing equations of the flow were solved 1D and 3D to obtain the velocity, pressure and temperature at various points of an existing engine numerically. Then Particle Image Velocimetry (PIV) method on a transparent cylinder head made of Plexiglas was used to validate the numerical simulations. After validation, in order to reach intelligent cooling, some strategies such as small modifications in the engine coolant inlet and outlet along with its flow rates were applied that resulted in more uniform cooling which in turn prevents any over and under cooling. Keywords: internal combustion engine; cooling; flow distribution; PIV (Particle Image Velocimetry) Eksperimentalna i numerička analiza raspodjele toka rashladnog sredstva u motoru s unutarnjim izgaranjemIzvorni znanstveni članak Ujednačeno hlađenje svih cilindara u motoru s unutarnjim izgaranjem predstavlja trajni izazov za mnoge inženjere i istraživače. Različiti tok i brzina strujanja rashladnog sredstva na sličnim mjestima u cilindrima može rezultirati prevelikim ili preslabim hlađenjem nekih mjesta. U ovom se radu želi dobiti motor s ujednačenijim hlađenjem. U tu su svrhu najprije riješene jednadžbe protoka 1D i 3D kako bi se dobili numerički podaci o brzini, tlaku i temperaturi na različitim mjestima postojećeg motora. Tada se primijenila metoda mjerenja brzine fotogramom čestica (Particle Image Velocimetry -PIV) kako bi se na providnom poklopcu glave cilindra izrađenom od pleksiglasa provjeravale numeričke simulacije. Nakon provjere, u svrhu postizanja odgovarajućeg hlađenja, primijenile su se neke strategije kao na primjer male modifikacije na ulazu i izlazu rashladnog sredstva u motor kao i brzine protoka sredstva, a to je rezultiralo ujednačenijim hlađenjem, dakle onemogućavanjem prevelikog ili premalog hlađenja.Ključne riječi: motor s unutarnjim izgaranjem; hlađenje; raspodjela toka; mjerenje brzine fotogramom čestica (PIV)

show abstract

“…Investigations on engine cooling has been performed since early in the 19th century [24][25][26][27]. In 1958, Kling proposed a method for guiding radiator selection, which adopted a experiential design method to maintain the internal combustion engine body operation within the proper temperature range [28].…”

Section: Basic Engine Coolingmentioning

confidence: 99%

Advances in Integrated Vehicle Thermal Management and Numerical Simulation

et al. 2017

View full text Add to dashboard Cite

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).

show abstract

The Application of Precision Cooling to the Cylinder-Head of a Small, Automotive, Petrol Engine

Cited by 32 publications

References 7 publications

Pressure drop, heat transfer, critical heat flux, and flow stability of two-phase flow boiling of water and ethylene glycol/water mixtures - final report for project "Efficent cooling in engines with nucleate boiling."

Pressure drop, heat transfer, critical heat flux, and flow stability of two-phase flow boiling of water and ethylene glycol/water mixtures - final report for project "Efficent cooling in engines with nucleate boiling."

Experimental and numerical study of an internal combustion engine coolant flow distribution

Advances in Integrated Vehicle Thermal Management and Numerical Simulation

Contact Info

Product

Resources

About