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A Novel Mechanism for Piston Deactivation Improving the Part Load Performances of Multi Cylinder engines

A Novel Mechanism for Piston Deactivation Improving the Part...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Alberto Boretti Joseph Scalzo Missouri University of Science and Technology RollaMO.USA University of Ballarat BallaratVICAustralia

Cylinder deactivation has been proposed so far for improved part load operation of large gasoline *** all this application,the cylinder deactivation has been achieved keeping the intake and exhaust valves closed for a particular cylinder,with pistons still following their *** paper presents a new mechanism between the piston and the crankshaft to enable selective deactivation of pistons,therefore decoupling the motion of the piston from the rotation of the *** reduced friction mean effective pressure of the new technology enables the use of piston deactivation in large engines not necessarily throttle controlled but also controlled by quantity of fuel *** of performance simulations are proposed for V8 gasoline and Diesel engines producing significant savings during light operation,larger for the gasoline but still substantial for the Diesel.

关键词： internal combustion engines Fuel economy Cylinder deactivation Part load

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11L Diesel Engine to Meet China V with Doc

11L Diesel Engine to Meet China V with Doc

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Pengcheng Wang Jiangwei Liu Fang Hu Zhenbo Xu Zhong Wang Huayu Jin Liu Yu Xinchun Niu Fanchen Meng PAW RDC

Environmental protection is the key issue in the whole *** legislation is pushing the engine technique forward more and *** heavy duty diesel engine the fuel economy is enhanced greatly since the introduction of after treatment *** the basic engine performance still goes further since the appearance of the advanced components and CAE lean *** this paper based on the combination of CFD and experimental test 11 L diesel engine meets China V standards with only DOC,which has competitive fuel efficiency compared with vSCR solution.

关键词： Heavy duty Diesel Optical combustion CFD

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Citybus Microtrips Classification Using the Data Envelopment Analysis（DEA）Method Applied on Portable Emissions Measurement System（PEMS）Experimental Data

Citybus Microtrips Classification Using the Data Envelopment...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Jerzy Merkisz Arkadiusz Barczak Jacek Pielecha Institute of combustion engines and Transportation.Poznan University of Technology.Poznan.Poland

The standard DEA models were all formulated for desired inputs and ***,in the real-life applications there frequently exist also undesired inputs and/or *** problem is how to treat undesirable outputs jointly produced with desirable *** of the undesirable outputs is equal to the saying that they have no value in the final evaluation and may provide misleading *** is therefore necessary to credit DMUs for their provision of desirables and penalize them for their provision of *** purpose of this chapter is to evaluate the applicability of the Data Envelopment Analysis methods in the efficiency assessment of city bus microtrips（trips of the bus between two consecutive bus stops）treated as decision making *** aim is to help transportation authorities to not only maximize beneficial outputs,such as for example vehicle speed,but also to reduce the production of undesirable（or negative）outputs in the form of vehicle pollution emissions.

关键词： DEA PEMS Microtrip Pollution Emissions

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Study on a Test Procedure for the NOx Emission of Heavy Duty Vehicle

Study on a Test Procedure for the NOx Emission of Heavy Duty...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Mengliang Li Yueyun Xu Hui Guo Maodong Fang Long Sun China automotive Technology and Research Centre

The NO emission of 19 heavy duty vehicles compliance with China stage IV emission standard had tested by Portable Emission Measurement System in the real world and gained the second-by-second *** test data is processed according to *** the local driving cycle is also much difference from that in the United States,over 70%data over the NTH *** number of the NTH events is fewer and it is hard to estimate these vehicles emission *** the NTH zone and shorten the NTH event time to adapt to actual cycle conditions can make more the cycle points falling into NTH zone,and the effective NTH events also *** paper reports a work on developing a new NTE zone and NTH event time beseemed the local actual driving *** the new procedure can clearly distinguish that vehicles emission is lower or higher than emission standard.

关键词： Diesel engine NOX emission NTE Driving cycle HDV

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System Design for a Direct-Boost Turbocharged SI Engine Using a Camshaft Driven Valve

System Design for a Direct-Boost Turbocharged SI Engine Usin...

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fisita 2012 world automotive congress--volume 3:Future automotive Powertrains

作者： Christoph Voser Christopher Onder Lino Guzzella Institute for Dynamic Systems and Control ETH ZrichZurichSwitzerland

Downsizing and turbocharging for retaining the maximal power is a common approach to improve the fuel economy of SI internal combustion *** to the additional turbocharger dynamics,small engines suffer from a significant time lag of the torque *** injection of pressurized air into the combustion chamber during the compression phase,also called direct-boost,can recover the *** far,expensive and complex fully variable valve-trains have been proposed for the air exchange between the air tank and the combustion *** this paper,a direct-boost system using a camshaft driven valve is *** appropriate control strategy is *** transient performance of the complete system and the feasibility of the control strategy are demonstrated on a modified0.75 1 turbocharged two-cylinder test bench engine.

关键词： Downsizing Turbocharging Turbo lag-Driveability Direct-boost

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Modular Unification as One of the Possible Directions of Innovations in the automotive Industry

Modular Unification as One of the Possible Directions of Inn...

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fisita 2012 world automotive congress--volume 10：Chassis Systems and Integration Technology

作者： Tagir Gadelshin Moscow State University of Mechanical Engineering（MAMI） MoscowRussia

The aim of this research is to find ways to reduce the cost of designing,manufacturing and maintenance of *** research was conducted at the level of automobile *** architecture consists of *** is proposed to be made through choosing the equity and alignment of external parameters of the *** research of different automobile architectures showed the opportunity of applying of the module unification methods to reduce costs for designing,manufacturing and maintenance of *** way of such unification can be used for vehicles with internal combustion engines,hybrid engines and electric *** the technology of modular unification can be performed on the basis of existing production systems and ***,introduction of this technology does not require large *** and extensive collaboration in the world automotive industry requires a search for ways to improve the efficiency of these *** all,the ratio of benefits from the vehicle usage to its cost would not *** problems can be solved through the use of modular *** these challenges requires the collaboration in the community level of automotive *** and foremost,this is a wide discussion of issues and making the decisions on organizational and legal arrangements.

关键词： Vehicle architecture Modular unification Globalization Economic efficiency

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The NOx Conversion Efficiency Depending on the Deviation of SCR System Components and Amount of Soot Loading in c-DPF

The NOx Conversion Efficiency Depending on the Deviation of ...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Hyoung Sik Kim Jong Ik Jeon Chang Eun Choi Won Kun Kim Hyundai-Kia Motors Seoul.Korea

In this study,the parameters of SCR system which have an effect on NOx conversion efficiency have been *** NOx sensor located in front of SCR catalyst and the urea injector dosing urea solutions to the SCR catalyst play important roles in NOx conversion efficiency of SCR ***,NOx conversion efficiency has been decreased when NOx sensor reads engine out NOx emissions lower than the actual engine out NOx emissions,because it brings about the lack of urea injection ***,the NOx conversion efficiency has been also decreased when urea injector doses less amount of urea solution than the system ***,Applying the aged catalyst system（DOC,***）and the soot loading amount in c-DPF also have effects on the change of NOx conversion efficiency.

关键词： SCR NOx sensor Uroa dosing injector NO2/NOx ratio CRT

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A Study on Regulated and Unregulated Emissions from a Set of Five Gasoline and Ethanol Fueled Motorcycles

A Study on Regulated and Unregulated Emissions from a Set of...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Renato Penteado Luiz Carlos Daemme Jurgen Krahl Fatima Zotin Institute of Technology for Development—LACTEC CuritibaBrazil P&K Consulting CuritibaBrazil Coburg University of Applied Sciences and Arts.Coburg Germany State University of Rio de Janeiro—UERJ.Rio de Janeiro.Brazil

The objective of this study was to investigate regulated and unregulated emissions from four motorcycles fueled with gasoline and one Ilex fuel motorcycle fueled with three different gasoline/ethanol *** emissions（*** NOx）have been measured with 7000 series Horiba *** emissions（formaldehyde,acetaldehyde and ammonia）were measured with a SESAM series AVL Fourier Transform Infrared Analyzer（FTIR）.Tests were conducted over a chassis dynamometer according to the 97/24/KC drive *** and post catalytic（pre-cat and post-cat）converter data were *** results showed that catalytic converters designed to reduce regulated emissions from gasoline-powered motorcycles produce ammonia emissions as a by-product of catalytic *** results regarding pre-cat and post-cat conversion aldehydes were analyzed and *** main conclusion was that catalyticconversion reduces aldehydes and regulated emissions on the tailpipe but increases ammonia emission levels significantly.

关键词： Emissions Ammonia Aldehydes Motorcycle Flex fuel

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Engine Oil Antioxidant Selection for Delivering Superior Oxidation and Deposit Control Protection

Engine Oil Antioxidant Selection for Delivering Superior Oxi...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Bo Liu Vince Gatto Albemarle Chemicals Albemarle Corporation PasadenaUSA

Engine oil formulators face a number of challenges when developing modern passenger car motor *** recent years greater performance demands have been placed on engine oils to deliver superior oxidation and deposit control *** has occurred concurrently with the mandated reductions of phosphorus driven by concerns to protect engine catalyst *** has forced the use of lower levels of zinc dialkvldithiophosphate（ZDDP）in modem engine *** is known to be one of the most cost effective antioxidants *** in its use must be compensated for by the use of other phosphorus-free antioxidants.A challenge exists for the engine oil formulators to identify the most cost effective alternatives to ZDDP while at the same time utilizing inexpensive and rapid,yet meaningful bench test *** paper looks at the use of a bulk oil oxidation test（AlbOT）,pressurized differential scanning calorimetry（PDSC）,the Caterpillar Micro-Oxidation Test（CMOT）and the Thermo-Oxidation Engine Oil Simulation Test（TEOST-MHT）to evaluate and rank the robustness of passenger car engine oil performance for both oxidation protection and deposit control *** tests are utilized to screen a number of antioxidant systems in engine oils formulated with 500 ppm of phosphorus derived from *** antioxidant components are selected from a series of commonly used and commercially available materials plus some developmental *** components include a molybdenum compound,alkylated diphenylamines,hindered *** new developmental and experimental multi-functional *** performance of these fullyformulated engine oils are ranked in the selected bench tests in order to highlight the benefits of each antioxidant system under *** activity studies are carried out on a select group of tests in order to gain further insight as to how antioxidant chemical structure impacts oxidation and deposit control *** res

关键词： Antioxidants Engine oils Oxidation Deposit control Bench test

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A Study of SIC-Nanoparticles Porous Layer Formed on SIC-DPF Wall for Soot Oxidation

A Study of SIC-Nanoparticles Porous Layer Formed on SIC-DPF ...

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the fisita 2012 world automotive congress--volume 1：advanced internal combustion engines

作者： Keita Ishizaki Shinichi Tanaka Atsushi Kishimoto Masamichi Tanaka Naoki Ohya Nobuhiro Hidaka Automobile R&D Center.Honda R&D Co. LtdTochigiJapan New Technology Research Laboratory.Sumitomo Osaka Cement Co. LtdChibaJapan

The pore structure of DPF is known to have a significant effect on filtration efficiency,pressure drop,and soot *** is reported that the formation of a nanoparticle porous layer on the surface of the DPF inlet wall promotes soot oxidation[1-3].However,the correlation between pore size in the nanoparticle layer and soot oxidation performance,the effect of the layer in actual use environments,and the oxidation mechanism involved have not yet been *** research discussed in this paper therefore formed SiC nanoparticle porous layers of various pore sizes on the inlet wall surfaces of SiC-DPF(creating what will be termed"NPLDPF"here)using the dip-coating method|4|.The NPL thickness was set at 20μm to help enable uniform coating samples to be *** regard to filter pressure drop without soot loading,results for a bare DPF and a Pt/γ-AlO-eoated DPF(catalyzed DPF:Pt=1 g/L)were virtually *** the NPL-DPF,pressure drop increased as pore size was *** contrast,in the case of pressure drop following soot loading(3 g/L).despite the fact that results for pressure drop for the NPL-DPF were higher than those for the bare DPF,they were lower than those for the catalyzed *** is possible to stop deep-bed filtration by forming a nanoparticle porous layer on the surface of the DPF inlet wall[1.5].With regard to soot oxidation performance,the T80 of an NPL-DPF(NPL pore size=350 nm)was found to be40%lower than that of a bare DPF and identical to that of a catalyzed *** addition,reducing the NPL pore size enhanced soot oxidation performance.X-ray photoelectron spectra(XPS),transmission electron microscopy(TEM),andhydrogen temperature-programmed desorption(H2-TPD)results indicated that the vSiC nanoparticle surface was covered by a 5 am SiO oxide *** was found that these oxidized SiC nanoparticles desorbed oxygen at around 450℃.This desorbed oxygen promoted the oxidation of diesel *** addition,the filtration efficiency of the NPL-DPF wi

关键词： Diesel vehicle Partieulate-emissions Paniculate filters Sootoxidation Desorhed oxygen

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