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"By forming the link between the road surface and the vehicle, the chassis plays a key role in enhancing vehicle dynamics and ride comfort. With its control systems, it provides the basis for the further development of driver assistance systems which support the driver in the task ofdriving the vehicle. This applies to an even greater extent to autonomous vehicles. Electromechanical steering and steerby-wire systems are one solution available. At the sametime, the brake system as a safety component needs to be developed in such a way that it fulfills the requirements of powertrain hybridization and electrification."

"This book examines the driving dynamics of harvesting machines with large harvesting heads. It looks at how to efficiently use these machines. The author explores a common problem that hinders machine performance when harvesting with very large headers. He deals with concepts for reducing the undesired effects of vehicle dynamics when using these machines. With the steadily increasing capacity of harvesting machines, the working widths of the harvesting heads get wider and the headers get heavier. It has become essential with these giant headers to use header height sensors and header control systems to avoid the headers from being run into the ground when encountering elevation changes in the terrain. A fundamental limitation of the viable speed of header height adjustments arises from the combination of the wider and heavier headers with soft agricultural tires. The current solution to find an appropriate speed of header height adjustments is to perform a header calibration whenever a new header is attached to the machine and to endow the machine operator with the capability to tweak the speed of adjustments manually. The result of an inappropriate speed of height adjustments is a reduction in overall productivity and an under-utilization of the harvesting machine. The author looks at ways to prevent this. He offers detailed modeling of the vertical dynamics including dynamic wheel loads. In addition, the book contains results from simulations and machine tests."

"This volume includes selected and reviewed papers from the 4th International Congress of Automotive and Transport Engineering, held in Cluj, Romania, in September 2018. Authors are experts from research, industry and universities coming from 14 countries worldwide. The papers are covering the latest developments in automotive vehicles and environment, advanced transport systems and road traffic, heavy and special vehicles, new materials, manufacturing technologies and logistics, accident research and analysis and innovative solutions for automotive vehicles.The conference is organized by SIAR (Society of Automotive Engineers from Romania) in cooperation with FISITA. "

"ABSTRAKSalah satu komponen paling penting pada kendaraan adalah sasis. Sasis berfungsi sebagai penopang berbagai kompartemen pada kendaraan agar dapat berfungsi dengan baik. Tim lomba mobil hemat energi Universitas Indonesia memiliki pengalaman dalam membuat sasis monocoque pada tahun 2016, berdasarkan hasil pengalaman sasis monocoque memiliki kelebihan lebih ringan dan memiliki waktu penggunaan yang lebih lama dari sasis tangga. Untuk mengurangi biaya perawatan dan mengurangi bobot kendaraan sasis monocoque pada tipe urban menjadi pilihan yang terbaik saat ini. Studi ini bertujuan membandingkan antara sasis monocoque dan sasis tangga. Pengujian beban yang diberikan sesuai dengan regulasi Shell Eco-Marathon, beban penuh kendaraan, beban lateral, dan beban torsional pada bagian depan dan belakang. Hasil dari pengujian beban berupa deformasi maksimal, tegangan maksimal Von-Mises, dan faktor keselamatan. Desain sasis menggunakan perangkat lunak Autodesk Inventor, penetapan struktur komposit menggunakan Ansys ACP, dan simulasi beban menggunakan Ansys Static Structural. Hasil desain dan pengujian beban menunjukkan bahwa sasis monocoque memiliki bobot sebesar 8.6 Kg dan sasis tangga sebesar 12.7 Kg. Berdasarkan hasil dari tujuh jenis pembebanan yang diberikan, sasis monocoque unggul pada pembebanan monocoqubar (700 N) arah horizontal, beban lateral, beban torsional depan, dan beban torsional belakang. Sedangkan sasis tangga unggul pada pembebanan rollbar (700 N) arah vertikal, beban pada setiap titik sabuk pengaman sebesar 200 N, dan beban penuh kendaraan. Namun pada faktor keselamatan, sasis tangga melebihi batas maksimum pada pembebanan rollbar arah horizontal, dan torsional depan dan belakang yaitu 0.0035, 0.01206873 dan 0.02397602. Sehingga dapat disimpulkan bahwa sasis monocoque lebih baik dari pada sasis tangga, dan memiliki bobot yang lebih ringan. Selain itu kekuatan sasis monocoque dapat dimaksimalkan dengan menentukan arah lamina berdasarkan arah bobot pada setiap kompartemen.

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ABSTRACT

One of the most important components in a vehicle is the chassis. The chassis functions as a support for various compartments on the vehicle so that it can function properly. The University of Indonesia energy-saving car race team has experience in making monocoque chassis in 2016, based on the results of the experience the monocoque chassis has lighter advantages and has a longer usage time than the ladder chassis. To reduce maintenance costs and reduce the weight of monocoque chassis vehicles in urban types is the best choice at this time. This study aims to compare the monocoque chassis and the ladder chassis. Load testing is given under Shell Eco-Marathon regulations, full vehicle load, lateral loads, and torsional loads on the front and rear. The results of the load testing are maximum deformation, maximum Von-Mises stress, and safety factors. The chassis design uses Inventor software, the determination of composite structures using Ansys ACP, and load simulation using Ansys Static Structural. The results of design and load testing showed that the monocoque chassis weighed 8.6 kg and a ladder chassis of 12.7 kg. Based on the results of the seven types of loading, the monocoque chassis excels at horizontal rollbar (700 N) loading, lateral loads, front torsional loads, and rear torsional loads. Whereas the ladder chassis excels at vertical loading of the bar (700 N), the load at each point of the seat belt is 200 N, and the full load of the vehicle. But on the safety factor, the ladder chassis exceeds the maximum limit on the horizontal direction of the rollbar loading, and the front and rear torsions are 0.0035, 0.01206873, and 0.02397602. So it can be concluded that the monocoque chassis is better than the ladder chassis, and has lighter weight. Besides, the strength of the monocoque chassis can be maximized by determining the direction of the lamina based on the direction of the weight in each compartment."

"ABSTRAK

Pertumbuhan penduduk yang tinggi menimbulkan dampak pada berbagai aspek kehidupan terutama kemacetan. Berbagai solusi mengatasi kemacetan sudah banyak ditawarkan. Namun, tetap saja kemacetan masih merupakan masalah yang belum terselesaikan. Bayangkan ada sebuah mobil yang dapat beroperasi di udara juga seukuran mobil. Namun permasalahan selanjutnya adalah bagaimana memanfaatkan ruang terbatas pada mobil sebagai penyimpanan bahan bakar agar kendaraan ini dapat menempuh jarak jauh. Tanpa menambah dimensi dan berat kendaraan, efisiensi dapat diraih dengan mengurangi drag. Perancangan sistem retraksi roda dapat mengurangi parasite drag hingga 24. Perancangan ini juga berbicara mengenai bagaimana sebuah mekanisme retraksi dapat mengakomodasi seluruh sistem roda termasuk suspensi, wishbone, sistem pengaman dan sistem kemudi pada roda depan. Hasil dari rancangan ini menghasilkan kebutuhan akan sebuah pompa hidrolik dengan tekanan minimal 11.191 bar dan laju alir 0.136 lpm.

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ABSTRACT

High population growth has an impact on various aspects of life, especially traffic congestion. Many solutions to overcome traffic congestion have been offered. However, traffic congestion is still an unsolved problem. Imagine there is a car that can operate on sky as well with the size of a car. But the next problem is how to maximize the limited space of vehicle as fuel storage so that it can travel a long distance. Without increasing size and weight to the vehicle, efficiency can be achieved by reducing drag. Designing a wheel retraction system can reduce parasite drag up to 24. This design also talks about how a retraction mechanism can accommodate the entire wheel system including suspension, wishbone, safety system and steering system on the front wheels. The result of this design is a hydraulic pump with minimum pressure of 11.191 bar and flow rate of 0.136 lpm."

"These proceedings collect selected papers from the 8th International Conference on Green Intelligent Transportation Systems and Safety held in Changchun on July 1-2, 2017. The selected works, which include state-of-the-art studies, are intended to promote the development of green mobility and intelligent transportation technology to achieve interconnectivity, resource sharing, flexibility and higher efficiency. They offer valuable insights for researchers and engineers in the fields of Transportation Technology and Traffic Engineering, Automotive and Mechanical Engineering, Industrial and Systems Engineering, and Electrical Engineering."

"ABSTRAKPerancangan kendaraan ini adalah untuk memenuhi kebutuhan pendidikan di bidang otomotif sebagai alat peraga pendidikan yang menarik khususnya kendaraan darat roda empat. Perancangan ini dilakukan dengan membuat model tiga dimensi dan di simulasikan menggunakan software Autodesk Inventor dan SolidWorks. Kendaraan ini dirancang dengan rangka dasar dari mobil kit Lotus atau Caterham Seven yang memiliki rangka spaceframe dengan beberapa modifikasi untuk dapat menyesuaikan dengan part dari kendaraan lokal sebagai donor. Part-part dari kendaraan donor digambar dan disatukan dalam software dan dilakukan analisa pembebanan menggunakan software tersebut. Suspensi depan kendaraan ini dirancang untuk dapat memiliki kebebasan yang lebih pada pengaturan geometrinya agar dapat lebih dipelajari pengendaliannya. Suspensi depan kendaraan ini menganut sistem double wishbone yaitu menggunakan dua lengan kontrol untuk kebebasan yang besar, dan rigid axle pada suspensi belakang untuk kemudahan pencarian donor. Dari perancangan tersebut didapatkan camber maksimum pada kondisi normal sebesar + 40 dan minimum sebesar -30, serta dalam kondisi ekstrem sebesar +14.640 dan -160, untuk caster didapatkan antara -4.150 dan +6.580, ketinggian roll center depan kendaraan ini dapat diatur antara 0 mm sampai 189.76 mm dari permukaan tanah. Simulasi pembebanan menggunakan komputer dilakukan dalam perancangan ini dengan menerapkan beberapa parameter dalam penggunaan kendaraan ini. Hasil dari simulasi tersebut menunjukkan bahwa rancangan yang dibuat sudah cukup kokoh.

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ABSTRAKThe design of these vehicles is to meet the educational needs in the automotive field as educational props of four-wheeled land vehicle. This design is done by creating a three-dimensional model and simulated using the software Autodesk Inventor and SolidWorks. The vehicle was designed with the basic framework of the Lotus or Caterham Seven car kit that has a spaceframe type frame with some modifications to meets to the local vehicles part as the donor. The parts of the donor vehicle drawn and assembled in the software and stress analyzed using that software. The front suspension of this vehicle is designed to have more degree of freedom in the geometric arrangement so its handling can be learned. The vehicle's front suspension adopts a double wishbone that use two control arms for great freedom, and a rigid axle rear suspension for ease of finding a donor. The design of the maximum camber obtained under normal conditions of + 40 and minimum of -30, and in extreme conditions of +14.640 and -160, for the caster found between -4.150 and +6.580, the height of the front roll center of this vehicle can be set between 0 mm up to 189.76 mm from the ground. Loading simulations using a computer made in this design by applying some of the parameters in the use of these vehicles. The results of the simulations showed that the design created is rigid."

"Tujuan dari rencana pembangunan Bandara Internasional Jawa Barat Kertajati (BIJB Kertajati), tidak hanya berfungsi sebagai simpul transportasi, akan tetapi juga sebagai motor penggerak ekonomi. Namun sejak pertama beroperasi tahun 2018, jumlah penumpang jauh dari target (sepi) dan akhirnya diberhentikan pengoperasiannya, mulai April 2020 hingga saat ini. Studi ini menggunakan metodologi dinamika sistem untuk melihat Interaksi Sistem Transportasi dan Tata Guna Lahan. Untuk memahami upaya yang paling tepat dilakukan agar BIJB Kertajati dapat tetap tumbuh, berkembang dan berkelanjutan, maka dibangun model BIJB for Optimization International Airport (BONITA). Pengembangan Interaksi Rebana Metropolitan yang berfokus dalam pengembangan kawasan industri dan pembangunan sistem transportasi Jawa Barat, yang diharapkan dapat meningkatkan pertumbuhan ekonomi. Pertumbuhan ekonomi di wilayah ini akan berdampak pada peningkatan passenger demand dan cargo demand yang akan meningkatkan utilisasi pemanfaatan BIJB Kertajati. Berdasarkan simulasi menggunakan Model BONITA dengan skenario Business As Usual (BAU), Pessimistic, Moderate dan Optimistic menunjukkan bahwa perkembangan utilisasi BIJB Kertajati sangat dipengaruhi (interdependent) oleh Interaksi Sistem Transportasi dan Tata Guna Lahan yang akan meningkatkan peran dan pemanfaatan BIJB Kertajati. Ditemukan bahwa BIJB Kertajati layak dikembangkan menjadi bandara kargo.

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The purpose of the West Java Kertajati International Airport (BIJB Kertajati) development plan is to serve not only as a transportation node, but also as driving force for the economy. However, since it began operating in 2018, the number of the passenger is far from the target (quiet) and its operation has finally been stopped from April 2020 to the present. System Dynamic methodology is used in this study to see the Interaction of Transportation Systems and Land Use. To understand the most suitable effort to make so that BIJB Kertajati can continue to grow, develop and be sustainable, model BIJB for Optimization International Airport (BONITA) was built. Development of Rebana Metropolitan Interaction focus in developing the growth of industrial area and Development of the West Java Transportation System, which is expected to increase economic growth. The growth of economic in this region will have an impact to enhance passenger and cargo demand, resulting in increased utilization function of BIJB Kertajati. Based on the simulation using the BONITA Model with Bussiness as Usual (BAU), Pessimistic, Moderate, and Optimistic Scenario, it showed that the development of BIJB Kertajati Utilization is strongly influenced (interdependent) by the Interaction of Transportation Systems and Land Use, which will increase the role and utilization of BIJB Kertajati. It was found that BIJB Kertajati is eligible to be developed as cargo airport."

"This book focuses on the two-phase flow problems relevant in the automotive and power generation sectors. It includes fundamental studies on liquid-gas two-phase interactions, nucleate and film boiling, condensation, cavitation, suspension flows as well as the latest developments in the field of two-phase problems pertaining to power generation systems. It also discusses the latest analytical, numerical and experimental techniques for investigating the role of two-phase flows in performance analysis of devices like combustion engines, gas turbines, nuclear reactors and fuel cells. The wide scope of applications of this topic makes this book of interest to researchers and professionals alike."