Development of Alternative Steering Models for EV Bus: a Preliminary Study on the Conversion of Hydraulic to Electric Power Steering

Eastern-European Journal of Enterprise Technologies 2021, 3(1 (111), 37–46. https://doi.org/10.15587/1729-4061.2021.227329

10 Pages Posted: 10 Aug 2021

See all articles by Nazaruddin Nazaruddin

Nazaruddin Nazaruddin

Universitas Indonesia Depok

DA Sumarsono

Universitas Indonesia Depok

Mohammad Adhitya

Universitas Indonesia Depok

Ghany Heryana

Universitas Indonesia Depok

Rolan  Siregar

Darma Persada University

Sonki Prasetya

Universitas Indonesia Depok

Fuad Zainuri

State Polytechnic of Jakarta

Date Written: June 10, 2021

Abstract

This study aims to develop alternative steering models for the EV bus. The EV bus uses its energy source from the main 384 VDC 300 Ah battery and the secondary battery with a capacity of 25.8 VDC 100 Ah. The use of energy in this electric bus is divided into the main components, namely the BLDC motor as the main drive of 200 kW, 15 kW of air conditioning, 7.5 kW of hydraulic power steering, a compressor for the air braking system of 4 kW, and accessory components. The other is 2.4 kW. It is expected that this 7.5 kW electric power can be reduced by an electric system by up to 20 %. This research will study the steering system with an electric power system (EPS) to convert the hydraulic steering system (HPS). With this EPS system, it is hoped that controlling the vehicle’s motion towards the steer by wire will be easier. Initially, data were collected from the types of large vehicles from various well-known brands about the steering system used. A large commercial vehicle that purely uses EPS is not yet found. The model developed for EPS on this electric bus is through the reverse engineering method by redrawing all the components involved in the previous steering system. Because this type of EV bus is included in the upper mid-size class, this paper proposes two new EPS models, namely the addition of an assist motor on the drag link and on the steering rack. The links involved in this system are wheel drive, steering column, lower steering column, rack and pinion gear, assist motor, drop link, drag link, drop link extension, drag link extension, tie rod, knuckle, kingpin, tire, axle beam and several others. The values of stiffness, inertia, and damping of each link will affect the driver’s torque and the assist motor as a wheel speed function on this electric bus. The steering structure of the EV bus consists of a truss structure and a frame structure with a kinematic structure consisting of two four-bar linkages joined together

Keywords: assist motor, wheel drive, steering column, pinion, rack, vehicle speed, torsion motor, truss structure, frame structure, four-bar linkage

Suggested Citation

Nazaruddin, Nazaruddin and Sumarsono, DA and Adhitya, Mohammad and Heryana, Ghany and Siregar, Rolan  and Prasetya, Sonki and Zainuri, Fuad, Development of Alternative Steering Models for EV Bus: a Preliminary Study on the Conversion of Hydraulic to Electric Power Steering (June 10, 2021). Eastern-European Journal of Enterprise Technologies 2021, 3(1 (111), 37–46. https://doi.org/10.15587/1729-4061.2021.227329, Available at SSRN: https://ssrn.com/abstract=3885889

Nazaruddin Nazaruddin (Contact Author)

Universitas Indonesia Depok ( email )

West Java, 16424
Indonesia

DA Sumarsono

Universitas Indonesia Depok ( email )

West Java, 16424
Indonesia

Mohammad Adhitya

Universitas Indonesia Depok ( email )

West Java, 16424
Indonesia

Ghany Heryana

Universitas Indonesia Depok ( email )

West Java, 16424
Indonesia

Rolan  Siregar

Darma Persada University ( email )

Jakarta, 134500
Indonesia

Sonki Prasetya

Universitas Indonesia Depok ( email )

West Java, 16424
Indonesia

Fuad Zainuri

State Polytechnic of Jakarta ( email )

Jawa Barat, 16424
Indonesia

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