Sensitivity Analysis of Heavy Vehicle Air Brake System to Air Leakage

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Saeid Bagherpour ◽  
Mohsen Rezaeian Akbarzadeh ◽  
Saeed Mouloodi
Keyword(s):  
Sensitivity Analysis ◽  
Brake System ◽  
Heavy Vehicle ◽  
Air Leakage ◽  
Air Brake System

scholarly journals Research on double tower dryer based on air brake system of rail vehicle

2021 ◽  
Vol 1948 (1) ◽  
pp. 012120
Author(s):  
BuDu Xu ◽  
Xuan Zhang ◽  
ShiXi Zhang ◽  
QingXuan Li ◽  
XiaoYu Zhu
Keyword(s):  
Brake System ◽  
Rail Vehicle ◽  
Air Brake System

scholarly journals PERANCANGAN ALOKASI PENYIMPANAN DI GUDANG BAHAN BAKU PADA DIVISI ALAT PERKERETAAPIAN PT PINDAD (PERSERO) UNTUK MENGURANGI WAKTU DELAY MENGGUNAKAN PENDEKATAN ANALISIS FSN DAN CLASS BASED STORAGE POLICY

2016 ◽  
Vol 3 (03) ◽  
pp. 48 ◽  
Author(s):  
Yurinda Amalia ◽  
Ari Yanuar Ridwan ◽  
Budi Santosa
Keyword(s):  
Value Added ◽  
Brake System ◽  
Value Stream Mapping ◽  
System Delay ◽  
Value Stream ◽  
Future State ◽  
Air Brake System

PT Pindad merupakan perusahaan manufaktur di bawah Badan Usaha Milik Negara (BUMN) yang memproduksi produk militer dan produk komersial. PT Pindad memiliki beberapa gudang, salah satunya adalah gudang Divisi Alat Perkeretaapian yang menyimpan berbagai bahan baku untuk memproduksi produk air brake system. Delay terjadi aktivitas storing dan picking, hal ini disebabkan karena adanya proses searching. Penempatan produk secara random oleh operator, menyebabkan alokasi penyimpanan SKU pada tempat penyimpanan tidak tertata rapi dan teratur. Langkah awal yang dilakukan adalah memetakan seluruh proses bisnis dan aktivitas yang terdapat pada gudang Divisi Alat Perkeretaapian PT Pindad dengan menggunakan value stream mapping (VSM) dan process activity mapping (PAM) sehingga didapatkan waktu proses dan value dari masing-masing aktivitas. Untuk itu dilakukan alokasi penyimpanan produk agar mengurangi waktu non value added dengan pengklasifikasian menggunakan analisis FSN, kemudian dilakukan slotting dan zonafikasi untuk menentukan area penempatan barang untuk-untuk masing-masing SKU berdasarkan klasifikasi. Setelah dilakukan pengklasifikasian, slotting dan zonafikasi, maka langkah selanjutnya adalah merancang future state map perancangan usulan, sehingga didapatkan disimpulkan waktu delay menurun 22% dari total waktu keseluruhan waktu proses yaitu 846,26 detik atau 14,10 menit, dan penurunan persentase non value added sebesar 17%.

Development of Diagnostic Algorithms for an Air Brake System: Theory and Implementation

2011 ◽  
Author(s):  
Sandeep Dhar ◽  
Swaroop Darbha ◽  
K. R. Rajagopal
Keyword(s):  
Motor Vehicle ◽  
Brake System ◽  
Chamber Pressure ◽  
Vehicle Safety ◽  
Brake Pad ◽  
Safety Standard ◽  
Brake Pressure ◽  
Brake Application ◽  
Air Brakes ◽  
Air Brake System

In this paper, we consider the problem of designing an algorithm for estimating the stroke of a pushrod of the air brake system. The stroke of pushrod directly relates to the braking force available at the wheels and also affects the response time. The longer the stroke, the volume available for expansion is larger and correspondingly, the response is slower. The stroke depends on the clearance between the brake pad and the drum, which can vary due to variety of factors such as thermal expansion of drum and mechanical wear. Typical safety inspections of air brakes include the measurement of the stroke of the pushrod of each brake chamber. Regulations on trucks such Federal Motor Vehicle Safety Standard (FMVSS) 121 require the inspection to be carried out at 90 psi supply pressure and at full brake application. The evolution of the brake pressure depends on the stroke of the pushrod and the area of the treadle valve, which is controlled by the driver. The treadle valve meters compressed air from the supply reservoir to the brake chamber. The proposed scheme requires the measurement of pressure and a model for predicting the evolution of brake chamber pressure in response to full application of the brake (brake pedal is fully depressed). We experimentally corroborate the effectiveness of the proposed algorithm.

scholarly journals A New Calculating Method of Pressure Response Time of Pneumatic Brake Pipe Based on Experiments

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Zhiqiang Gu ◽  
Shiyu Hu ◽  
Fan Yang ◽  
Rui Yang ◽  
Jian Hua
Keyword(s):  
Response Time ◽  
Initial Pressure ◽  
Pressure Response ◽  
Brake System ◽  
Tube Length ◽  
Analysis Method ◽  
Pipe Length ◽  
Correlation Degree ◽  
Gray Correlation ◽  
Air Brake System

Air brake system is one of the common braking methods for buses and trucks; its excellent performance guarantees the safety of the vehicle and the stability of the braking. As an important part of the pneumatic brake system, the brake pipe is an important factor influencing the pressure response time of the pneumatic brake system. Based on the exploratory experiment of pneumatic brake pipe, the influence of pipe length, pipe diameter, inlet sonic conductance, initial pressure, and supply pressure on pipe pressure response time was analyzed by fuzzy gray correlation analysis method. The results show that tube length is the most important factor affecting the pressure response time. Combined with the analysis results of gray correlation degree, the experimental scheme of the response time of the pneumatic brake pipe was designed by the response surface experimental design method. Based on the multiparameter analysis method, the influence of the experimental parameters on the pipe pressure response time was analyzed. Based on the experimental data, the form of calculation formula is derived by dimension analysis method, which provides a theoretical basis for the selection of pneumatic brake pipes and the design of air brake system.

scholarly journals Linear-Quadratic Tracking Control of a Commercial Vehicle Air Brake System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 149741-149750
Author(s):  
Dawei Hu ◽  
Gangyan Li ◽  
Guoming Zhu ◽  
Zihao Liu ◽  
Ming Tu
Keyword(s):  
Tracking Control ◽  
Commercial Vehicle ◽  
Brake System ◽  
Linear Quadratic ◽  
Linear Quadratic Tracking ◽  
Air Brake System ◽  
Linear Quadratic Tracking Control ◽  
Quadratic Tracking

Diagnosing the air brake system of commercial vehicles

2006 ◽  
Author(s):  
S.C. Subramanian ◽  
S. Darhha ◽  
K.R. Rajagopal
Keyword(s):  
Brake System ◽  
Commercial Vehicles ◽  
Air Brake System

scholarly journals Squeal Frequency of a Railway Disc Brake Evaluation by FE Analyses

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
F. Cascetta ◽  
F. Caputo ◽  
A. De Luca
Keyword(s):  
Sensitivity Analysis ◽  
Finite Element ◽  
Experimental Tests ◽  
Numerical Approach ◽  
System Stability ◽  
Brake System ◽  
Physical Parameters ◽  
Disc Brake ◽  
Complex Eigenvalues ◽  
The Stability

This paper deals with the development of a numerical model, based on the Finite Element (FE) theory for the prediction of the squeal frequency of a railway disc brake. The analytical background has been discussed and presented, as well as the most efficient methods for evaluating the system stability; the attention has been paid particularly to the complex eigenvalues method, which has been adopted within this paper to investigate the railway disc brake system. Numerical results have been compared with measurements from experimental tests in order to validate the proposed numerical approach. At the end of this work, a sensitivity analysis, aimed at understanding the effects of some physical parameters influencing the stability of the brake system and the squeal propensity, has been carried out.

Sign in / Sign up

Export Citation Format

Share Document