Papers by Sameer Rafiq Shah
FISITA World Congress, 2020
In this era of electrification, HEVs are mainly focused on weight and space saving. This is done ... more In this era of electrification, HEVs are mainly focused on weight and space saving. This is done to ensure the maximum size of the battery package on the vehicle. This situation demands for a drive by wire systems which makes the vehicle lighter as well as more spacious. This paper introduces a new type of In-Wheel suspension has been introduced in this paper. The problem of large suspension systems and its bulkiness were studied. Vehicle instability while driving and cornering was also stated. And the suspension's capability to handle uneven tyre wear which is caused due to improper or fixed camber angle was also addressed. The Novel In-Wheel Suspension is introduced in this paper which houses all the crucial parts of the suspension inside the rim of the wheel thus making it compact, lighter and sturdy. Parts were first designed by the principles of Machine Design, Kinematics and Mechanics of Materials. They were later modelled on Solid Edge ST7. Structural simulations was carried out on FEA Solver under highly strained conditions and also under dynamic loading and the results were satisfactory. A scaled prototype was made by manufacturing the parts on CNC machine. Later the suspension was assembled by brazing the parts together. The Impulse hammer technique was used to carry out the modal analysis which was used to study the damping characteristics of the suspension. Another innovation is introduced in this suspension which the Novel concept of Automatic Camber Control strategy which calibrates the camber angle of the wheel in real-time and greatly improves the performance as well as stability of the vehicle. The design process involved understanding the scaling down the size of the suspension without compensating the functionality of the suspension. The working prototype of the suspension was constructed and after rigorous testing which were carried out. It was found that the performance of suspension under low traction conditions was enhanced.
International Research Journal of Engineering and Technology (IRJET), 2020
Several cases of road accidents have been accounted in the past and have been investigated. The r... more Several cases of road accidents have been accounted in the past and have been investigated. The root cause of have been investigated in various cases of accidents like direct collision, driver negligence, component failure etc. and technologies have been developed to counter these conditions. Automotive companies have come up with technologies which predict an object, person or a vehicle in the Blind Spot Zone of the car. They give an indication to the driver and prevents lane shift. But certain technologies have limitations like driver override where objects like road block cones or railings have been identified in the blind spot zone and the driver can override the blind spot function and initiate lane shift. Sometimes due to the negligence of the driver, he/she fails to pay attention to the blind spot system warning and initiates lane shift and thus leads to accident. In this project, we are investigating the role of human factors which positively contributes to design of blind spot detection systems.
Whenever there is an emergency and patients are needed to be transported by means of ambulance to... more Whenever there is an emergency and patients are needed to be transported by means of ambulance to the hospitals, there always a delay observed in this process. This delay can be either extra time taken to find the patient's home; or time lost when ambulance is stuck in traffic or due to some other unavoidable reasons. This often complicates the health of the patient or sometimes results in death. To solve this problem, a self-driving ambulance equipped with on-board position, proximity and other sensors to allow easy travel in traffic. Its propulsion will be controlled by an ECU which is in turn controlled by a central Microprocessor which is connected to GPS. The vehicle is fed with pickup point and final destination i.e. hospital. This allows us to set the shortest route for travel via GPS. Based on the real time feed, the vehicle keeps a track of alternative routes and predicts further traffic congestion on its route. This allows vehicle to make decision to take a better alternative route and save time. The ambulance can either be powered by an IC Engine or an Electric Motor. The vehicle so selected for the job is now made to run on streets by GPS feeds and independent driving by microprocessor. The ECU controls driving, control and combustion conditions. When further jamming conditions are sensed, the traffic signals can control the flow of traffic such that it won't allow other vehicles to pass through it, after the ambulance and would make way for ambulance on main or alternative route. This would prevent ambulance getting stuck in traffic and hence providing easy passage for ambulance. The whole system requires integration of ECU, Microprocessor, Traffic Surveillance and signal light control, Live GPS feed and warning to further vehicles in the path.
SAE International, 2017
In an unavoidable event of a suspect being chased by police, there is high probability for the cr... more In an unavoidable event of a suspect being chased by police, there is high probability for the criminal to evade the police while driving his vehicle. At many instances, criminal escapes without leaving a trail behind and becomes untraceable. A new concept of Vigilance Assistance System Network (VASN) has been developed, which is spread across the city and helps in catching the escaping criminals. At every junction, the traffic-signals are installed with a microcontroller chip and these connected traffic signals form a network with distinct city areas demarcated on the map. The vehicle is installed with GPS and a RFID module on their ECU when it approaches any intersection or junction; they receive wireless signals from trafficsignals and transmit another registering signal to the traffic-light wirelessly through RFID. They register their basic information such as Vehicle Number, Driver Information, GPS coordinates and other Vehicle information such as vehicle speed, fuel level etc. The traffic surveillance team at the control room gets information about the running criminal and tracks the vehicle effectively through maps and initiates vigilance operations. If the GPS of car is disabled or if it fails, this vigilance system still works on RFID module chip which sends wireless signal to traffic-light microcontroller. This system can also be used to secretly track the location of any vehicle in smart cities by searching for a particular vehicle number. Also the details of the car type can be further enhanced by using the particular or the next upcoming traffic CCTV cameras so that a visual interpretation can be obtained.
SAE International, 2017
In any unlikely event of accidents or vehicle breakdown, there is accumulation of traffic which r... more In any unlikely event of accidents or vehicle breakdown, there is accumulation of traffic which results in road-blockage and causes in convenience to other vehicles. If this happens in remote areas, the accidents victims are left unattended and there is delay in providing emergency services. In case of traffic, it obstructs the entry of ambulance and rescue team which results in death of passengers. To prevent this mishap, a mechatronics based road block avoidance and accident alarming system is designed which is automated by the use of sensors. The roadblock is detected with the help sensors located at regular intervals on road. This input is given to a Local Control Unit (LCU) which is integrated on every road. Several such MCUs are connected to a Main Control Unit (MCU) which is located at the nearest police station. A single MCU covers the area administered by that police station. Additional CCTV cameras are present to give graphical view of accident. The MCU alerts the Traffic department, nearest Hospital and currently running ambulances for initiation of emergency services. There is also a group of small modular retractable robots which blocks the nearest entrance of the road to prevent further traffic accumulation. This paper shows the technology behind the this concept and its implementation
FISITA World Automotive Congress, 2016
Traffic conditions demand high precision driving. While driving in heavy or slow moving traffic c... more Traffic conditions demand high precision driving. While driving in heavy or slow moving traffic conditions, there exists an interrupted motion of vehicle during which speed is controlled continuously and involves frequent use of accelerator pedal. While operating at low speeds, the pedal is pressed by a small amount, enforcing the foot to remain in that position to control and maintain that speed. Continuous pedal operation leads to muscular pain and fatigue causing lack of control over the vehicle. Research in Vehicle Dynamics has led to development of Cruise Control, Power braking assisted by use of hydraulics and enhancement of conventional pedal by various spring guided mechanisms. These technologies apart from being accurate and effective, they have their own limitations which cause muscle fatigue. To solve this problem, a novel concept of Foot-resting Mechanism is designed and proposed for accelerator pedal to reduce muscle fatigue and enhance leg-body comfort. It also provides flexibility to adjust pedal operating conditions suitable to driver's convenience. This is totally a novel concept achieved by incorporating subsystems which functions accordingly to facilitate various features like Foot-Resting (FR), Variable Stiffness Control (VSC) and Speed-range Magnification (SRM). Variations in elongation are auto calibrated by servomotor through sensor outputs. The performance verification of design is simulated on Solid Edge ST7 and results obtained are further validated with the design.
International Journal of Engineering Research and Applications, 2022
To meet the demands of depleting fuel and prevent environmental pollution, an IC engine is design... more To meet the demands of depleting fuel and prevent environmental pollution, an IC engine is designed where Hydrogen is chosen as fuel which undergoes combustion with oxygen and does not emit harmful by-products. It is a clean fuel since its final product is water. This innovative concept involves use of hydrogen as the fuel in IC engine without using a very expensive and bulky holdup tank for storing liquid hydrogen. A water tank is used as the origin of the hydrogen. A pair of electrodes will be used inside the tank with more area exposing the surface for ionizing the water and generating the oxygen and hydrogen as fast as possible. The mixed gas with oxygen and hydrogen will be directed to the engine with a sealed pipe. The engine will work analogously to a normal gasoline engine with 4 strokes, intake, compress, combustion, and emission. The exception is that the emitted gas is vaporized H2O. The emitted vapor will not be released into the air. Instead, it will be collected and recycled to water tank after it is cooled down. The electricity to ionize the water is calculated as per unit volume of gases per unit time is required for combustion. The electrical energy is the ultimate source of the energy for powering up this system. The battery can be recharged with the power generated from different energy recovery systems including a thermoelectric ceramic covering around the engine, so as to improve the efficiency of the entire system and also by use of regenerative braking system. The advantage of this solution against the Electric Vehicle is no high voltage battery is required and for ionizing the water low voltage source is sufficient.
International Journal of Engineering Research and Applications, 2018
In today's world every product ranging from a safety pin to huge complex aircraft engines are all... more In today's world every product ranging from a safety pin to huge complex aircraft engines are all manufactured by various manufacturing techniques. It involves various processes like casting, forming, machining, welding etc. Complex machines have numerous parts and elements which may be asymmetric; irregular shaped and might have a different cross-sectional profile. Manufacturing these complex and intricate shaped components to required dimensional accuracy and good surface finish is a tough task and requires use of various processes like machining, bending etc. This induces some amount of residual stresses in the machine component, and thereby makes it more susceptible to catastrophic failure. To minimize these losses and produce irregular shaped components more efficiently, a unique sand casting process is explained in this paper which makes use of a pattern made of sublime material which when burnt, produces a hollow cavity where the molten metal is poured and the casting is performed. This method eliminates the use of additional finishing processes and gives a good surface finish to the final machine components.
http://www.iaeme.com/IJMET/index.asp 78 [email protected] International Journal of Mechanical Engineering and Technology (IJMET), 2015 Machining is the process of removal of excess material from the given workpiece to finish it to t... more Machining is the process of removal of excess material from the given workpiece to finish it to the required dimensions required as per use. Various metals and alloys are machined with the help of cutting tools like HSS, carbides etc. Majority of the industry manufactured products require machining at some stage ranging from relatively rough or nonprecision work such as cleaning of sprues, risers and gates to high precision work involving tolerances of 0.0001 inch and high surface finish. Machining operations on lathes involve rotating of workpieces and feeding of cutting tool against it in a specified manner with correct feed. This process involves constant rubbing of tool and workpiece which generates a large amount of heat. This heat is usually carried away by the coolant or it is dissipated in the atmosphere. With every passing day, the need for sustainable living on Earth is increasing greatly. For this we need to start extracting and recovering the lost energy. The following paper shows how electricity can be generated from the lost heat produced during machining operation on lathe by using thermocouples.
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Papers by Sameer Rafiq Shah