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Entry Level Connected Infotainment Unit with Smartphone and vehicle integration

Maruti Suzuki India Ltd-Tarun Aggarwal, Ritesh Khandelwal, Satish Pandey, Satish Kumar Pandey, Himanshu Kumar Ojha
Maruti Suzuki India, Ltd.-Soundharya N
  • Technical Paper
  • 2019-28-2434
To be published on 2019-11-21 by SAE International in United States
As we transition towards Internet of Things (IoT) - humans are connected to each other & outside world through the smartphone. Customers tend to use smartphones for varied purposes ranging from communication to entertainment. However, the concern of distraction exists due to poor visibility & accessibility of the phone's screen in driving condition. One of the repercussion of being connected to smartphone particularly in driving condition includes higher number of road accidents due to distraction. This paper explains one of the key initiatives taken by Maruti Suzuki India Limited to address the same. This is done by offering an entry level connected infotainment system which comprises of the following three components: (a) An entry-level infotainment with basic display & vehicle connectivity, (b) A Dock mounted on infotainment panel enabling safe usage of smartphone due to its position i.e. accessibly and visibility in driving condition, (c) A Driving App specifically designed for driving usage where one can access calling, messaging, navigation on the go with a vibrant UI & easy to use gestures. The infotainment unit…
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SmartPlay Studio-A Connected Infotainment Development

Maruti Suzuki India Ltd-Pankaj Kumar Bharti, Shashi Kant Roy, Surendra Raghuwanshi, Satish Pandey, Ritesh Khandelwal, Tarun Aggarwal, Satish Kumar Pandey
  • Technical Paper
  • 2019-28-2440
To be published on 2019-11-21 by SAE International in United States
Infotainment has been always an important aspect of life which has made its way to car design. The cars today are much more advanced compared to their predecessors. The in-vehicle infotainment advancements have followed the consumer electronics market in terms of technologies such as Touchscreen, App based Navigation, Voice Assistant and other multimedia services. This trend is going to expand further as smartphones have revolutionized the infotainment domain with awareness and accessibility to customers. The infotainment system in the cars are expected to be connected not only to the cloud but various vehicle controllers to display host of information & controls at customer`s fingertips. To design a system that supports connectivity to both cloud and vehicle is challenging in terms of cost and design for the OEMs. With focus on Indian market condition and global trends, this paper analyzes the customer expectation for Connected Infotainment system. It also explains the methodology adopted by Maruti Suzuki India Limited to: (i) Provide a seamless Connected Infotainment system (Smartplay Studio) for its model line-up (ii) Leveraging Smartphone Linkage…
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Study of Handling Behavior of a Passenger Vehicle after addition of CNG Tank

Maruti Suzuki India Ltd-Lakshmi Narasimha Varma Jelli, Raghav Budhiraja, Akash goel, Deepak BAKSHI
Maruti Suzuki India, Ltd.-Rakesh K
  • Technical Paper
  • 2019-28-2405
To be published on 2019-11-21 by SAE International in United States
Objective The objective of this paper is to achieve a comparable handling performance from a vehicle fitted with a CNG tank to that of its gasoline counterpart. A validated CarSim model is run through standard handling evaluation tests before and after the addition of CNG tank. The simulation results are used to compare the handling characteristics of the CNG vehicle with the Base vehicle. Further these results are used to tune the suspension parameters to find an optimum set-up for the actual CNG vehicle. The final parameters are then evaluated in the actual vehicle to verify the study. Methodology A mix of Actual Mule vehicle testing backed by quik Car Sim Model. Full car model is first developed using CarSim by using the parameters of the actual base gasoline vehicle. The modeled vehicle is then tested for standard handling maneuvers such Double Lane Change, Constant Radius Constant Speed and Pulse Input. Further the actual vehicle is run through the exact same tests with the same inputs. The results are used to fine tune the CarSim…
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Methodology for failure simulation Using 4 corner 6 DOF Road load simulator of Overhanging Components: An Experimental Approach

Maruti Suzuki India Ltd-Naveen Malik, Sahil Jindal, Sayed Zergham Ali Naqvi
Maruti Suzuki India, Ltd.-Ayan Bhattacharya
  • Technical Paper
  • 2019-28-2404
To be published on 2019-11-21 by SAE International in United States
Nowadays, Road Load Simulators are used by automobile companies to reproduce the accurate and multi axial stresses in test parts to simulate the real loading conditions. The road conditions are simulated in lab by measuring the customer usage data by sensors like Wheel Force transducers, accelerometers, displacement sensors and strain gauges on the vehicle body and suspension parts. The acquired data is simulated in lab condition by generating ‘drive file’ using the response of the above mentioned sensors. For generation of proper drive file, not only good FRF but ensuring stability of inverse FRF is also essential. Stability of the inverse FRF depends upon the simulation channels used. In this paper, an experimental approach was applied for focused failure simulation of engine mount, one of such low correlation zone, with known history of failure. Methodology was established to simulate proving ground loads on engine mount along with simulation of loads at wheel center using a 4 corner 6 DOF road load simulator. Result was verified by endurance run on test rig and matching the nature…
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Evaluating the Effect of Light Weighting Through Roll Stiffness Change on Vehicle Maneuverability and Stability

Maruti Suzuki India Ltd-Eric Pranesh Reuben, Sreeraj N
Maruti Suzuki India Ltd.-Raghav Budhiraja
  • Technical Paper
  • 2019-28-2406
To be published on 2019-11-21 by SAE International in United States
Objective To achieve better fuel economy and reduced carbon footprint, OEMs are reducing the sprung and unsprung mass. This translates into a reduction in stiffness which profoundly deteriorates the handling/road holding characteristics of the vehicle. To model these changes in stiffness, modifications are made to suspension roll stiffness at the front and rear. This study compares different configurations of roll stiffness and evaluates vehicle behavior using frequency response characteristics and phase change of Yaw Gain recorded. The present work associates acquired data with subjective feedback to outline the shift in vehicle balance emerging from a variation of sprung and unsprung mass ratio. Methodology To study the frequency response characteristics of the vehicle, the pulse input is chosen for this. An ideal pulse input’s Fourier transform represents constant amplitude over all the frequency ranges. By giving a single input, the system is subjected to a range of frequencies. The changes in roll stiffness at the front and rear axles are achieved through addition of Stabilizer Bars of different diameters and stiffness. The test is conducted using…
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Design of Roof Rack Rails with Cost and Weight Optimization

Maruti Suzuki India Ltd-Abhishek Softa, Anuj Shami, Rajdeep Singh Khurana
Published 2017-03-28 by SAE International in United States
The fuel efficiency of a vehicle depends on multiple factors such as engine efficiency, type of fuel, aerodynamic drag, and tire friction and vehicle weight. Analysis of weight and functionality was done, to develop a lightweight and low-cost Roof rack rail.The Roof rack rail is made up of a lightweight material with thin cross section and has the design that allows the fitment of luggage carrier or luggage rack on the car roof.In starting this paper describes the design and weight contribution by standard Roof rack rail and its related parts.Secondly, the selection of material within different proposed options studied and a comparison of manufacturing and design-related factors.Thirdly, it has a description of the design of Roof rack rail to accommodate the luggage carrier fitment on the car roof. Moreover, optimizations of Roof rack rail design by continuous change in position, shape, and parts used.Finally, the detail of the lightweight and cost effective Roof rack rail design. Cause and countermeasure detail of the surface defects occurred in parts during mass production. Moreover, a realization of…
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Novel Approach towards Fuel Tank Heat Shield Design

Maruti Suzuki India Ltd-V N Bhasker, Abhinav Agarwal, Abhishek Sharma, Avisek Das, Nirajkumar Mishra
Published 2017-03-28 by SAE International in United States
Vehicle heat management has become a serious concern due to escalating under-hood and exhaust temperatures. Compact vehicle packaging caused by downsizing has further magnified this concern. In an automobile, fuel is stored in a metallic or plastic fuel tank. In addition to fuel storage, temperature inside fuel tank has to be maintained at a certain limit in order to control high fuel evaporation rate and prevent deterioration of parts. The fuel tank surface temperature is governed by heat rejection from the engine, exhaust system and heat radiated from the road. Generally, mechanical shielding has been found to be an efficient defense to the heat management problem. However ‘what to shield’, ‘where to place the shield’ and ‘how to shield’ are the major challenges. This paper describes a methodology followed to reduce temperature on fuel tank surface by varying material, geometry and layout of heat shields. Computational Fluid Dynamics (CFD) of different iterations were carried out and correlated with actual vehicle test to determine the most effective shielding arrangement between exhaust system and fuel tank.
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Methodology to Study the Effect of Variation of Suspension Characteristics on Body Durability

Maruti Suzuki India Ltd-Mani Shankar, I V N Sri Harsha, K V Sunil, Ramsai Ramachandran
Published 2017-03-28 by SAE International in United States
In an automobile, road loads due to tire-road interaction are transferred to vehicle body through suspension. This makes suspension a critical component from the body durability perspective. During vehicle design and development, optimization of suspension parameters to suit ride and handling performance is a continuous and iterative process. These changes on suspension can affect vehicle body durability performance. This paper tries to establish a process to evaluate the effect of changes in suspension parameters on body durability, thus helping in understanding the impact of these changes.The process starts with virtual model building in Multi Body Dynamics software. The base line model is correlated with testing using fatigue at some critical locations on Body in White (BIW). Once correlated, Design of Experiments (DOE) approach is used on suspension parameters like spring properties, damper properties etcetera to identify critical parameters that will affect the magnitude of loads on the body-suspension attachment points. These loads are further used to evaluate effect on durability of the body using Finite Element Method (FEM) approach.
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Design of Front Structure of Vehicle for Pedestrian Headform Protection

Maruti Suzuki India Ltd-Abhishek Sinha, Rajdeep Singh Khurana
Maruti Suzuki India, Ltd.-Kamlesh Yadav
Published 2017-03-28 by SAE International in United States
Vehicle Hood being the face of a passenger car poses the challenge to meet the regulatory and aesthetic requirements. Urge to make a saleable product makes aesthetics a primary condition. This eventually makes the role of structure optimization much more important. Pedestrian protection- a recent development in the Indian automotive industry, known for dynamics of cost competitive cars, has posed the challenge to make passenger cars meeting the regulation at minimal cost. The paper demonstrates structure optimization of hood and design of peripheral parts for meeting pedestrian protection performance keeping the focus on low cost of ownership. The paper discusses development of an in-house methodology for meeting Headform compliance of a flagship model of Maruti Suzuki India Ltd., providing detailed analysis of the procedure followed from introduction stage of regulatory requirement in the project to final validation of the engineering intent. The paper presents the impact of major limitations, such as, usage of common platform, aesthetics of hood, height of hood and layout of safety devices present below the hood -on design of hood for…
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Analysis of Potential of Sailing Functionality in Indian Driving Conditions

Maruti Suzuki India Ltd-Arnab Ghosh, Abhishek Bhatia, Srinidhi Suresh
Published 2016-02-01 by SAE International in United States
Sailing Function allows a vehicle to roll freely without traction force, using an automated powertrain/clutch control strategy- when power demand from internal combustion engine is low. Currently in AMT/MT, during coasting phase with clutch and gear engaged, ECM requests a ‘Fuel-Cut’ - where additional vehicle kinetic energy is spent in overcoming Engine friction losses (loss as heat from friction). To avoid this, the drivetrain can be disconnected from Engine - by actuating the clutch, or engaging neutral or both -popularly called sailing - thereby increasing rolling distance. This study focusses on the various aspects of developing a sailing strategy suitable for Indian Conditions - driving pattern, road and traffic conditions. Sailing timeshare - or the amount of time spent in this state was evaluated in flat and hilly driving conditions. Estimation is made about the potential impact of this technology on real world fuel economy of the vehicles, in comparison to the conventional Fuel cut based technology, Idle Start Stop technology and Coasting start stop technology. The impact of this technology on the driver -…
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