Team8_Assignment2 (1)

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Jan 9, 2024

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CONCORDIA UNIVERSITY GINA CODY SCHOOL OF ENGINEERING AND COMPUTER SCIENCE DEPARTMENT OF MECHANICAL INDUSTRIAL AND AEROSPACE ENGINEERING MIAE 380- PRODUCT DESIGN AND DEVELOPMENT Professor(s) : Dr. Ashok Kaushal and Dr. Gabriel Taraboulsi ASSIGNMENT 2 Note : Please provide all references for any data/facts used for the assignment 1. Develop a list of specifications for the following objectives for a family sedan. The table should include metrics, the corresponding values (assume a reasonable value for the product based on a benchmarking exercise) and units. [25 Marks] a. The car is fast. b. It can accommodate a family. c. Can transport a family on vacation. d. Fuel efficient. e. Built for Canadian weather. Below is a list of specifications for a family sedan based on the given objectives. Please note that the values provided are reasonable benchmarks, but specific values may vary depending on the car's make and model. Objective Metric Value Units The car is fast. 0-100 kmh (acc time) [1] < 8 seconds seconds Top speed > 200 kmh kmh It can accommodate a family. Number of seats 5 passengers persons Interior spacing Leg space and head space for confortable seating N/A Can transport a family on vacation. Trunk space > 15 cubic feet Cubic feet Roof Rack Available N/A Fuel Efficient. Engine automatic stop/start Available Feature N/A City Fuel Efficiency >15 km/L km/L Highway Fuel Efficiency >20 km/L km/L Built for Canadian weather. Heated seats and steering wheel Available Feature N/A All-wheel drive (AWD) Available N/A Remote start Available N/A These specifications cover various aspects of the family sedan to ensure it meets the objectives of being fast, accommodating a family, capable of transporting a family on
vacation, fuel-efficient, and suitable for Canadian weather conditions. The values mentioned are approximate benchmarks that align with these objectives. 2. As a team, choose an umbrella to take apart. Name the parts and what function they serve. Then build a functional structure for the product. (Assume that the resolution is required at a high level to understand the functional subsystems) [25 Marks [2] [3]. The chosen is Amazon Basics Automatic Small Compact Travel Umbrella. This umbrella has three main parts: the canopy, the runner, the shaft and the handle. The canopy is made from water repellent fabric or plastic and it’s the part of the umbrella that is responsible for protecting the User from the rain and/or provide cover from the Sun. The canopy is stretched over the Ribs that provide support for the canopy, The Ribs are designed from multiple metal rods connected by joints, and the ribs connect altogether by a Runner.
The Runner is a part that can freely slide up and down the Shaft. This will allow the User to open and close the Umbrella, thus making the umbrella easier to store and carry while not being used. The Shaft is the part which connects the canopy to the handle. It contains a sleeve and two springs that determine the canopy’s position. When the strings are opened, the sleeve is on the top part of the shaft and the canopy is opened. When the strings are closed, the sleeve is on the bottom and the canopy is closed. Finally, the handle is the part that allows the user to hold the umbrella in their hand. Canopy Protects the user from rain/covers from the sun Runner: Allows user to open and close the umbrella Ribs: provides support fro the canopy Shaft: Connects canopy to handle Strings: holds sleeve in position Sleeve :opens or closes the canopy Handle: allows user to hold the umbrella in hand
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3. You want to buy a new car and you need to choose which one to buy. You have narrowed your preferences to the following models: Year 2023 2023 2023 2023 Brand Honda Toyota Nissan Volkswagen Model Civic Sedan Corolla Sentra Jetta Trim EX CVT L CVT S Plus CVT Comfort Line Auto To do your comparison use New and Used Cars for Sale – AutoTrader Using the concept scoring matrix compare between the four cars [50 Marks] Selection criteria to evaluate: a. Engine Power (20% weight) b. Comfort (40% weight) c. Cost (40% weight), fuel consumption and price Briefly explain your ranking for each selection criteria. Which car would you recommend purchasing? Answer: Car Engine Power Comfort Cost Honda 158 hp @ 6,000 rpm 7.5 $31,102 Toyota 139 hp @ 6100 rpm 7.0 $25,472 Nissan 149 hp @ 6,400 rpm 7.5 $22,748 Volkswagen 158 hp @ 5,500 rpm 7.5 $29,744 Evaluating Criteria [4] The evaluating criteria table provides a comparative overview of four popular car models – Honda, Toyota, Nissan, and Volkswagen. The table focuses on three key attributes: Engine Power, Comfort, and Cost. We can see that the Honda is the most expensive car with highest horsepower (sharing with Volkswagen) with the highest rmp while the cheapest car is Nissan with a moderate level of engine power. The criteria comfort is average according to ride quality, seat comfort, Interior noise & space, cabin materials & quality, visibility, suspension & damping, and lastly interior layout & storage. However, a rigorous analysis is required to evaluate the comfort in a deeper level. Below you will find the table 2 where we evaluate the comfort criteria and other factors. The comfort scores have been taken from the online resource Edmunds [5]. They have reviewed a range of criteria to give equivalent scores for each car. These scores have been used to quantify the comfort in each of the models.
Concept Matrix Reevaluating Comfort Criteria Here we are evaluating the different parameters of all the cars. We have divided it into three categories- Fuel Economy, Interior & Specs. Table 2: Evaluating Comfort Criteria [6] Specification Weight Honda Toyota Nissan Volkswagen Engine Power 20% 5 2 3 4 Comfort 40% 4 3 2 5 Cost 40% 1 4 5 3 Total 100% 3 3.2 3.4 4 Table 3: Concept Score Matrix After conducting a concept scoring matrix, we have evaluated that Volkswagen is the ideal choice. In the parameters, engine power, comfort and cost, Volkswagen scores the highest points, while the Honda Civic is the least ideal choice. A few of the parameters that we considered are – Fuel economy, air conditioning, fuel tank capacity and cruise control. One of the main reasons why the Volkswagen gained the most points was due to its high engine power or 158hp@5500 rpm. It also has additional features that differentiate it from the rest of the competition such as adaptive cruise control, leatherette seats and Climatronic air conditioning. The Nissan Sentra has fewer features as compared to the Honda Civic and Toyota Corolla, yet its low cost puts it above these two in terms of points. Finally, the Honda Civic with its high price tag and limited features comes in as the last choice.
References [1] J. Elfalan, “How We Test & Rank Cars,” Edmunds, Mar. 01, 2022. https://www.edmunds.com/car-reviews/features/how-we-test-cars-and-trucks.html [2] “Amazon Basics Automatic Small Compact Travel Umbrella - Black : Amazon.ca: Clothing, Shoes & Accessories.” [Online]. Available: https://www.amazon.ca/AmazonBasics-Automatic- Travel-Umbrella-Black/dp/B00WTHJ7HO/ref=asc_df_B00WTHJ7HO/?tag=googleshopc0c- 20&linkCode=df0&hvadid=292914399966&hvpos=&hvnetw=g&hvrand=989132466478883236& hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1002604&hvtargid=pla -300447127435&th=1 [3] Cheryl R. Varnadoe , “Georgia 4-H Cotton Boll and Consumer Jamboree 2010,” Georgia 4-H, 2012. https://cannon.tennessee.edu/wp-content/uploads/sites/85/2020/04/4H-Judging-CDM- Study-Umbrellas.pdf [4] AutoTrader. "2023 Honda Civic Sedan for Sale in Montréal, QC." AutoTrader, https://www.autotrader.ca/cars/honda/civic%20sedan/2023/qc/montr%c3%a9al/? rcp=15&rcs=0&srt=35&prx=100&prv=Quebec&loc=H3H %202E6&hprc=True&wcp=True&sts=New&showcpo=1&inMarket=advancedSearch , Accessed: October 27, 2023. [5] Edmunds “Car reviews” https://www.edmunds.com/car-reviews/ , Accessed: October 27, 2023. [6] Toyota Canada. "Toyota Corolla Model Comparison." https://www.toyota.ca/toyota/en/compare/corolla , Accessed: October 27, 2023.
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