Browse Topic: Quality function deployment
This paper introduces a wholistic approach for design and development of a turbo-charged four-cylinder engine system using the Quality Function Deployment (QFD) methodology for target setting. Additionally, an exhaustive comparison is conducted between the current product’s NVH performance and that of the target product to design the required countermeasures to reach the desired performance. The proposed process consists of subsequent phases; starting with the voice of customer collection and organizing customer clinic, definition of strategic target to reach, specifying the gap between the current product’s performance, and setting the desired target levels to design and develop the required enablers to close the gap. The final phase is the demonstration of the current product with emulated enablers to the stakeholders
<![CDATA[Abstract]]> Paddy farming in India requires extensive water use. Due to the rapidly declining groundwater and ever-increasing monsoon uncertainty, there is a significant drive on water conservation for paddy farming through sustainable agriculture practices. The wide depth variability of irrigation water in Indian rice fields, as much as 160 mm, necessitates an extra 100 mm of water in the field to provide complete water coverage. This is primarily due to the inaccurate manual land leveling often practiced in Indian paddy farming. However, accurate laser land levelers have been created by integrating low-cost electronics, hydraulics and global positioning system (GPS) technology. This paper provides an overview of current practices and suitable operating procedures to meet the future demand for land leveling. The presentation compares the laser land leveler with GPS land-leveling solutions, examining technical differences and individual merits and limitations. In addition, a
An automotive vehicle should be designed to satisfy the wants of customers. The key is how to convert voices of customers into engineering languages. In other words, transfer the wants of customers into the right technical characteristics of a vehicle. A questionnaire of customer wants for a CUV (Crossover Utility Vehicle) is created and processed. Using QFD (Quality Function Deployment) and modified KANO model, the relative important degree is obtained from the original relative important degree of customer wants surveyed. Since some information gained is uncertain and the questionnaire sample is limited, a gray correlation analysis method is introduced, which calculates the competitive important degree of customer wants, then the final important degree of customer wants is gained by integrating the relative important degree and the competitive important degree. In order to solve the correlation degree of the wants of customers and the vehicle technical characteristics, Six senior
Many high risks of failure in developing and applying new technologies exist in the recent automotive industry because of big volume of selling cars in a global market. Several recalls cost companies more than $ 100 million per problem. New technologies always have uncertainty in performing intended functions at various given conditions despite the fact that engineers do their best to develop technologies to meet all the requirements. Uncertainty of new technologies put companies into danger of failing in their business. Therefore, many companies tend to take interest in reducing risks from the uncertainty in technologies, but the increasing complexity of modern automotive technologies make it difficult to develop complete technologies. A new engineering methodology called SPEED Engineering was introduced to reduce the risks of new technology applications and to facilitate engineers to conceive innovative ideas dominating the market in the future. Also it is used to help engineers
Long periods of sitting occur during our day to day life. It has been estimated that up to 80% of our active non-sleeping time is spent in some sort of sitting position during work, recreation, entertainment, commuting, resting, and exercising. As a result, several health effects like numbness, nerve/circulation occlusions, pressure sore, low back pain, and vein thrombosis have been associated with protracted sitting. Numerous researches have been conducted in the area of seat comfort that depended on conventional methods of testing physical prototype of seat model for comfort. The implementation of the seat comfort results are implemented in the next cycle of the design which may take up to three years. Recent advances in new technology, available after the prototype seat comfort testing, may not be incorporated in the next new seat design. This research work is geared towards developing a technique, tool and metric for seat comfort prediction. The approach stems from using System
The exhaust valve plays a role of reducing the mechanical noise and vibration of vehicle by smooth discharging of the vehicle emissions after combustion process in exhaust system of engine. The torsion spring is one of the most core components in exhaust valve, which generates variable torque for control of opening and closing angle of exhaust valve. Its performance represents all over the performance of exhaust system of vehicle. As it were, the failure of torsion spring means the failure of all exhaust system. So, as well as performance, the reliability of the torsion spring is very important. To secure the reliability is same to secure the security and comfort of passengers including driver. This paper proposed two methods for improvement of torque and reliability characteristics of torsion spring. One is improvement of heat treatment condition for getting of more constant torque characteristic of torsion spring. The optimal heating cycle for heat treatment is newly introduced
This document addresses robustness of electrical/electronic modules for use in automotive applications. Where practical, methods of extrinsic reliability detection and prevention will also be addressed. This document primarily deals with electrical/electronic modules (EEMs), but can easily be adapted for use on mechatronics, sensors, actuators and switches. EEM qualification is the main scope of this document. Other procedures addressing random failures are specifically addressed in the CPI (Component Process Interaction) section 10. This document is to be used within the context of the Zero Defect concept for component manufacturing and product use. It is recommended that the robustness of semiconductor devices and other components used in the EEM be assured using SAE J1879 OCT2007, Handbook for Robustness Validation of Semiconductor Devices in Automotive Applications. The emphasis of this document is on hardware and manufacturing failure mechanisms, however, other contemporary issues
This document provides methods and techniques for implementing a reliability program throughout the full life cycle of a software product, whether the product is considered as standalone or part of a system. This document is the companion to the Software Reliability Program Standard [JA1002]. The Standard describes the requirements of a software reliability program to define, meet, and demonstrate assurance of software product reliability using a Plan-Case framework and implemented within the context of a system application. This document has general applicability to all sectors of industry and commerce and to all types of equipment whose functionality is to some degree implemented by software components. It is intended to be guidance for business purposes and should be applied when it provides a value-added basis for the business aspects of development, use, and sustainment of software whose reliability is an important performance parameter. Applicability of specific practices will
Recent development in automobile industries has seen increased customer attention for good door slamming noise. One of the constituent which plays major role in building brand image of vehicle in terms of NVH performance is door slam noise quality. Hence it is very desirable to understand how different door elements radiate sound during a door-closing event and how to optimize a door structure to achieve specific sound target in order to ensure the door closing noise quality, NVH engineers needed to look at contributions from different door subsystems. The use of statistical tools like Six Sigma can further help them to ensure the consistency in results. This paper explains the systematic approach used to characterize different element of door which contributes to the overall door slam noise quality through QFD (Quality Function Deployment) and contribution analysis. The different mechanisms contributing to door slam noise were studied. NVH characteristics (Acoustic transfer Function
An existing pass by noise data acquisition system was upgraded to provide the sophisticated data analysis techniques and test site efficiency required to comply with the current and future drive by noise regulations. Use of six sigma tool such as voice of the customer helped in defining the customer requirements which were then translated into the desired engineering characteristics using QFD. Pugh concept matrix narrowed down the best option suitable for the test site modifications taking into account the critical constraints such as test complexity, system cost & transparency to the existing drive by noise setup. Features of the new system include data telemetry, frequency analysis, portability and efficient data management through the use of advanced data acquisition system. Wireless mode of the data transmission helped significantly avoid most of the test site modifications, which in turn helped to reduce the overall system implementation cost. The benefits of the improvements
The paper presents a development strategy for a Low Cost Vehicle (LCV) concept set at a target MSRP of $8000 (USD) for the U.S. market. Tata Nano, currently the world's cheapest car in production, is developed on similar principles of the Ford's Model T concept. This paper adopts a similar methodology behind the development of the Tata Nano and is considered as the starting point for the LCV development. It gives an overview of the unique product development process of the ‘Tata Nano’ and shows the possibility of applying similar methodologies, based on systems engineering principles, for future low cost vehicles which will be suitable for the American market. The major automotive systems were assigned specific cost targets based on the set target cost of $8000 (USD) for the LCV. The specifications of the systems were derived based on customer needs and the U.S. Federal Motor Vehicle Safety Standards (FMVSS) using analytic tool Quality Function Deployment (QFD) and by comparing and
In a very competitive environment, product development in automobile industry needs to be fast paced with best in quality to stay ahead in the race. Therefore a clear understanding of customer requirements is essential in successful design and development of systems. Failure in any system development step can result in costly design and tooling changes, schedule delays and ultimately, customer dissatisfaction. A team was formed to design and develop an automotive system by applying Design for Six Sigma Green Belt methods and tools. The hypothesis of this study was that a substantial opportunity exists to increase project efficiency while providing what customer wants, by following a standardized statistical work practice for managing requirements throughout the life of product development using the methodology of Design for Six Sigma DMADV (Define, Measure, Analyze, Design and Verify). In this paper an automotive HVAC system is designed following DFSS methodology. The application
Motorized closures support the comfort in vehicles to an increasing degree. In the past the use of indirect sensors was an effective low-cost solution for anti pinch [1,2]. The demand for a reduction of the forces affecting the user and for minimized closing times leads to direct sensor solutions. A new aspect is the protection of moving vehicle parts, which we call collision avoidance. This paper deals with system aspects securing the movement area of motorized closures. An analysis is made for sliding doors, trunk lids and tailgates, pointing out the danger zones and the use cases. The result of a QFD (Qualitiy Function Deployment) with respect to the demands of the customer is shown. This leads to a rough description of the requirements for the technical solutions. A technology benchmark is conducted separately for anti-pinch and for collision avoidance. The two applications have distinct requirements; therefore different technological solutions are identified. As an example, the
This standard requires the developers and customer/user’s working as a team to plan and implement a reliability program that provides systems/products that satisfy the user’s requirements and expectations. The user’s requirements and needs are expressed in the form of the following four reliability objectives: The developer shall solicit, investigate, analyze, understand and agree to the user’s requirements and product needs. The developer, working with the customer and user, shall include the activities necessary to ensure that the user’s requirements and product needs are fully understood and defined, so that a comprehensive design specification and Reliability Program Plan can be generated. The developer shall use well-defined reliability- and systems-engineering processes to develop, design, and verify that the system/product meets the user’s documented reliability requirements and needs. The developer shall implement a set of engineering activities (included in this standard as
Aluminum alloy heat exchangers use chromium (VI) compound for their surface treatment to prevent white rust. The use of chromium (VI) compound is restricted and will be banned worldwide in view of environmental concerns. Therefore, we need a timely change to the non-chromate type treatment. Considering this trend, we have developed and released non-chromate type heat exchangers. In addition to high corrosion resistance, these heat exchangers feature a good hydrophilic ability, antibacterial activity, and smell preventing property. With simultaneous development activities at the development and design divisions, as well as making good use of the quality function deployment (QFD) method into the total process from design work to production we have completed the project in a short time
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