About
Director leading a talented and diverse global team of Technical Research Analysts behind…
Activity
-
This one was fun. Thanks Alliance for Automotive Innovation for putting it together!
This one was fun. Thanks Alliance for Automotive Innovation for putting it together!
Liked by Graham Evans
-
Recently, I had the privilege of hosting a work experience student, Arun, and it turned out to be an incredibly rewarding experience - for both of…
Recently, I had the privilege of hosting a work experience student, Arun, and it turned out to be an incredibly rewarding experience - for both of…
Liked by Graham Evans
-
Opening session at AVERE - The European Association for Electromobility AEC conferece, Christina Bu at Norsk elbilforening (Norwegian EV Association)…
Opening session at AVERE - The European Association for Electromobility AEC conferece, Christina Bu at Norsk elbilforening (Norwegian EV Association)…
Liked by Graham Evans
Experience
Education
Licenses & Certifications
Publications
-
Transmission and Driveline Noise Target Setting using the Tone-in-Band Method
INCE (Institute of Noise Control Engineering), Internoise 2013
Paper 0761 (Contributed)
Frequently, Transmission and Driveline-related noise issues are not identified until late in vehicle development programmes. These issues, typically characterised as ‘whines’, can be masked due to the high background interior noise of early development mules and prototype cars. As the vehicle matures, refinement improvements to other subsystems result in lower background interior noise levels, meaning whines become more pronounced and objectionable. Little time…Paper 0761 (Contributed)
Frequently, Transmission and Driveline-related noise issues are not identified until late in vehicle development programmes. These issues, typically characterised as ‘whines’, can be masked due to the high background interior noise of early development mules and prototype cars. As the vehicle matures, refinement improvements to other subsystems result in lower background interior noise levels, meaning whines become more pronounced and objectionable. Little time is then available to resolve these issues or introduce revised parts. This is a growing concern with increasing customer expectations towards refinement, especially in the luxury car segment. In this paper the ‘Tone-in-Band’ Method is described and its application to the process of transmission and driveline whine target setting is proposed. A jury of assessors was subjected to whines of varying ‘Tone in Band’ levels, against a defined target level of vehicle background noise. The assessor’s responses were used to define ‘Audible’ and ‘Acceptable’ levels of whine in the cabin. These levels could then be transposed into Transmission and Driveline target lines for in-gear acoustic performance. Targets defined using the ‘Tone-in-Band’ Method have been applied twofold – to the evaluation of proposed components for improved Noise, Vibration and Harshness (NVH) and to the monitoring of vehicle maturation. Consideration is given to the merits of the ‘Tone-in-Band’ Method compared to other target setting tools for similar applications.Other authorsSee publication -
Sound Metric Balance of Engine Cooling Fan Noise to enable Delivery of Good Exterior Sound Quality, SAE Paper
Society of Automotive Engineers Conference, Grand Rapids, USA
The drive for lower CO2 emissions places ever greater demand on cooling dissipation for a multi-cylinder internal combustion engine. This challenge has increased the requirements of the engine cooling system, particularly in countries where high ambient temperatures prevail and HVAC usage is high. Environmental necessity coupled with market demands have resulted in cars which emit a higher level of cooling fan noise which is intrusive in an urban environment and objectionable to…
The drive for lower CO2 emissions places ever greater demand on cooling dissipation for a multi-cylinder internal combustion engine. This challenge has increased the requirements of the engine cooling system, particularly in countries where high ambient temperatures prevail and HVAC usage is high. Environmental necessity coupled with market demands have resulted in cars which emit a higher level of cooling fan noise which is intrusive in an urban environment and objectionable to customers.
Conventional quantification of noise using traditional units and metrics was found to be insufficient for effective Sound Quality analysis. To assist Bentley Motors, a high performance luxury vehicle manufacturer, with its brand cachet and its commitment to the environment and customer, a new sound metric analysis has been devised to help the business deliver an ever-quieter exterior power unit cooling system.
A rig simulating a vehicle cooling fan installation has been constructed to compare Bentley fans with competitor fans. Ranking the fans in terms of overall sound pressure level for a given fan speed was found to correlate poorly with the subjectively perceived ‘best’ fan. Sound metrics were used to characterise the fans, with ‘sharpness’ displaying good correlation with subjective perception of tonality and ‘loudness’ correlating well with flow noise. Furthermore, it was found that a linear balance between sharpness and loudness with increased speed led to improved perception throughout the speed range. Areas of poor balance were subjectively found to be speeds where either tonality or flow noise dominates human perception. Acoustic targets in terms of balance between sharpness and loudness were established for Bentley fans.Other authorsSee publication
Courses
-
ISVR - Human Responses to Vibration (Short Course)
-
-
Ricardo UK Limited - Automotive Transmission Fundamentals
-
-
Volkswagen Group AutoUni - Gesamtfahrzeug
-
Languages
-
German
-
-
French
-
Organizations
-
Institution of Mechanical Engineers
-
- Present
More activity by Graham
-
The question in 2025 won't be anymore do I buy an electric or petrol car but what type of electric car I want. The EV market will look completely…
The question in 2025 won't be anymore do I buy an electric or petrol car but what type of electric car I want. The EV market will look completely…
Liked by Graham Evans
-
Tune in to the latest episode of the Autology podcast, where I discuss the findings from our newly released #batteryprice report with Amit Panday and…
Tune in to the latest episode of the Autology podcast, where I discuss the findings from our newly released #batteryprice report with Amit Panday and…
Liked by Graham Evans
-
Easee is dedicated to sustainable mobility and renewable energies. Come and meet our CEO Anthony Fernandez, Country manager Alfred Kuijer and me…
Easee is dedicated to sustainable mobility and renewable energies. Come and meet our CEO Anthony Fernandez, Country manager Alfred Kuijer and me…
Liked by Graham Evans
-
Five reflections after an excellent two days at The UK Charging Infrastructure Symposium last week: 1) The U.K. is tracking well on the exponential…
Five reflections after an excellent two days at The UK Charging Infrastructure Symposium last week: 1) The U.K. is tracking well on the exponential…
Posted by Graham Evans
-
My friend and colleague Lee Janger and I had the opportunity to speak at the World Bank. We spoke to a very thoughtful audience, experts…
My friend and colleague Lee Janger and I had the opportunity to speak at the World Bank. We spoke to a very thoughtful audience, experts…
Liked by Graham Evans
-
Great to see some positive EV announcements in last week's Budget (continued tax incentives, plug-in van grant, funding for charging infrastructure…
Great to see some positive EV announcements in last week's Budget (continued tax incentives, plug-in van grant, funding for charging infrastructure…
Liked by Graham Evans
-
On Monday I'll be speaking at The UK Charging Infrastructure Symposium in Gaydon. Looking forward to a fantastic event and some engaging…
On Monday I'll be speaking at The UK Charging Infrastructure Symposium in Gaydon. Looking forward to a fantastic event and some engaging…
Posted by Graham Evans
-
Our Innovation Day series continues with our Software Defined Vehicle event in Frankfurt, and it’s just a few weeks away! If this is your subject…
Our Innovation Day series continues with our Software Defined Vehicle event in Frankfurt, and it’s just a few weeks away! If this is your subject…
Shared by Graham Evans
-
A month into my Automotive Engineering degree, I reflect on a visit to BMW World in Munich, where I learned about BMW’s evolution—from making plane…
A month into my Automotive Engineering degree, I reflect on a visit to BMW World in Munich, where I learned about BMW’s evolution—from making plane…
Liked by Graham Evans
Other similar profiles
Explore collaborative articles
We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
Explore MoreOthers named Graham Evans in United Kingdom
-
Graham Evans
-
Graham Evans
-
Graham Evans
Graham Evans
-
Graham Evans
Chair at Northamptonshire Battlefields Society
283 others named Graham Evans in United Kingdom are on LinkedIn
See others named Graham Evans