Jump to content

  • Welcome to Auto Parts Forum

    Whether you are a veteran automotive parts guru or just someone looking for some quick auto parts advice, register today and start a new topic in our forum. Registration is free and you can even sign up with social network platforms such as Facebook, X, and LinkedIn. 

     

Friction of automobile parts

袁春凤 (Tiffany)
 Share

Recommended Posts

袁春凤 (Tiffany) Enthusiast

袁春凤 (Tiffany)

Posted
Posted

The phenomenon that two objects move relative to each other to produce motion resistance between their contact surfaces is called friction, which is called friction. The existence of friction not only increases the power consumption, but also causes the wear of parts' contact surfaces. Therefore, lubricating oil is usually used between the relative moving surfaces of automobile parts to reduce friction. Failure of automotive parts 75% is caused by friction.

Friction can be divided into dry friction, liquid friction, boundary friction and mixed friction according to the lubrication state of the parts.

(1) dry friction

The friction between the frictional surfaces without any lubricating medium is called dry friction.

When the parts are in the state of dry friction, the surface of the parts is abraded sharply, so the surface of the moving parts of the automobile should avoid the occurrence of dry friction as far as possible.

Dry friction and boundary friction are the main friction between the upper part of cylinder wall and piston ring. Dry friction will occur when the journal and bearing are subjected to impact load in the working process.

(2) liquid friction

Two the friction of the friction surface when the lubricant is completely separated is called liquid friction.

In liquid friction, the two friction surfaces are completely separated by a layer of lubricating oil film with a thickness of 1.5-2.0um, which avoids direct contact between the working surfaces of the two parts. Friction only occurs between the lubricating fluid molecules, so the friction resistance is very small, and the wear of the parts is very slight.

Most of the relative motion parts of a car are carried out under the condition of liquid friction (for example, crankshaft and bearing).

(3) boundary friction

Two friction surface separated by a very thin boundary film is called boundary friction.

The oil film thickness is usually below 0.1um. Friction only occurs between the outer molecules of the boundary film, reducing the friction and wear of the parts. But its thickness is very small, and it is easy to be destroyed by impact and high temperature, so it is not as reliable as liquid friction.

For example: between cylinder wall and piston ring; if the work crankshaft and journal between the insufficient supply of lubricant, easy to produce boundary friction.

(4) Mixed friction

The friction between two friction surfaces in the presence of dry friction, liquid friction and boundary friction is called mixed friction.

In the actual working state, the parts usually work under the mixed friction state, and the friction state varies with the working conditions.

机油尺.jpg

  • 5 years later...
Albert Park Newbie

Albert Park

Posted
Posted (edited)

Friction in automobile parts occurs when two surfaces rub against each other, causing wear and energy loss. Proper lubrication, as detailed on

link hidden, please login to view
, is essential to reduce friction, enhance performance, and extend the lifespan of vehicle components.

Edited by Albert Park

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Content

  • Similar Topics

    • Counterman
      Transtar Adds General Repair Parts in Over 50 Locations Across N. America
      By Counterman
      link hidden, please login to view, a division of link hidden, please login to view, announced it is adding new general repair parts commonly used by transmission repair shops in over 50 locations. With the addition, these general repair parts will now be available at the majority of Transtar’s 70 locations, simplifying complex vehicle repair by enabling repair shops to find the parts they need in one location, the company said. The aftermarket brands with which Transtar is partnering as part of the expansion, and their respective repair parts, include:
      • Denso – ignition coils, oxygen sensors, spark plugs
      • ProMax – Brake pads, rotors, chassis, control arms
      • Sunsong® – Brake hoses
      • GSP® – CV axles, hub assemblies
      • DFC – Brake pads, rotors, calipers
      “The addition of general repair parts at a significant number of our locations is an exciting enhancement and one that is a part of Transtar’s overall commitment to becoming a one-stop solution for our customers,” said Tom DeMille, executive vice president, sales and marketing. “We’re committed to supporting shops in all types of repairs. Whether that’s a general automotive repair or more complex transmission repair, Transtar has the parts needed to keep the world moving.”
      For a complete listing of Transtar locations and products, visit
      link hidden, please login to view. The post
      link hidden, please login to view appeared first on link hidden, please login to view.
      link hidden, please login to view
    • Counterman
      Automotive Parts Headquarters Announces Supplier Award Winners
      By Counterman
      Automotive Parts Headquarters Inc. (APH) recently held its annual conference, convening 500 store owners, managers, sales representatives, suppliers and support staff under the theme “Say Yes.” The event featured an awards banquet that recognized outstanding achievements in supplier performance for 2024, among which was Gates Corporation being named Supplier of the Year.
      APH said its annual conference reinforced the collaborative spirit that drives APH’s continued growth and success.
      Corey Bartlett, CEO of
      link hidden, please login to view, along with key leaders including Kevin Mack, vice president of merchandising; Jim Becker, merchandising manager; Jim Gruber, general manager of BENCO Equipment; Lonnie Kocmick, president of Refinish Supply Co.; and Jason Vogel, president of APH Stores, presented the awards based on evaluations from APH’s store teams and support center staff. “We are delighted to recognize our top suppliers who exemplify the spirit of ‘Say Yes’ through their exceptional support of
      link hidden, please login to view,” Bartlett said. “Strong partnerships with companies such as Gates, BBB, PICO, East Penn, Bosch, the Alliance, Standard, Reelcraft, and SATA are essential to our continued growth.” Supplier Awards Presented:
      Supplier of the Year: Gates Corporation Spirit of APH: BBB Industries Rising Star: PICO Outstanding Sales Support: East Penn Manufacturing Outstanding Marketing Support: Bosch Outstanding Technology Support: Aftermarket Auto Parts Alliance Outstanding Training Support: Standard Motor Products In addition, the BENCO Equipment Supplier of the Year award was presented to Reelcraft, and SATA was honored with the Refinish Supply Co. Supplier of the Year award, according to APH.
      Photo (from left): John Bartlett, chairman emeritus of APH; Colby Florea, vice president of sales at Gates; Colin Foster, zone sales manager at Gates; Angela Raney, director of sales at Gates; Kevin Mack, vice president of merchandising at APH; Mike Brage, territory sales manager at Gates; and Corey Bartlett, CEO of APH.
      The post
      link hidden, please login to view appeared first on link hidden, please login to view.
      link hidden, please login to view
    • Counterman
      Advance Auto Parts Appoints Jeff Vining as General Counsel
      By Counterman
      Advance Auto Parts announced that it has appointed Jeff Vining as executive vice president, general counsel and corporate secretary, effective March 2, 2025. In this role, the company said Vining will be responsible for all aspects of the Advance’s legal, corporate governance and compliance functions. Vining will report directly to Shane O’Kelly, president and chief executive officer.
      The company added that Tammy Finley, who currently serves in this role, is retiring and will stay with Advance in an advisory capacity to support the transition. Finley spent 27 years at Advance in the legal, human resources and communications functions.
      link hidden, please login to viewsaid she was vital in leading the company through almost three decades of growth and change management, and, most recently, the divestiture of the Worldpac business. “Jeff’s experience in supporting successful business transformations and driving efficiencies is critical for the success of our strategic action plan,” O’Kelly said. “We are thankful for Tammy’s many contributions over the years along with her passion for Advance and our team members. We wish her all the best as she retires.”
      A news release from
      link hidden, please login to view explained that Vining brings more than 20 years of deep legal expertise within publicly traded companies, including key areas such as corporate governance, M&A, risk management, labor and employment, and litigation. Most recently, he served as general counsel and secretary at Unifi, Inc., where he was responsible for the company’s global legal functions and ensuring compliance with corporate governance requirements. Vining received his Doctorate of Jurisprudence at the University of Richmond School of Law in Richmond, Virginia, and his Bachelor of Science from James Madison University in Harrisonburg, Virginia.

      The post
      link hidden, please login to view appeared first on link hidden, please login to view.
      link hidden, please login to view
    • Advance Auto Parts
      Advance Auto Parts Appoints Jeff Vining as General Counsel
      By Advance Auto Parts
      link hidden, please login to view
    • Counterman
      Parts Authority Announces Leadership Transition
      By Counterman
      Parts Authority announced a leadership transition that will see its current CEO and co-founder, Randy Buller, moving into the role of Chairman of the Board, and the welcoming of Clark Hale as the company’s new CEO, effective March 3, 2025.
      Buller, along with his co-founders, Yaron Rosenthal, David Wotman and Steve Yanofsky, helped transform a once New York-based family business with less than 10 locations into a leading nationally-recognized automotive warehouse distributor with nearly 300 locations in 23 states and Washington, D.C., the company said.
      Using his financial background, entrepreneurial mindset and automotive industry expertise, Buller helped build the business by offering an unparalleled depth and breadth of brand name inventory to customers, focusing on customer service, investing heavily in technology, and valuing team member satisfaction and professional growth,
      link hidden, please login to view explained. “Over the span of 40 years, Randy drafted and executed the Parts Authority roadmap for rapid growth through both organic growth and M&A. As he transitions to the role of Chairman, Randy will continue to be fully available in providing support to Parts Authority, just as he has since 1980,” the company added.
      “I know this feels like a big change, but I am very positive and confident in the future of Parts Authority. I look forward to continuing to do what I love, with people I love, while taking a small step back in the day-to-day. I’m thrilled to be handing the reins to Clark and I am looking forward to working with him to drive Parts Authority’s future success,” said Buller. [A letter from Randy Buller is provided
      link hidden, please login to view.] Parts Authority said Hale brings a wealth of experience and a proven track record to the company. He has been affiliated with Kohlberg & Company since 2019, and has also been serving as a member of the Parts Authority board of directors. 
      “I want to thank Randy and his co-founders for entrusting me with leading the future of Parts Authority. It is an honor to be following in their footsteps in continuing on the legacy and culture of such a great organization,” said Hale. “I am very excited to take on this important next step in Parts Authority’s growth and evolution. I am confident that with our team, we can continue to demonstrate and execute on our commitments to our customers and vendor partners as the leader in the industry.” 
      The post
      link hidden, please login to view appeared first on link hidden, please login to view.
      link hidden, please login to view

×
×
  • Create New...