Federal-Mogul Powertrain To Launch Miniaturized Version Of Rotocap Valve Rotator

Federal-Mogul Powertrain To Launch Miniaturized Version Of Rotocap Valve Rotator

The valve rotator is the first for four-valve-per-cylinder light-vehicle engines, according to the company.

BARSINGHAUSEN, Germany – Federal-Mogul Powertrain said it will launch a new, smaller version of its Rotocap valve rotator at IAA Cars 2017 in Frankfurt.

The valve rotator is the first for four-valve-per-cylinder light-vehicle engines, according to the company.

With an outer diameter between 20 and 25 millimeters, the miniaturized design allows the Rotocap to package into the valve assembly on automotive powertrains.

“Rotocap provides the enhanced valve-rotation control required to compensate the challenges caused by reduced valvetrain lubrication and engine down-speeding – two main design trends to achieve lower emissions and improve fuel efficiency,” Federal-Mogul said.

The new mini Rotocap will be marketed alongside Federal-Mogul Powertrain’s existing valve-rotator products.

“The design function of a Rotocap has been proven in the heavy-duty sector, where often engines run too slowly to generate consistent valve rotation,” explained Gian Maria Olivetti, chief technology officer for Federal-Mogul Powertrain.Today´s non-clamping cotters used in light vehicles allow free rotation of the valve, transmitting spring loads via beads and grooves. However, this free valve rotation is limited in a speed range below 2500 rpm due to low dynamic effects. We can now apply the Rotocap technology to light vehicles, where down-speeding trends and increasing urban traffic density require engines to operate for prolonged periods at low speeds, and therefore may require forced valve rotation. Hybrid applications operating in a limited rpm range will also benefit from this technology.”

Why Valve Rotation Matters

Valve rotation ensures an even distribution of temperature around the seat, increasing durability by reducing local distortion and avoiding blow-by and crack formation across the sealing surface. In addition, rotation reduces wear on other components in direct contact with the valve.

Rotocap eliminates uncontrolled rotation that normally – by torsion of the valve spring or by miscellaneous resonances – is transferred to the valve during its opening and closing movement, according to Federal-Mogul Powertrain. It is replaced with motion through a defined angular movement that only takes place as the valve opens. This controlled movement can be relied upon across the whole engine-speed range, according to the company.

Rotocaps also reduce abrasive wear of the valve-seat area because the valve no longer rotates as it closes.

“This is particularly beneficial on engines designed with reduced oil consumption on the valvetrain or engines using alternative fuels (e.g. LPG, CNG, ethanol) with generally higher seat-wear ratios than gasoline or diesel,” the company added.

At IAA Cars 2017, Federal-Mogul Powertrain will exhibit a range of core valvetrain products such as valves, cotters and valve rotators, including its alternative-design Rotocoil, which uses a single garter spring in place of the balls and ramps. The company will be at Booth E33 in Hall 4.1 from Sept. 12-15.

You May Also Like

Auto Care Association Certified as a Great Place to Work

“This prestigious award is a testament to the association’s commitment to creating an inclusive, supportive and dynamic work environment for its employees,” Auto Care said.

The Auto Care Association announced it has been certified as a Great Place to Work.

“This prestigious award is a testament to the association’s commitment to creating an inclusive, supportive and dynamic work environment for its employees,” Auto Care said in a news release.

With a remarkable 95% of employees affirming that the Auto Care Association is a great place to work, the organization stands out significantly above the national average. This recognition is based on direct feedback from employees, provided as part of the Great Place to Work’s rigorous, data-driven methodology.

UniClutch Expands North American Footprint with 2 Additional SKUs

With the second iteration of the UniClutch system, the brand is reaching even more drivers.

UniClutch
AMSOIL Introduces New OE 0W-40 100% Synthetic Motor Oil

The new OE 0W-40 is primarily for newer RAM HD trucks equipped with the 6.4-liter Hemi engine.

AMSOIL 0W40 synthetic motor oil
UniClutch Launches Clutch System in the United States

UniClutch’s dual-core technology significantly boosts torque capacity without compromising drivability, according to the company.

UniClutch
Victor Reinz Reinzosil Sealant Added to Spicer CV Service Kits

Victor Reinz RTV silicone is resistant to fluids, including mineral and synthetic oils, lubricants, gasoline, diesel fuel, greases, water and detergents.

Dana RTV Sealing

Other Posts

HD Repair Shops Report Increases in Counter Sales, Labor Rates

The data comes from a Fullbay report published in partnership with ATA’s Technology and Maintenance Council.

Heavy Duty Repair
Applications Open for Federated Car Care Scholarships

Interested students should complete and submit their applications at AutomotiveScholarships.com by March 31.

BendPak Names Expert Automotive Primary Distributor in Las Vegas Valley

Under the agreement, Expert Automotive Equipment will offer and support equipment sold under the BendPak, Ranger, Cool Boss and Autostacker brands.

Expert Automotive
Auto Care Association Leaders Visit Northwood University

Auto Care President and CEO Bill Hanvey was the guest lecturer for several Northwood automotive aftermarket courses at its Midland campus.

Bill Hanvey Auto Care Northwood