Connect with us

News

Tesla points to better range and efficiency with compact power steering patent

The Tesla Model 3's minimalistic interior. (Credit: Tesla)

Published

on

Tesla’s electric cars are already among the most efficient vehicles on the market, and this is shown by the immense gap between the range and efficiency of the company’s vehicles compared to their competitors from veteran automakers. Part of the reason behind this is Tesla’s continued improvements in its vehicles, which are rolled out and adopted as soon as they are refined and ready. 

One of these improvements appears to have been teased in a recently-published patent application. Simply titled “Steering System for a Vehicle,” the document describes a smart, novel way of designing a power steering system that is more compact and less power-hungry. In the patent’s background, Tesla remarked that conventional power steering systems, which are usually hydraulically operated, are mostly bulky and space-consuming.

This is due to power steering systems utilizing a number of components that include cylinders, pumps, hoses, and control valves, to name a few. Hydraulic power steering systems also have complex designs, which add cost to a vehicle. Lastly, conventional power steering systems generally require a large amount of power to function. With this in mind, Tesla argues that there is a need for a new power steering system that is simpler, smaller, and more power-efficient. 

Illustrations showing different perspective views of Tesla’s steering system patent. (Credit: US Patent Office)

Tesla’s novel power steering design involves fewer parts than the conventional system used in most vehicles. The electric car maker describes the design in its patent in the description below. 

“The steering system includes a drive motor having a motor shaft. The steering system also includes a first gear reduction stage for receiving a first rotational input from the motor shaft and providing a first rotational output. A first gear meshes with a second gear of the first gear reduction stage via a helical gear mesh. The steering system further includes a second gear reduction stage for receiving the first rotational output from the first gear reduction stage and providing a second rotational output. 

“The second gear reduction stage may include at least one of a strain wave gearing, a worm drive, and a planetary gearing. In case the second reduction stage is a strain wave gearing, the second gear reduction stage includes an ovular coupler, a flexible coupling, an outer spline, and a plurality of bearing members disposed between the ovular coupler and the flexible coupling. The steering system includes an output shaft for receiving the second rotational output from the second gear reduction stage.”

Advertisement

Tesla notes that its smaller, power-saving steering system, apart from being more power-efficient and compact, also includes several failsafes, which could, in turn, increase a vehicle’s safety. The company’s patent mentions “sacrificial or failsafe components,” which are designed to safeguard a vehicle’s sensitive components during the event of a breakdown. Such a design will likely contribute to Tesla’s electric cars and their already-stellar safety ratings. 

An illustration of a steering system for a vehicle, according to certain embodiments of Tesla’s patent. (Credit: US Patent Office)

“In some embodiments, steering system 102 has been shown to provide a 10% improvement over a hydrolytic steering system. Additionally, steering system 102 is a compact unit that consumes lesser space as compared to other steering systems that are commercially available in markets. Further, steering system 102 does not require large amount of additional power for operation. FIG. 6 illustrates a failure mode of steering system 102 in which one or more bearing members 244 of steering system 102 fail. Bearing members 244 of steering system 102 are designed to withstand high loads so that they do not fail during normal vehicle operation. However, bearing members 244 may be designed to withstand only a predetermined threshold of load. As a result, bearing members 244 fail when they are loaded beyond the predetermined threshold. 

“For example, a bearing member 258 may eventually fail along a shear plane 260 when loaded beyond the predetermined threshold. Alternatively, bearing members 244 may undergo a bending failure, or any other type of failure. In such a situation, one bearing member 244 is a sacrificial or failsafe components, thereby safeguarding other components of vehicle, for example, drive motor 204 or an engine, against breakdown or seizing. More particularly, the one bearing members 244 fails, ovular coupler 238 locks and rotates with flexible coupling 240. Thus, steering system 102 can still be operated to allow vehicle to be driven for a certain distance and parked at an appropriate location. Bearing member 244 fails according to a sheer mechanism or another failure mechanism. Further, failed bearing member 258 can be replaced and vehicle can be reinstated without incurring any additional losses.”

It remains to be seen if Tesla’s compact power steering system will be adopted for the company’s upcoming vehicles. That being said, such a system is a perfect match for EVs such as the Tesla Semi, the Tesla Pickup Truck, and the Model S and X Plaid Powertrain variants. These are all large vehicles, and their success in the market will likely be determined in no small part by their range and efficiency. In this light, every single innovation that could optimize these vehicles’ efficiency will most definitely be appreciated. After all, the less power is consumed by subsystems such as a vehicle’s power steering unit, the more power there is to turn an electric car’s wheels. 

The full text of Tesla’s compact, efficient power steering system could be accessed here.

Advertisement

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

Advertisement
Comments

News

Tesla rapidly progresses on Model Y Performance production

New drone images from noted drone operator and Gigafactory Texas observer Joe Tegtmeyer show Tesla is moving forward quickly in terms of its progress in producing the new Model Y Performance.

Published

on

Credit: Tesla

Tesla has rapidly progressed in the production of its most anticipated Model Y trim level: the Model Y Performance.

New drone images from noted drone operator and Gigafactory Texas observer Joe Tegtmeyer show Tesla is moving forward quickly in terms of its progress in producing the new Model Y Performance.

The vehicle is being spotted more frequently at the factory located just outside of Austin, with what appears to be the first units rolling out to outbound lots:

Advertisement

In the United States, Tesla unveiled the Model Y Performance on September 30, the newest iteration of the fastest trim level of the best-selling car in the world for the past two years. It was launched on the very last day of the $7,500 electric vehicle tax credit in the United States.

It featured a handful of performance improvements, including a 0-60 MPH acceleration rate of 3.3 seconds, a trim from the 3.5 seconds the 2025 version offered.

Additionally, the range has gone from 277 miles to 308 miles, a notable improvement in terms of how far it can travel on a charge.

There are also a handful of hardware changes that Tesla made to improve its aerodynamic performance, which all likely can be attributed to the boost in speed and acceleration, as well as range.

The vehicle was initially launched in Europe, which was not surprising, especially as Tesla was testing the new Performance trim at the famed Nurburgring in Germany.

Advertisement

Deliveries are currently slated for late November, but some orders are getting projections of mid-December for their Model Y Performance, which would help Tesla bolster its end-of-year delivery figures and follow up on an extremely bullish finish to Q3, which was the company’s strongest performance in history.

Continue Reading

Elon Musk

Twitter co-founder Jack Dorsey endorses Elon Musk Tesla pay package

Dorsey framed the pay package as an engineering and governance crossroads for Tesla.

Published

on

Twitter co-founder and Square CEO Jack Dorsey has publicly backed Elon Musk’s leadership ahead of Tesla’s pivotal shareholder vote, which is expected to be decided later today at the company’s 2025 annual meeting. 

Dorsey framed the pay package as an engineering and governance crossroads for Tesla.

Dorsey’s public nod framed as an engineering defense of Musk

In a post on X, Dorsey weighed in on Tesla’s post about being in a “critical inflection point.” As per the Twitter-co-founder, the vote on Musk’s 2025 performance award is not about compensation. Instead, it’s about ensuring the path for the company’s engineering in the coming years. 

“This is not about compensation. it’s about ensuring a principled (and exciting!) engineering approach to the company’s future,” Dorsey wrote on his post, later stating that users of Cash app with TSLA shares would be able to vote for the CEO’s proposed 2025 performance award. 

Elon Musk appreciated Dorsey’s endorsement, responding to the Twitter co-founder’s post with a heart emoji. Musk has been pretty thankful for the support for is fellow tech executives, also thanking Michael Dell recently, who also advocated for its proposed 2025 performance award.

Advertisement

Musk’s support

While Elon Musk’s 2025 performance award has received opposition from proxy advisors such as Glass Lewis and ISS, it has received quite a lot of support from longtime bulls such as ARK Invest, and, more recently, Schwab Asset Management following calls from TSLA retail shareholders. 

“Schwab Asset Management’s approach to voting on proxy matters is thorough and deliberate. We utilize a structured process that focuses on protecting and promoting shareholder value. We apply our own internal guidelines and do not rely on recommendations from Glass Lewis or ISS. In accordance with this process, Schwab Asset Management intends to vote in favor of the 2025 CEO performance award proposal. We firmly believe that supporting this proposal aligns both management and shareholder interests, ensuring the best outcome for all parties involved,” Charles Schwab told Teslarati.

Continue Reading

News

Here’s what changed in the Tesla Cybercab since last year’s unveiling

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Published

on

Credit: wudapig/Reddit

An apparent production-ready prototype of the Tesla Cybercab has been spotted testing in public, and it revealed several subtle but notable design updates compared to its 2024 prototype. 

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Subtle design refinements

The new photo of the Cybercab prototype was initially posted on the r/TeslaLounge subreddit, where it proceeded to receive numerous responses. As per the user who posted the image, the photo was taken in California, and the vehicle was reportedly fitted with a steering wheel. 

Based on the image, the Cybercab appears to have received a revised tail design, which now rises slightly, likely to improve aerodynamics. Tesla also appears to have shortened the rear body panel below the lighting section. Other updates include a slightly redesigned rear bumper, red reflectors repositioned farther from the wheel arches, and unpainted side repeater cameras that seemed to have been moved slightly forward, likely for better visibility.

The Cybercab’s B-pillar has also been shifted forward and now sits slightly lower, accompanied by larger door panels that likely make entry and exit easier. The vehicle’s tires are no longer painted either, nor do they have an extended wheel cover. Interestingly enough, the prototype was also fitted with side mirrors, though these are likely just for regulatory testing purposes and would be removed in the vehicle’s final production version.

Advertisement

An In-and-Out tease

At the end of October, the Tesla AI team teased some of the Cybercab’s progress with a lighthearted “Animal Style” Halloween post featuring the autonomous two-seater being driven through an In-N-Out drive-through by employees in costume. Longtime Tesla watchers noted that the In-and-Out photos continue a long-standing tradition of Tesla driving its prototypes through the fast food chain’s drive-throughs.

The In-and-Out photos of the Cybercab also revealed some updates that have been implemented on the vehicle’s front end. These included what appears to be segmented DRLs and headlamps, actual turn signals, and a splitter that’s a lot sharper. Some noted that the vehicle looks sharper than the prototypes from last year’s We, Robot event, but this also resulted in the Cybercab looking a bit less “Cyber” now.

Continue Reading

Trending