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

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

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6 years ago

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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.”

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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.

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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.

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Tesla’s new Model S and X spotted, but they leave a lot to be desired

The Model S and Model X testing mules spotted by The Kilowatts have few minor visual changes.

Published

5 hours ago

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May 23, 2025

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Credit: Tesla

Tesla has been hinting for a few months now that the flagship Model S and Model X would be getting some attention in 2025 as the vehicles continue to be sold in extremely low volumes.

Both models seem to be under the knife, especially as their newest versions were spotted in California earlier this week.

However, images of the vehicles seem to show that Tesla is not planning a major overhaul, which begs the question: why even do it in the first place?

Tesla makes a decision on the future of its flagship Model S and Model X

The Model S and Model X are grouped with the Cybertruck in Tesla’s quarterly delivery releases, and Q1 saw just 12,881 units of the three cars delivered. The Cybertruck likely made up the majority of this number, as some outlets reported around 6,400 deliveries of the all-electric pickup in Q1.

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This is unconfirmed.

The Model S and Model X have stuck around for “sentimental reasons,” according to CEO Elon Musk, who said back in 2021:

“I mean, they’re very expensive, made in low volume. To be totally frank, we’re continuing to make them more for sentimental reasons than anything else. They’re really of minor importance to the future.”

However, the cars seem to be in need of a serious refresh. As Tesla changed up the exterior aesthetic on both the Model 3 and Model Y, recent images captured of the Model X by The Kilowatts seem to show this is not the strategy with the Model X or Model S:

As we can see, the overall aesthetic of the X, if this is what Tesla plans to release, has literally no changes from a purely visual standpoint. There is the addition of the front bumper camera, which was first implemented on the Cybercab unveiled in October 2024, and then on the new Model Y this year.

There are some new 20″ wheels, and the interior has been fitted with ambient lighting.

The Model S looked to be relatively the same, other than these few hardware changes, including a rear diffuser on this Plaid that was spotted:

While these changes are welcome and should be beneficial, they don’t seem like they will encourage major sales growth, which might be something Tesla is okay with.

Admitting the two cars are low volume and not contributors to the company’s long-term goals, Musk is likely willing to just upgrade things to make these more compatible and better functioning with the Full Self-Driving suite.

Earlier this year, VP of Vehicle Engineering Lars Moravy said the S and X were not going anywhere and would get “some love” before the end of 2025:

“Just give it a minute. We’ll get there. The upgrade a couple of years ago was bigger than most people thought in terms of architecture and structure of the car got a lot better, too. But, we’ll give it some love later this year and make sure it gets a little bit…you know, with the stuff we’ve been putting in 3 and Y. Obviously, with 3 and Y, the higher volume stuff, you’ve gotta focus there.”

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It seems these strategies have held true — the S and X appear to be getting what the 3 and Y got with the ambient lighting and front bumper camera (at least on the Model Y).

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Tesla set for ‘golden age of autonomous’ as Robotaxi nears, ‘dark chapter’ ends: Wedbush

Tesla is set to win big from the launch of the Robotaxi platform, Wedbush’s Dan Ives said.

Published

7 hours ago

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May 23, 2025

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Tesla (NASDAQ: TSLA) is set to kick off its own “golden age of autonomous growth” as its Robotaxi platform nears launch and a “dark chapter” for the company has evidently come to a close, according to Wedbush analyst Dan Ives.

Ives has jostled his price target on Tesla shares a few times already this year, usually switching things up as the market sways and the company’s near-term outlook changes. His price target on Tesla has gone from $550 to $315 to $350 back to $500 this year, with the newest adjustment coming from a note released early on Friday.

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As CEO Elon Musk has essentially started to dwindle down his commitment to the Department of Government Efficiency (DOGE) altogether, Ives believes that Tesla’s “dark chapter” has come to a close:

“First lets address the elephant in the room…2025 started off as a dark chapter for Musk and Tesla as Elon’s role in the Trump Administration and DOGE created a life of its own which created brand damage and a black cloud over the story….but importantly those days are in the rear-view mirror as we are now seeing a recommitted Musk leading Tesla as CEO into this autonomous and robotics future ahead with his days in the White House now essentially over.”

Ives believes Tesla’s launch of Robotaxi should be the company’s way to unlock at least $1 trillion in value alone, especially as the Trump White House will fast-track the key initiatives the automaker needs to get things moving in the right direction:

“The $1 trillion of AI valuation will start to get unlocked in the Tesla story and we believe the march to a $2 trillion valuation for TSLA over the next 12 to 18 months has now begun in our view with FSD and autonomous penetration of Tesla’s installed base and the acceleration of Cybercab in the US representing the golden goose.”

There are some concerns moving forward, but none of which relate to the AI/autonomous play that Ives primarily focuses on within the Friday note. Instead, they are related to demand in both Europe and Asia, as Ives said, “there is still wood to chop to turn around Model Y growth” in both of those markets.

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Nevertheless, the big focus for Ives is evidently the launch of Robotaxi and the potential of the entire autonomous division that Tesla plans to offer as a ride-sharing service in the coming months. Ives also believes a 50 percent or more penetration of Full Self-Driving could totally transform the financial model and margins of Tesla moving ahead.

Aware of the setbacks Tesla could encounter, Ives still believes that Tesla will establish itself as “the true autonomous winner over” and that investors will recognize the AI vision the company has been so bullish on.

Ives pushed his price target to $500. Tesla shares are down just under 1% at the time of publication. They are trading at $337.88 at 11:45 on the East Coast.

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SpaceX Starship gets FAA nod for ninth test flight

The FAA has given the green light for Starship’s ninth test flight.

Published

1 day ago

on

May 22, 2025

By

(Credit: SpaceX)

SpaceX has received FAA approval for the ninth test flight of the Starship rocket. The approval was delayed due to the federal agency finishing its comprehensive safety review of the eighth flight earlier this year.

The FAA said in a statement that it has determined that SpaceX has “satisfactorily addressed the causes of the mishap, and therefore, the Starship vehicle can return to flight.”

The eighth test flight occurred back on March 6. SpaceX completed a successful liftoff of Starship and the Super Heavy Booster, before the two entered stage separation a few minutes after launch.

Starship Flight 8: SpaceX nails Super Heavy booster catch but loses upper stage

The booster returned and was caught by the chopsticks on the launch pad, completing the second successful booster catch in the program’s history. However, SpaceX lost contact with Starship in the upper atmosphere.

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The ship broke up and reentered the atmosphere over Florida and the Bahamas.

The debris situation caused the FAA to initiate a mishap investigation:

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The FAA said it will verify that SpaceX implements all the corrective actions on Flight 9 that it discovered during the mishap investigation.

There is no current confirmed launch window, but the earliest it could take off from Starbase is Tuesday, May 27, at 6:30 p.m. local time.

To prevent any injuries and potentially limit any damage, the FAA has stayed in contact with various countries that could be impacted if another loss of vehicle occurs:

“The FAA is in close contact and collaboration with the United Kingdom, Turks & Caicos Islands, Bahamas, Mexico, and Cuba as the agency continues to monitor SpaceX’s compliance with all public safety and other regulatory requirements.”

The agency has also stated that the Aircraft Hazard Area (AHA) is approximately 1,600 nautical miles and extends eastward from the Starbase, Texas, launch site through the Straits of Florida, including the Bahamas and Turks & Caicos.

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For flight 8, the AHA was just 885 nautical miles.

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