PUBLISHER: ResearchInChina | PRODUCT CODE: 1396040
PUBLISHER: ResearchInChina | PRODUCT CODE: 1396040
“ Passenger Car Intelligent Steering Industry Report, 2023” released by ResearchInChina combs through and studies the status quo of passenger car intelligent steering and the product layout of OEMs, suppliers, and supply chains, and predicts the future development trends of passenger car intelligent steering.
From 2020 to 2023, the penetration of EPS in the Chinese passenger car market remained at a high level. In the next stage, EPS will head in the direction of high performance.
By the installation position of booster motor, EPS can be divided into four types: column EPS (C-EPS), pinion EPS (P-EPS), rack EPS (R-EPS) and dual pinion EPS (DP-EPS). In terms of transmission efficiency from high to low, the ranking is R-EPS/DP-EPS > P-EPS > C-EPS. As mid-to-high-end smart electric vehicles boom, the steering system is being upgraded from C-EPS to R-EPS and DP-EPS. The content-per-car value of the latter two is higher than that of C-EPS, and the iteration of the EPS product structure brings value increment.
L3 driving assistance requires EPS to still have a certain power-assisting capability in the event of a single point failure. Under this requirement, redundant EPS becomes the key component of L3+ intelligent driving systems.
At present, OEMs and suppliers have made related product layout:
Redundant EPS will become a core technology in L3+ intelligent driving scenarios before mass production and application of steer-by-wire.
Rear wheel steering, as a supplement to front wheel steering, was originally used in large luxury cars and SUVs, such as BMW 5/7 Series and Audi Q7/8. On the one hand, rear wheel steering technology based on electrical operation is easier to implement on an all-electric platform. On the other hand, electric vehicles on an all-electric platform generally have a long wheelbase (the battery must be placed between the front and rear axles) which increases the turning radius, while rear wheel steering technology offers much higher flexibility. In recent years, as electrification has become widespread rapidly, rear wheel steering has landed on more models such as Xpeng X9, AITO M9 and IM L7.
At present, many OEMs and suppliers make many deployments in steer-by-wire, but with a low product penetration. Nexteer Automotive forecasts that it is difficult for steer-by-wire to gain pace in the next 2 or 3 years.
The policy environment has become more relaxed in recent years. The development of steer-by-wire is driven by the demand for intelligent chassis and stimulated by policies. From the implementation of the new national automotive steering standard to the release of Steer-by-wire Technology Roadmap, steer-by-wire has been production-ready in terms of policies.