Shanghai Motor Vehicle Testing Center recently released a test report on the Nexteer Electric Power Steering System (EPS). Through experiments, Nexteer EPS has proved to be able to provide vehicles with better fuel economy and reduce pollutant emissions.
The Shanghai Motor Vehicle Inspection Center carried out exhaust emissions and fuel emissions from cold vehicles after cold start at room temperature by exchanging EPS (including electric steering column, electric column middle shaft, and mechanical steering) provided by Nexteer on the vehicle. Consumption Test Two sets of test items. The test adopted a 1.2L small-displacement MPV of a well-known automobile manufacturer mainly producing small cars. According to the "Light Vehicle Pollutant Emission Limits and Measurement Methods" and "Test Methods for Fuel Consumption of Light Vehicles," the data before and after exhaust gas pollutants and fuel consumption were tested.
This small-displacement MPV originally used a hydraulic power steering system (HPS). After replacement, it used Nexteer EPS. In the exhaust emission test, the emissions of CO, HC and NOx exhaust pollutants were measured after each trip. After tests, the use of EPS provided by Nexteer, CO, HC and NOX emissions of light vehicles are effectively reduced, respectively, reduced by 6.5%, 14.5% and 15.6%.
In order to make the test results more objective, in accordance with the standards of GB/T 19233-2008, the simulated car was tested on fuel consumption in urban areas, suburban areas, and integrated driving environment on the BT test bench. Compared with the HPS, the use of Nexteer EPS vehicles can save about 4.2% of fuel consumption per about 100 kilometers, about 0.33 liters.
EPS is a power steering system that directly depends on the motor to provide assist torque. Compared with HPS, EPS completely discards the power steering oil pumps, hoses, hydraulic oils, conveyor belts, and pulleys mounted on the engine, which are necessary for HPS. Not only does maintenance need to replace the helper oil, inspection pipelines and valves are cumbersome. More importantly, it is completely independent of the engine speed. At low speeds, the boost can be even greater. At high speeds, it can reduce the speed or even not work, saving fuel consumption, reducing pollutant emissions, and significantly increasing The comfort and safety of the vehicle. It is with these advantages that EPS has become the development direction of automotive steering systems.
“In 1999, Nexteer became the first company to launch an electric power steering system (EPS) for the automotive industry.†Mr. Liu Tao, Nexteer’s vice president and chief operating officer of the China Division, said: “With our rich Turning to system design, programming and production expertise, we provide world-renowned car manufacturers such as BMW, Volkswagen, Fiat and Electrolux with products that have reached the international level in terms of safety, functionality and comfort, and are doing their utmost to help They have transitioned from hydraulic power steering systems to electric power steering systems."
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