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ESP in action
Page 14
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This Bosch-derived ESP refines the existing ABS/EBS system by adding steering input and yaw (lateral acceleration) sensors to the wheel speed sensors used to detect wheel lock-up. All of these sensors are monitored by an ECU which Identifies the abnormal readings which accompany the onset of a skid. When such a situation is detected, the appropriate combination of reduced engine power and individual wheel braking is rapidly applied to remove the cause of the skid and regain control.
During our extended drive around the Midlands in a 313 CM Sprinter van, the ESP never made its presence felt once, which is just as It should be with normal driving In good conditions. But like insurance, it's good to know that it's there and available when you least expect to need it. Other experiences, including those at Mercedes' Unterturkheim proving ground, have proved to us that while it can't completely defy the laws of physics, even in the most extreme conditions it can buy the Myer enough time to get out of trouble.
For a more detailed explanation of how ESP works, check out wviw.bosch.de/k/en/esp.
Although we didn't get to use the ESP, we did try out the optional MSS engine stop/start system. As soon as neutral is selected with the foot or parking brakes applied, the engine shuts down. Restarting is automatic as soon as the clutch • depressed to re-engage a gear. The system. which can be switched off if required, feels strange to start with but soon becomes quite natural. M-B claims a potential fuel saving of 2-13% depending on traffic conditions.