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发表于 15-10-2014 00:29:52
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看了一下Wikipedia的资料，提到在起伏路面上，巡航确实比有经验的司机控制油门要费油，不过在平路上应该还是比较省油的。
巡航也有缺点，下面有提到：
http://en.wikipedia.org/wiki/Cruise_control
Advantages and disadvantages
Some of those advantages include:
（优点）
Its usefulness for long drives (reducing driver fatigue, improving comfort by allowing positioning changes more safely) across highways and sparsely populated roads. This usually results in better fuel efficiency.
（减少司机的长途驾驶疲劳，巡航通常比较省油）
Some drivers use it to avoid subconsciously violating speed limits. A driver who otherwise tends to subconsciously increase speed over the course of a highway journey may avoid a speeding ticket. Such drivers should note, however, that a cruise control may go over its setting on a downhill which is steep enough to accelerate with an idling engine.
（可以避免高速公路上的无意中超速而导致的罚单，当然下坡的时候，还是可能因为惯性加速而导致超速）
However, cruise control can also lead to accidents due to several factors, such as:
（可能导致发生事故的潜在问题-缺点）
The lack of need to maintain constant pedal pressure, which can help lead to accidents caused by highway hypnosis or incapacitated drivers; future systems may include a dead man's switch to avoid this.
（不用持续踩油门，导致司机犯困而发生事故）
When used during inclement weather or while driving on wet or snow- and/or ice-covered roads, the vehicle could go into a skid (although this may be somewhat mitigated by cars equipped with Electronic Stability Control). Stepping on the brake—such as to disengage the cruise control—could result in the driver losing control of the vehicle.
（雨雪天气，路面湿滑，车子可能会失控）
Driving over "rolling" terrain, with gentle up and down portions, can usually be done more economically (using less fuel) by a skilled driver viewing the approaching terrain, by maintaining a relatively constant throttle position and allowing the vehicle to accelerate on the downgrades and decelerate on upgrades, while reducing power when cresting a rise and adding a bit before an upgrade is reached. Cruise control will tend to overthrottle on the upgrades and retard on the downgrades, wasting the energy storage capabilities available from the inertia of the vehicle. The inefficiencies from cruise control can be even greater relative to skilled driving in hybrid vehicles.
（起伏路面上，巡航系统不如老练的司机省油）
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发表于 14-10-2014 22:19:20
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发表于 14-10-2014 22:41:05
发表于 15-10-2014 11:20:13
