BMW电子式监测机油量的原理是什么,可靠吗,有没不灵的时候?
突发奇想，原谅我钻技术牛角尖了。。 这个,,真不知道,,等专家来解答,, 请庞博士棉花糖这些实操高手来回答。 不懂的飘过，无非就是感应器吧，这没有什么大技术。。。 generally, there are two types of oil level sensors.1. optical sensor. it measures the light transmittance by infrared light. due to the high deflection angle of air / oil, its very easy to determine the level. however, these sensors are extremely expensive and very unlikely to be used on bmw's
2. floating sensor. they have internal floater and floater controls a potentiometer. i believe most bmw's use this type.
anything electrical sensors are less robust than mechanic dip stick. that why millions if not billions of bmw owners have converted to dipstick 本帖最后由 绿色 于 2010-11-12 00:27 编辑
棉兄的回答全是English，英文实在没看懂，google之...
一般来说，有两种类型的油位传感器。
1。光学传感器。它可以测量的红外光的透光率。由于高空偏转角/油，它很容易确定的水平。然而，这些传感器非常昂贵，不太可能在宝马使用。
2。浮动传感器。他们有内部漂浮物和漂浮物的控制电位器。我相信大多数的宝马都使用这种类型。
最后一句话google也没搞懂，哪位大拿帮忙翻译一下。。。 本帖最后由 巴依尔 于 2010-11-12 10:58 编辑
也来参加一把英文测试，来猜猜最后一句的意思：
任何电子的传感器都不如机械的量油尺耐用更可靠。这也就是为什么无数的BMW车主已经转用量油尺。 本帖最后由 creedxz 于 2010-11-12 12:13 编辑
anything electrical sensors are less robust than mechanic dip stick. that why millions if not billions of bmw owners have converted to dipstick
mianhuatang 发表于 2010-11-12 00:21 http://bbs.bmwsky.com/images/common/back.gif
谢谢，解释得很充分，让我们学到不少东西！
能改的话我也想改，就是苦于不知该如何下手。。 forget about it, too much work for you to do.
typical conversion involves:
1. drain the oil
2. remove the oil pan
3. remove sensor and plug with M15x1.5 plug
4. drill on opposite side of the pan and install dipstick tube
5. defeat low oil level warning. usually install correct value resistor / cap 确实自己搞不了。。不知道4s给不给搞。。