英國珀金斯、沃爾沃、mtu、康明斯等常用的柴油發動機上有哪些傳感器與功能的介紹
What are the functions of sensor and British Perkins, Volvo, MTU, Cummings and other commonly used on diesel engine is introduced
一:柴油發動機傳感器的基礎介紹
電控柴油發動機上的傳感器可謂五花八門,其中傳感器類型大致分為壓力傳感器、溫度傳感器、速度與位置傳感器這三類,細分類型大約有十余種。
A: Diesel Engine introduced based sensor
The sensor is making electronic control on diesel engine of a wide variety, including sensor type can be divided into pressure sensor, temperature sensor, speed and position sensor three, there are about more than ten kinds of subdivision type.
如圖為博世電控高壓共軌結構圖
這其中包括:機油壓力和溫度傳感器、溫度傳感器、進氣溫度傳感器、冷卻液溫度傳感器、燃油壓力和溫度傳感器、發動機轉速傳感器、發動機位置傳感器、凸輪軸位置傳感器、曲軸位置傳感器等十余種傳感器。而下面所要介紹的是大多電控柴油機所必備傳感器。
Figure for Bosch electronically controlled high pressure common rail structure diagram
Making including: oil pressure and temperature sensor, temperature sensor, intake air temperature
sensor, coolant temperature sensor, oil pressure and temperature sensor, engine speed sensor, engine position
sensor, camshaft position sensor, crankshaft position sensor and other more than ten kinds of sensors. Which of the following will introduce electronic controlled diesel engine is most necessary for sensor.
二:曲軸轉速傳感器Two: crankshaft speed sensor
以上圖為電控系列發動機的傳感器
結構:磁脈沖式
功用:轉速傳感器采集柴油機轉速信號以便ECU計算循環供油量,還可提供曲軸位置信號以便ECU對噴油正時作出準確控制;輔助轉速傳感器用來作為轉速信號計算曲軸轉角的信號,進行判缸。
安裝位置:飛輪殼上與供給泵上
三:凸輪軸位置傳感器
結構:以磁繞組方式
功用:凸輪軸每轉一圈向ECU提供一個信號,ECU據此確定那個氣缸的活塞處于壓縮行程上止點。
安裝位置:在凸輪軸前端
Above the sensor electronic control engine series
Structure: magnetic pulse
Making making function: the speed sensor to collect the signal of the diesel engine speed to ECU fuel cycle, can also provide the crankshaft position signal
to ECU on the fuel injection timing to make accurate
control; auxiliary speed sensor is used to signal as the rotational speed signal calculation of crankshaft angle, were sentenced to cylinder.
Making making installation location: flywheel shell and supply pump
Three: the camshaft position sensor
Structure: magnetic winding
Making making function: the camshaft rotates one circle to ECU provides a signal, the ECU determines that the cylinder piston at TDC on the compression stroke.
Making making installation location: in front of the cam shaft
四:共軌壓力傳感器
Four: common rail pressure sensor
結構:壓阻式高壓傳感器,最高頻率在1KHz,測量范圍在0-200Mpa
功用:實時測定共軌管中的實際壓力信號并反饋給ECU,增減調節油壓
安裝位置:共軌管上
五:冷卻液傳感器
Structure: the piezoresistive pressure sensor, the highest frequency in 1KHz, measured in the range of 0-200Mpa
Making making functions: real-time measurement of the actual pressure signal common rail tube and feedback to the ECU, or adjust the oil pressure
Making making installation location: common rail pipe
Five: the coolant sensor
結構:負溫度細數的熱敏電阻,其使用范圍為40-130°C
功用:主要用于測量發動機冷卻的溫度,從而進一步精確控制燃油噴射量
安裝位置:在節溫體上。
Structure: the breakdown of the negative temperature thermistor, the use range of 40-130 ° C
Making making function: it is mainly used for the measurement of engine cooling temperature, thus further precise control of fuel injection quantity
Making making installation location: on the thermostat body
六:進氣壓力傳感器
Six: the inlet pressure sensor
結構:半導體壓敏電阻式壓力傳感體
功用:計算空氣量,用來控制空燃比和負溫度細數的熱敏電阻,從而進一步精確控制燃油噴射量。
安裝位置:安裝在進氣歧管
Structure: semiconductor piezoresistance type pressure sensor body
Making making function: the calculation of air volume, used to control the thermal resistor air-fuel ratio and negative temperature breakdown, thus further precise control of fuel injection quantity.
Making making installation: installed in the intake manifold
七: 燃油溫度傳感器
Seven: fuel temperature sensor
結構:負溫度細數的熱敏電阻,其使用范圍為﹣40-130°C。
功用:用于向發動機控制單元提供燃油溫度信號,一般設置在第二級燃油濾清器蓋內。發動機控制單元根據燃油的溫度變化對噴油量進行修正,因為燃油隨溫度升高而膨脹變得密度變小。位置: 在主油管上
Structure: the breakdown of the negative temperature thermistor, the scope for the use of 40-130 ° C.
Making making function: used to provide fuel temperature signal to the engine control unit, usually set at a second grade oil filter cover. The engine control unit
was used to modify the fuel quantity according to the fuel temperature
changes, because the fuel temperature and expansion become density becomes small.
Making making position: in the main pipe
八:機油溫度傳感器
Eight: the oil temperature sensor
結構:負溫度細數的熱敏電阻
功用:用于向發動機控制單元提供發動機的機油溫度,特別是在寒冷氣溫狀態下。
位置:主機油管上
九:結后語
伴隨著電噴柴油機的普及,電控系統在柴油發動機上作用越來越廣。而作為發動機“耳朵”的傳感器們更是遍布在發動機上的每一個細節,時時刻刻監測其工作中的狀態。所以,在日常生活中不要因為它們的小不起眼而忽視它們的重要作用。
Structure: the breakdown of the negative temperature thermistor
Making making functions: to provide the engine oil temperature to the engine control unit, especially in the cold weather condition.
Making making position: the host pipe
Nine: after the words
Making along with popularization of EFI engine, electronic control system in the diesel engine is more and more widely. As the sensor are
engine "ears" is every detail throughout the engine, constantly monitoring the working state of the. So, don't in daily life because of their humble and ignore the important role of their.