燃油压力传感器位于发动机燃油分配管上方。一般来说,油压是4巴。
还有一个燃油油位传感器,位于燃油箱内。4S店技术员,10分钟解决。】 1.节气门位置传感器
功能:节气门位置传感器监测节气门开度,确定怠速、满载和加减速情况,从而实施节气门开度状态。
相应的各种喷油量控制。故障影响:怠速忽高忽低,或造成超速现象。
2.进气门压力传感器
功能:进气压力传感器提供发动机负荷信息,即与发动机相连。
在测量进气管压力时,间接测量进入发动机的进气量,然后通过内部电路将进气量转换成电信号提供给计算机。故障影响:发动机不好启动,或者怠速不稳。
3.空气温度传感器
功能:提供空气温度信息,以校正燃油喷射量和点火正时。
故障影响:怠速低,容易熄火。
4.曲轴角度传感器
功能:提供转速和曲轴相位信息,为喷油正时和点火正时提供参考点。故障影响:发动机无法启动或启动后发动机突然熄火。
5.冷却液温度传感器
功能:监测发动机冷却液的温度,并将其转换成电压信号发送给计算机。ecu根据该信号控制燃油喷射、点火正时和怠速控制。
故障影响:怠速低。
6.氧气传感器
功能:提供混合器浓度信息,修正喷油量,实现空燃比闭环控制,保证发动机实际空燃比接近理论空燃比的主要部件。
故障影响:怠速不稳,消耗过大。
7.爆震传感器
功能:为修正点火正时,实现爆震闭环控制提供爆震信息。
Failure effect: when the detonation is about to occur, the detonation signal point can not be provided, and the computer can not receive the signal "peak value" and can not reduce the ignition advance angle, thus knocking occurs.
8, three-way catalytic converter
Function: The three-way catalytic converter is installed in front of the muffler in the exhaust pipe, which can simultaneously reduce the contents of three pollutants (carbon monoxide co, unburned carbon-oxygen compound hc and oxide nox) in the exhaust gas. When the air-fuel ratio of the engine is close to the theoretical air-fuel ratio, the conversion efficiency of the three-way catalytic converter is high. When the high temperature of 300℃ ~ 800℃ passes through the center of the three-way catalytic converter, the harmful gas is oxidized and reduced by expensive catalysis attached to the ceramic monomer, and converted into harmless gas.
Failure effect: the discharged waste gas can't meet the standard.