Diagnosis Method of Transmission Controller Power Supply Fault
A technology of power supply failure and diagnosis method, which is applied in the direction of electrical testing/monitoring, etc., and can solve problems such as damaged transmission, abnormal internal operation, and no diagnostic solution, and achieve the effect of solving damage
Active Publication Date: 2019-06-28
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0003] The transmission controller (TCU) is powered by 12V of the whole vehicle, and is divided into 5V and 8V through the internal circuit to provide electric energy for the relevant solenoid valves, sensors and other electronic components in the transmission. If the power supply of the TCU fails, it will cause internal Abnormal work, or even damage to the transmission
[0004] However, there is currently no effective diagnostic solution for grading detection of TCU power supply faults and taking corresponding measures
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[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0032] The present invention provides an embodiment of a method for diagnosing a power supply fault of a gearbox controller, as figure 1 shown, including:
[0033] Step S1, detecting the power supply voltage of the gearbox controller in real time;
[0034] Specifically, this step can be performed after the entire vehicle is powered on, and of course it can also be performed after the power supply failure is resolved, which will be described in detail below.
[0035] Step S2, according to the voltage fault classification strategy, deter...
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The invention discloses a transmission controller power supply failure diagnosis method which includes the steps: detecting the power supply voltage of a transmission controller in real time after a complete vehicle is powered on; judging whether the failure level of the power supply voltage is a first failure level or a second failure level according to a voltage failure ranking strategy, and transmitting alarm signals and forcing a clutch to disengage after definite diagnosis if the failure level is the first failure level; limiting a gear at a current position and starting first timing after definite diagnosis; transmitting the alarm signals and forcing the clutch to disengage if the power supply voltage is not restored to normal voltage after first timing is finished. According to TCU(transmission control unit) electrical specifications, failure ranking diagnosis is performed, different processing modes are adopted according to different levels of power supply failure, and the shortcomings of incapability of sufficiently combining electrical performances of a TCU and one-sided or single processing are reasonably avoided. Moreover, the problem of damage to internal parts of theTCU due to TCU power supply failure can be effectively solved.
Description
technical field [0001] The invention relates to the field of gearbox controllers, in particular to a method for diagnosing power supply faults of a gearbox controller. Background technique [0002] A typical wet dual-clutch automatic transmission realizes torque conversion and output through different output shafts through the switching of two clutches and different synchronizer actions. During the entire transmission process of power flow, the dual-clutch will command to combine and release. [0003] The transmission controller (TCU) is powered by 12V of the whole vehicle, and is divided into 5V and 8V through the internal circuit to provide electric energy for the relevant solenoid valves, sensors and other electronic components in the transmission. If the power supply of the TCU fails, it will cause internal Abnormal work, or even damage to the transmission. [0004] However, there is currently no effective diagnostic solution to detect TCU power supply faults in differ...
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IPC IPC(8): G05B23/02
Inventor 王祺明张友皇徐瑞雪周沛泽
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD