How should truck-mounted crane owners handle the runaway failure when operating the truck-mounted crane? We are well aware that when a runaway occurs in the diesel engine of the truck-mounted crane, it is of utmost importance to stop the vehicle and turn off the engine promptly; otherwise, the potential consequences could be beyond imagination. But how exactly can an immediate engine shutdown be achieved? Now, let’s explore the relevant emergency measures together with the editor.
Measure 1: Blocking the Intake Pipe
If the diesel engine of the truck-mounted crane is deprived of air intake, it will cease to function. This approach involves physically obstructing the path through which the engine sucks in air. However, it requires caution and precise execution to ensure effectiveness. When blocking the intake pipe, it is essential to use an appropriate tool or material that can create a complete seal and prevent any air from entering. Failure to do so adequately may not result in the desired engine shutdown and could potentially exacerbate the problem.
Let’s delve deeper into this measure. The intake system of the diesel engine is designed to supply a precise amount of air for combustion. By blocking this path, the fuel-air mixture necessary for the engine’s operation is disrupted, causing it to stall. But it’s important to note that this should be done as a last resort and with a clear understanding of the mechanics involved to avoid causing any additional damage to the engine or related components.
Measure 2: Positioning the Accelerator Handle and Utilizing the Decompression Device
Placing the accelerator handle in the no-fuel supply position and activating the decompression device helps eliminate the compression force within the cylinder. This combination of actions can effectively lead to the engine coming to a halt. The decompression device is designed to reduce the compression pressure within the cylinders, making it easier for the engine to stop.
It’s crucial to ensure that the accelerator handle is accurately positioned to cut off the fuel supply. Simultaneously, the decompression device must be operated correctly and at the appropriate time to achieve the desired effect. Missteps in either of these actions might delay or prevent the engine from shutting down promptly.
Measure 3: Loosening the Nut of the High-Pressure Oil Pipe Joint
Using a wrench to loosen the nut of the high-pressure oil pipe joint stops the fuel supply to the diesel engine of the truck-mounted crane, thereby causing the engine to cease operation. This method directly disrupts the fuel delivery system, but it requires careful handling to avoid fuel leakage and potential safety hazards.
When loosening the nut, it’s essential to control the force applied to prevent excessive loosening that could lead to a sudden and uncontrolled fuel spray. Additionally, proper safety precautions should be in place to handle any fuel spillage and to protect against potential fire risks.
Measure 4: Employing Braking During Driving
While driving, engaging a high gear and applying a heavy load, in combination with braking, can reduce the engine speed and subsequently shut down the engine. This approach exploits the resistance and braking force to slow down the engine’s rotational speed until it stops.
However, this method requires a careful balance to avoid overloading the braking system or causing loss of control of the vehicle. It is a more complex and potentially risky measure that should only be employed when other options are not feasible and with a high level of driving skill and awareness.
After the diesel engine of the truck-mounted crane is shut down through these emergency measures, the cause of the runaway failure needs to be identified and addressed based on the principles discussed earlier.
Once the engine is shut down, a thorough inspection of the vehicle should be conducted to determine the root cause of the runaway failure. This might involve checking the fuel injection system, governor mechanism, sensors, and other related components. In some cases, the problem might be straightforward and can be resolved on the spot. However, for more complex or technical faults that cannot be handled independently, it is advisable to send the vehicle to a professional repair factory for detailed diagnosis and repair.
Prompt and accurate troubleshooting and repair are essential to restore the vehicle to normal operation as soon as possible and ensure its reliability and safety for future use.
In conclusion, when faced with a diesel engine runaway failure in a truck-mounted crane, quick and decisive action is necessary. Understanding and correctly implementing these emergency measures can help prevent major damage and ensure the safety of both the vehicle and the operator. However, it is always recommended to follow proper maintenance procedures and regular inspections to minimize the occurrence of such critical failures.
