Special tool for detecting automobile idle speed

Abstract

The invention relates to a special tool for detecting automobile idle speed. A supporting plate is fixedly arranged on a clamping strip; a supporting strip is arranged on the supporting plate; positioning disks are fixed at two ends of the supporting strip; one end, provided with threads, of a threaded rod penetrates through inner holes of the two positioning disks; the middle part of a section, positioned in the two positioning disks, of the threaded rod is provided with a stop ring; a thread end of the threaded rod is connected with a screw cap of a turntable; and a limitator is sleeved on the clamping strip. When the special tool is in use, an inverted V-shaped opening of a claw is hung at a joint of a throttle steel cable at the top end of an acceleration pedal; the clamping strip on a supporting frame supports a convex part in an automobile; and the limitator is used for clamping ribs in an automobile body to ensure that the supporting frame is fixed with the automobile body. A rocking handle on a throttle control turntable is rotated clockwise, and the threaded rod drives the throttle steel cable under the action of the screw cap to ensure that an automobile engine achieves a required idle rotating speed. The special tool is simple and stable to operate, can finish a detection once, and has a very good effect of maintaining the engine at a certain appointed rotating speed during the detection of high and low idle speeds of the automobile.

Description

technical field [0001] The invention relates to a vehicle testing tool, in particular to a special tool for testing the idle speed of a vehicle. Background technique [0002] Cars leave the factory must be strictly inspected, and the existing automobile inspection technology clearly requires testing the emission content of pollutants when the car is idling and double idling. Since the engine needs to be kept at several different idle speeds during this test, this test is also called the high and low idle speed test. [0003] Generally, when a car performs high and low idle speed detection, it takes about 40 seconds from the start to the completion, of which 30 seconds is to maintain the engine speed at about 3600 rpm. Because most of the current domestic automobile inspection lines are carried out by stepping on the accelerator pedal manually, especially when the engine speed is maintained at about 3600 rpm, it is difficult to keep the speed stable by stepping on the accele...

AI Technical Summary

Problems solved by technology

Because most of the current domestic automobile inspection lines are carried out by stepping on the accelerator pedal manually, especially when the engine speed is maintained at about 3600 rpm, it is difficult to keep the speed stable by stepping on the accelerator pedal, and the speed can easily exceed the allowable range of detection

Once the speed exceeds the allowable range, the inspection needs to be carried out again, which is extremely time-consuming and labor-intensive, and will affect the cadence of the assembly line of the automobile inspection line

[0004] According to incomplete statistics, the one-time success rate of maintaining a stable speed by manually stepping on the accelerator pedal is about 50%, and the detection efficiency is extremely low.

Images