Diesel engine camshaft signal panel
A diesel engine and camshaft technology, which is applied in engine control, machine/engine, mechanical equipment, etc., can solve the problems of influence, increase the manufacturing cost of camshaft gear, and the inaccurate reading data of the sensor, so as to improve the accuracy and reduce the The effect of unit cost
Inactive Publication Date: 2011-02-16
DALIAN MINGYANG IND
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This structure is drilled and reamed on the web plate of the camshaft gear, and then the processed cylindrical pin is interference-fitted on the camshaft gear. After the assembly, the position error of the pin will be increased, resulting in inaccurate reading data of the sensor. Affects the timing of fuel injection into the cylinder; the additional process also increases the manufacturing cost of the camshaft gear
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[0010] Such as figure 1 As shown, five holes are drilled on the web plate of the camshaft gear 5 of the four-cylinder diesel engine at a specific angle to the timing mark tooth 7 as the signal hole 6, and the clockwise sequence is: 60°44′, 150°44′ , 225°44', 240°44', 330°44', the position error of the signal hole 6 can be controlled within 0.2mm. The specific angle is determined by the position of the piston in the cylinder 4, and is reflected on the camshaft gear 5 through the specific transmission ratio of the timing gear. When the piston moves to this position, the temperature in the cylinder 4 is most favorable for diesel oil Mixing of air.
[0011] Adjust the signal-taking mode of the sensor 1, from the existing method of sending a signal to the computer 2 when it senses the magnetic force, to send a signal to the computer 2 when it senses that there is no magnetic force. When the camshaft gear 5 is running, the magnetic sensor generates magnetic force, and when the sig...
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The invention discloses a diesel engine camshaft signal panel, solving the technical problems of the traditional device by adopting a hole drilling signal. In order to achieve the goal, the invention adopts the following technical scheme that a hole is drilled on a diesel engine camshaft gear radial plate to serve as the position of a signal hole; five signal holes need to be drilled on a four-cylinder diesel engine camshaft gear radial plate; the angles of the timing mark teeth of the signal holes and the camshaft gear are clockwise arranged to be 60.44 degrees, 150.44 degrees, 225.44 degrees, 240.44 degrees and 330.44 degrees; and the degree error of the positions of the signal holes can be controlled within 0.2mm. The magnetic force disappears when the signal holes operate below a magnetic sensor; the sensor is adjusted to change the magnetic force interruption into a signal sent to a computer; and the computer sends a start oil injection signal to an oil spray pump. The invention has the advantages that the accuracy of the sensor picking up a signal is improved, the reaming process, the pinning process and the like are not needed and the one-piece cost of the camshaft gear is reduced by about 20 percent.
Description
technical field [0001] The invention belongs to a diesel engine fuel injection pump control device, in particular to a diesel engine camshaft signal disc. Background technique [0002] At present, most diesel engines control the timing of the fuel injection pump by installing induction pins (usually five pins for four-cylinder engines and seven pins for six-cylinder engines) on the camshaft gear web plate at a specific timing angle. When injecting oil into the cylinder. The principle is that the iron pin rotates with the camshaft gear, and the sensor sends a signal to the computer by sensing the angle change between the magnetic signal and the magnetic signal, and the computer controls the timing of the fuel injection pump to inject fuel into the cylinder by identifying the signal. This structure is drilled and reamed on the web plate of the camshaft gear, and then the processed cylindrical pin is interference-fitted on the camshaft gear. After the assembly, the position er...
Claims
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Inventor 凌彤
Owner DALIAN MINGYANG IND