Turbocharger User’s Manual(2)<\/p>\n
IV. The usage of the\u00a0turbocharger\u00a0with waste gate
\n\u00a0\u00a0\u00a0To improve the low speed performance of the\u00a0engine, a turbine rotor with a smaller diameter is required to reduce the inertia of the rotor in order to accelerate faster and to increase a fast pressure when the\u00a0engine\u00a0works at a lower speeds. As a result when the engine works in a high speed, the\u00a0engine\u00a0burst pressure becomes too high and the machinery load can exceed their limits. In order to make the turbocharger have a good match and not lead to excessive engine loads under rated speed, we developed several kinds of turbochargers with waste gate. The opening and closing of the bypass are controlled by the compressor pressure. When the pressure is too high, the actuator\u2019s control lever opens the waste gate, part of the exhaust gas flows around the turbine into the exhaust system. Which does not only solve the questions about the low speed performance but also too high burst pressure in the cylinder.
\n\u00a0\u00a0\u00a0We have two kinds of turbocharger with the waste gate:
\nA.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The actuator is fixed on the turbine housing
\nB.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The actuator is fixed on the compressor cover
\nTo the following matters you need to pay attention when using the\u00a0turbocharger
\n1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The position of the turbocharger must be arranged reasonably, that is to say, the actuator should be far away from the exhaust tube as far as possible in order to avoid overheating caused by radiation
\n2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Don\u2019t adjust compressor\u2019s angle to turbine housing for the\u00a0turbocharger\u00a0which actuator, rod and control lever in line during the installation
\n3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The angle of the compressor cover and turbine housing must be right and make the actuator, rod and control lever in line during the installation
\n4.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The exhaust tube should be big enough to avoid high pressure
\n5.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Don\u2019t take up the actuator by the drawbar and avoid to bend it
\n6.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Ensure the\u00a0turbocharger\u00a0being installed on the engine correctly and don\u2019t use the actuator as a step or a handle when the engine being repaired.
\n7.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Except to make a routine inspection to the axis and radial direction movement of the control lever, the actuator can\u2019t be repaired.
\n8.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The actuator has been set correctly according to the engine match request. If it is adjusted freely, the following breakdown may happen.
\nIf the opening pressure set lower, the waste gate would open in lower pressure. If the engine working in high speed the air-fuel ratio becomes smaller and makes fuel combustion bad, at the same time the engine reduces power, the exhaust temperature goes high and emission in exhaust will exceed the standard.
\n\u00a0\u00a0If the opening pressure set higher, the\u00a0turbocharger\u00a0would work in high speed, and makes air pressure become high, the bursting pressure becomes high, the valves and positions of the engine would be damaged early, the impeller would be in fatigue and bears of turbocharger would be worn out.
\nV: Operating
\n1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Starting
\na.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0The engine should be in idle condition for more than 5 minutes before high load is demanded. If the\u00a0engine\u00a0starts after just has run for 30 minutes, the idle time can be short.
\nb.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0If the lubrication or the filter of the engine is renewed, or the\u00a0engines did not work for more than one week, and the engines run in idle condition, the oil-in connector should be unlocked until the oil leaks. Before demanding high load the engine should be run in idle condition in 5 minutes
\n2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Working
\na.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Oil-in pressure should be 0.25-0.45 Mpa when the\u00a0engine\u00a0is operating
\nb.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Lubricating oil pressure and temperature, air-inlet temperature and the\u00a0turbocharger\u2019s speed should not exceed the specification
\nc.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Defect abnormal noise and vibration of the\u00a0turbocharger\u00a0timely. If experienced, stop the engine runs and shoot the trouble or the engine will be destroyed
\nd.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Avoid the\u00a0engine\u00a0runs in idle conditions in a long time. Because, when the engine runs in idle condition, the pressure of the compressor side and turbine side is lower than the lubrication oil pressure in the bearing cover, which can cause the oil leakage of the compressor side and turbine side
\n3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Stopping
\nDon\u2019t stop an\u00a0engine\u00a0under full-load suddenly unless under an emergency situation occurs, reduce load gradually idle for 5 minutes and stop the engine.
\n\u00a0\u00a0The operating method, accelerating-cutoff-taxing, is strictly prohibited for engines used for motor-driven vehicles. The oil pump doesn\u2019t work after the engine is stopped, and the turbocharger being at high temperature without lubricating oil circulating through it would be damaged.<\/p>","protected":false},"excerpt":{"rendered":"
Turbocharger User’s Manual(2) IV. The usage of the\u00a0turbocharger\u00a0with waste gate \u00a0\u00a0\u00a0To improve the low speed performance of the\u00a0engine, a turbine rotor with a smaller diameter is required to reduce the inertia of the rotor in order to accelerate faster and to increase a fast pressure when the\u00a0engine\u00a0works at a lower speeds. As a result when […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2427","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"yoast_head":"\n