Turbocharged engine system and air intake adjustment method thereof
An engine system and air intake adjustment technology, which is applied to combustion engines, engine components, machines/engines, etc., and can solve the problems of engine knocking, insufficient engine intake air, and high fuel consumption.
Inactive Publication Date: 2019-01-18
HITACHI AUTOMOTIVE SYST SUZHOU
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Problems solved by technology
[0002] When the existing turbocharged engine is running at low speed and low load, due to the low turbo speed, the supercharging effect is limited, so the air intake of the engine is not sufficient. In addition, there is an intake hysteresis phenomenon during acceleration, which makes Insufficient fuel combustion, high fuel consumption and poor emissions
If the intake air volume of the engine is increased simply by increasing the throttle opening, the fuel consumption of the engine will increase with the increase of the intake air volume, which will make the fuel consumption problem of the vehicle more serious.
[0003] On the other hand, when the existing turbocharged engine is running at high speed and high load, because the turbine speed is extremely high, the air intake is also relatively large, which will easily cause engine knocking and excessive exhaust temperature, so it is easy to damage engine, which in turn affects the performance of the engine
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[0047] Hereinafter, the turbocharged engine system and its air intake adjustment method of the present invention will be described with reference to the accompanying drawings.
[0048] (turbocharged engine system)
[0049] refer to Figure 1 to Figure 4 , the turbocharged engine system 100 of the present invention will be described in detail. in, figure 1 It is a schematic diagram schematically showing the turbocharged engine system 100 of the present invention.
[0050] Such as figure 1 As shown, the turbocharged engine system 100 of the present invention includes an air intake 110 , a turbocharger 120 , an intercooler 130 , an electronic throttle 140 , an internal combustion engine 150 , and an exhaust pipe 160 .
[0051] A certain amount of air enters the turbocharger 120 from the intake port 110 , and after being boosted by the turbocharger 120 , enters the intercooler 130 for cooling, and then enters the internal combustion engine 150 through the control of the electr...
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The invention discloses a turbocharged engine system and an air intake adjustment method. Sufficient air intake volume can be guaranteed during low-speed and low-load operation, and excessive air intake can be avoided during high-speed and high-load operation. The turbocharged engine system is provided with an air intake adjustment device, wherein the air intake adjustment device comprises an air intake adjustment member, an air intake adjustment main pipe, an air intake adjustment bifurcated pipe, an exhaust gas collection and release pipe and a fresh air inlet pipe; a first open and close valve and a second open and close valve are arranged on the air intake adjustment main pipe; a third open and close valve and a fourth open and close valve are arranged on the air intake adjustment bifurcated pipe; a check valve is arranged at the middle part of the fresh air inlet pipe; and by opening and closing of all the valves, a movable piece can move upwards or downwards according to a pressure difference between air entering the upper part and air entering the lower part of the air intake adjustment member to supplement fresh air or EGR gas or to exhaust redundant entering air.
Description
technical field [0001] The invention relates to an engine system, and more specifically relates to a turbocharged engine system and an air intake regulating method thereof. Background technique [0002] When the existing turbocharged engine is running at low speed and low load, due to the low turbo speed, the supercharging effect is limited, so the air intake of the engine is not sufficient. In addition, there is an intake hysteresis phenomenon during acceleration, which makes Insufficient fuel combustion, high fuel consumption and poor emissions. If the intake air volume of the engine is increased simply by increasing the throttle opening, the fuel consumption of the engine will increase with the increase of the intake air volume, which in turn will make the fuel consumption problem of the vehicle more serious. [0003] On the other hand, when the existing turbocharged engine is running at high speed and high load, because the turbine speed is extremely high, the air intak...
Claims
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IPC IPC(8): F02B37/12F02B37/16F02M26/04
CPCY02T10/12
Inventor 丁青松
Owner HITACHI AUTOMOTIVE SYST SUZHOU