【正文】 not robust to variation or tolerant of faults. Very little diagnostic information is available for troubleshooting ? 非常簡單和有效，然而，這些變化和誤差并不穩(wěn)定，對那些故障很少提供診斷信息。 2022/3/12 康躍增壓器 39 Vane Position Control in Actuator ? Actuation controls vane position with internal feedback驅(qū)動(dòng)控制葉片位置的內(nèi)部反饋 This control has the added functionality of controlling vane position as an intermediate variable. Unfortunately, very little value is derived from this. 2022/3/12 康躍增壓器 40 Added Diagnostics ? Actuation controls vane position and passes signal to ECU驅(qū)動(dòng)控制葉片位置和傳送信號給 ECU 2022/3/12 康躍增壓器 41 ? The vane position is controlled as an intermediate variable and the actual position passed to a diagnostic module. When the boost pressure does not meet the boost target, use of the vane position/vane position target can aid correct diagnosis of the fault. If changes to the vane position target do not result in a change in vane position, there is a fault with the VGT. If the VGT is at the end of it’s travel, when it should not be, or the vane position follows the target, the fault must be elsewhere—boost connections, failed EGR valve, failed turbo CHRA, failed boost sensor, etc. ? 葉片的位置是由可變數(shù)據(jù)和實(shí)際診斷的數(shù)據(jù)控制，當(dāng)推動(dòng)壓力沒有達(dá)到推動(dòng)點(diǎn)時(shí)，葉片位置 /葉片位置點(diǎn)也會(huì)發(fā)生不準(zhǔn)確的診斷。如果葉片位置點(diǎn)的改變并沒有帶動(dòng)葉片位置的改變，那么 VGT肯定有故障，如果 VGT隨著變動(dòng)，葉片位置隨著葉片位置點(diǎn)變動(dòng)，那故障發(fā)生在其他地方，如助推器連接點(diǎn)， EGR閥門，渦輪中間體，傳感器等。 ? 2022/3/12 康躍增壓器 42 Advanced Control System for VG Turbo VG渦輪控制系統(tǒng)的優(yōu)勢 ? Open Loop Function Acts as Integral Term in PID 2022/3/12 康躍增壓器 43 Turbo Speed Limits ? Speed sensor is cascaded in vane position control to increase stability and limit turbo speed ? 速度傳感器是葉片位置控制提高穩(wěn)定性和渦輪限速的重疊 2022/3/12 康躍增壓器 44 ? When a speed is sensor is installed in the turbocharger and fed into the control system, it can be “cascaded” in the control function as an intermediate variable. Most of the time, the turbo speed functions as a dummy variable, with little impact on the overall control. However, limits on turbo speed can be used to prevent the control system from asking for a turbo speed that is higher than the maximum allowable turbo speed—or lower than what is desired for transient acceleration from idle. ? 當(dāng)轉(zhuǎn)速傳感器安裝在渦輪增壓器并反饋到控制系統(tǒng)，作為一個(gè)中間變量，在控制功能上它有可能是是“級聯(lián)”。在大多數(shù)情況下，作為虛擬變量的增壓器的高速功能，幾乎沒有影響的總體控制。然而，渦輪轉(zhuǎn)速的限度可用于預(yù)防控制系統(tǒng)，防止渦輪速度過高，或者過低。 2022/3/12 康躍增壓器 45 ? A more sophisticated approach is to define a maximum allowable speed for each value in the boost table. This adds robustness to the turbocharger control. ? 一個(gè)更先進(jìn)的辦法是在推動(dòng)盤上的每個(gè)值確定一個(gè)可允許的最大速度。這增加了渦輪增壓器能動(dòng)性。 2022/3/12 康躍增壓器 46 EGR and VGT Control ? The EGR Valve and VGT control both change the flow into the turbine ? 廢氣再循環(huán)閥門和 VGT控制共同改變進(jìn)入渦輪的流動(dòng) ? Their functions have to be separated for stable control—one should be open loop and the other closed loop 他們的功能必須穩(wěn)定獨(dú)立 一個(gè)打開回油管，一個(gè)關(guān)閉回油管 ? A feedforward function needs to be created to adjust the VGT controller for the EGR valve movements 2022/3/12 康躍增壓器 47 ? Changes of EGR valve position or VGT position affect the pressure of the exhaust in the exhaust manifold. The pressure in the exhaust manifold affects the EGR flow and also the turbine power (and thus the boost pressure). Two devices cannot control the same upstream pressure. One has to control the upstream pressure and one has to be a mapped function, otherwise system stability will not be robust. ? 廢氣再循環(huán)閥門位置或者 VGT位置的改變會(huì)影響排氣管道的排氣壓力。排氣管道的排氣壓力會(huì)影響 EGR流動(dòng)和渦輪功率（和減少推動(dòng)壓力）。兩種裝備在向上壓力下不能控制到相同的程度。一個(gè)必須控制向上的壓力，而另一個(gè)必須達(dá)到對應(yīng)的功能。否則系統(tǒng)就不會(huì)到達(dá)相對穩(wěn)定。 2022/3/12 康躍增壓器 48 ? In addition, feedforward needs to be implemented. For example, when the EGR valve is opened, flow is diverted away from the turbine to the EGR system. The vanes must be closed further to produce the same power for the pressor from less flow. Feedforward allows this to happen before an error is generated and can be responded to. ? 另外，前饋需要加以完善。例如，當(dāng)廢氣再循環(huán)閥門打開，氣流會(huì)從渦輪轉(zhuǎn)移到廢氣再循環(huán)系統(tǒng)。葉片必須關(guān)閉，以便為壓氣機(jī)產(chǎn)生相同的能量。 2022/3/12 康躍增壓器 49 電輔助 基本型 旁通式 可變噴嘴 可變壓氣機(jī) 二級增壓 康躍增壓器產(chǎn)品研究方向 2022/3/12 康躍增壓器 50 Matching Data匹配數(shù)據(jù) ? A plete set of requirements will assist Kangyue in meeting ENGINE COMPANY’s turbocharger goals 一系列完整的資料將幫助康躍達(dá)到發(fā)動(dòng)機(jī)廠對增壓器的要求目標(biāo) 2022/3/12 康躍增壓器 51 Thank you for your attention! 感謝關(guān)注