Research on the Power Recovery of Diesel Engines with Regulated Two-Stage Turbocharging System at Different Altitudes

Table 2

Operating modes of the turbine bypass valve.

Ambient; pressure	Engine speed r/min
	1400	1500	1600	1700	1800	1900	2000	2100	2200
70 kPa	Closed	Closed	Regulated	Regulated	Regulated	Regulated	Regulated	Regulated	Regulated
80 kPa	Closed	Regulated	Regulated	Regulated	Regulated	Regulated	Open	Open	Open
90 kPa	Regulated	Regulated	Regulated	Regulated	Open	Open	Open	Open	Open
100 kPa	Regulated	Regulated	Regulated	Open	Open	Open	Open	Open	Open