Pressure Control of High-Pressure Oil Pipe

Table 1

Symbols and explanation.

Symbol	Explanation	Unit
Q A	The oil supply quantity at the oil supply end A in t time	m^3/s
Q B	Output of fuel injection end in one injection time	m^3/s
ρ	Density of fuel	mg/mm^3
A	The area of the small circular hole area	m^2
E	Modulus of elasticity
P 1	Supply end pressure	Pa
P 2	Total volume of high-pressure oil pipe	Pa
P(t)	Pressure variation function in tube	Pa
V	Internal pressure of high-pressure oil pipe	m^3
T	One working cycle of high-pressure oil pump	s