CN105416057A - Hybrid power energy-saving control system and method for bus - Google Patents

Hybrid power energy-saving control system and method for bus Download PDF

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Publication number
CN105416057A
CN105416057A CN201510859698.7A CN201510859698A CN105416057A CN 105416057 A CN105416057 A CN 105416057A CN 201510859698 A CN201510859698 A CN 201510859698A CN 105416057 A CN105416057 A CN 105416057A
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China
Prior art keywords
pump
motor
control
control assembly
servovalve
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CN201510859698.7A
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Chinese (zh)
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CN105416057B (en
Inventor
吕玉梅
李东阳
陈丽缓
韩旭
黄坤
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北华航天工业学院
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Priority to CN201510859698.7A priority Critical patent/CN105416057B/en
Publication of CN105416057A publication Critical patent/CN105416057A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00Auxiliary drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K31/00Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • B60K31/02Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically

Abstract

The invention discloses a hybrid power energy-saving control system and method for a bus. The system comprises a transmission shaft 1, a control oil pump 2, a pump/motor control assembly 3, a high-pressure pipeline 4, a safety valve 5, a proportional throttle valve 6, an energy accumulator 7, a controller 8 and an auxiliary oil tank 9; furthermore, the pump/motor control assembly 3 is composed of a variable cylinder 3.1, a servo valve 3.2 and a pump/motor 3.3. Energy recovery and reutilization control in the bus braking process is achieved through combined control of the pump/motor control assembly and the proportional throttle valve, so that the energy utilization efficiency of the bus is effectively improved.

Description

A kind of bus mix-driving and energy-saving control system and method

Technical field

The invention belongs to automobile energy-saving control field, particularly a kind of bus mix-driving and energy-saving control system and method.

Background technology

Along with increasingly sharpening of environment and energy problem, the vehicle population risen year by year in the whole world exacerbates the energy-saving and emission-reduction pressure that Vehicle Industry faces further.Just at the product of emphasis research and development energy-saving and environmental protection, take the good opportunity together in countries in the world in the competition in future.

Because urban road is narrow, people's current density large, carrying etc. is waited in bus stop, under city bus is in the operating modes such as starting, acceleration, deceleration and parking for a long time.Therefore, the total problem that the speed of a motor vehicle is low, oil consumption is high, exhaust emission and noise are seriously urban public traffic vehicles.Bus frequent start-stop, must cause the unnecessary consumption of energy, if the energy regenerating that drg can be consumed, when vehicle start accelerates, release recycling, can improve the capacity usage ratio of public transit vehicle undoubtedly.

For overcoming the technological deficiency of bus energy charge, needing badly and a kind of bus mix-driving and energy-saving control system and method are provided.

Summary of the invention

For above-mentioned prior art defect, key issue to be solved by this invention is to provide a kind of bus mix-driving and energy-saving control system and method, for reclaiming and recycling the energy of the frequent brake loss of bus.

In order to the technical matters solving above-mentioned existence realizes goal of the invention, the present invention is achieved by the following technical solutions:

A kind of bus mix-driving and energy-saving control system, comprises transmission shaft 1, control oil pump 2, pump/motor control assembly 3, pressure duct 4, safety valve 5, proportional throttle valve 6, energy storage 7, controller 8, service tank 9; Further, pump/motor control assembly 3 is by variable cylinder 3.1, and servovalve 3.2 and pump/motor 3.3 form.

Wherein: control oil pump 2 and pump/motor 3.3 are coaxially installed on transmission shaft 1; Control oil pump 2 oil suction is connected with service tank 9, and control oil pump 2 force feed mouth is connected with servovalve 3.2 oil inlet port; Pump/motor 3.3 oil suction is connected with service tank 9, and pump/motor 3.3 force feed mouth is connected with proportional throttle valve 6 oil inlet port by pressure duct 4; Proportional throttle valve 6 oil outlet is connected with energy storage 7; Safety valve 5 is connected across between pressure duct 4 and service tank 9, prevents pressure duct 4 from transshipping; Controller output signal is connected respectively to servovalve 3.2 and proportional throttle valve 6.

Further, in pump/motor control assembly 3, servovalve 3.2 oil inlet port is connected with control oil pump 2, and servovalve 3.2 return opening is connected with service tank 9, and servovalve 3.2 oil outlet is connected with variable cylinder 3.1 oil inlet, servovalve 3.2 oil inlet and variable cylinder 3.1 oil outlet; Variable cylinder 3.1 piston is connected with pump/motor 3.3.

The control method of described a kind of bus mix-driving and energy-saving control system, comprises following content:

(1) energy regenerating controls: controller 8 judges the control intention (accelerate, brake) of chaufeur according to engine behavior monitoring, when controller 8 monitor driving engine be in braking mode time, controller 8 outputs a control signal to servovalve 3.2, and then regulate pump/motor 3.3 pivot angle by variable cylinder 3.1 and servovalve 3.2, make pump/motor control assembly 3 be in pump condition, and pump/motor control assembly 3 rotating speed is controlled; In addition, controller 8 outputs a control signal to proportional throttle valve 6, and then realizes the control of pump/motor control assembly 3 torque.Further, controller 8 jointly controls by pump/motor control assembly 3 and proportional throttle valve 6 the two ore control achieving pump/motor control assembly 3 rotating speed and torque, finally realize the control of transmission shaft 1 rotating speed and torque, now, transmission shaft 1 is as power input shaft, driving pump/motor control assembly 3 rotates, and is stored in energy storage 7 by the energy passing ratio flow regulating valve 6 of bus brake loss and becomes hydraulic energy, and the Brake energy recovery completing bus controls.

(2) energy recycling controls: controller 8 judges the control intention (acceleration, braking) of chaufeur according to engine behavior monitoring, when controller 8 monitor driving engine be in acceleration mode time, controller 8 outputs a control signal to servovalve 3.2, and then regulate pump/motor 3.3 pivot angle by variable cylinder 3.1 and servovalve 3.2, make pump/motor control assembly 3 be in motor operating conditions, and pump/motor control assembly 3 rotating speed is controlled; In addition, controller 8 outputs a control signal to proportional throttle valve 6, and then realizes the control of pump/motor control assembly 3 torque.Further, controller 8 jointly controls by pump/motor control assembly 3 and proportional throttle valve 6 the two ore control achieving pump/motor control assembly 3 rotating speed and torque, finally realize the control of transmission shaft 1 rotating speed and torque, now, the hydraulic energy of storage discharges by energy storage 7 passing ratio flow regulating valve 6, pump/motor control assembly 3 is in motor operating conditions, drives transmission shaft 1 outputting power, and the braking energy recycling completing bus controls.

Owing to adopting technique scheme, the present invention compared with prior art has following beneficial effect:

1) compact conformation of the present invention, low cost of manufacture, be convenient to install and implement, the recycle and reuse achieving energy in bus braking procedure controls, and effectively improves the energy utilization efficiency of bus;

2) the present invention has pump/motor control assembly and proportional throttle valve two control variable, has stronger alerting ability.

Accompanying drawing explanation

Fig. 1 represents mechanical erection arrangement plan of the present invention

Fig. 2 represents hydraulic principle of the present invention and hardware configuration system figure;

Fig. 3 represents workflow diagram of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is described in further detail:

It is mechanical erection arrangement plan of the present invention shown in Fig. 1.Driving engine 10 drives wheel 13 by change-speed box 12, and transmission shaft 1 is connected by speed-change gear 11 and between driving engine 10 and change-speed box 12.

A kind of bus mix-driving and energy-saving control method, realize the hydraulic efficiency pressure system of this control method and hardware configuration as shown in Figure 2, its hardware configuration comprises transmission shaft 1, control oil pump 2, pump/motor control assembly 3, pressure duct 4, safety valve 5, proportional throttle valve 6, energy storage 7, controller 8, service tank 9; Further, pump/motor control assembly 3 is by variable cylinder 3.1, and servovalve 3.2 and pump/motor 3.3 form;

Wherein: control oil pump 2 and pump/motor 3.3 are coaxially installed on transmission shaft 1; Control oil pump 2 oil suction is connected with service tank 9, and control oil pump 2 force feed mouth is connected with servovalve 3.2 oil inlet port; Pump/motor 3.3 oil suction is connected with service tank 9, and pump/motor 3.3 force feed mouth is connected with proportional throttle valve 6 oil inlet port by pressure duct 4; Proportional throttle valve 6 oil outlet is connected with energy storage 7; Safety valve 5 is connected across between pressure duct 4 and service tank 9, prevents pressure duct 4 from transshipping; Controller output signal is connected respectively to servovalve 3.2 and proportional throttle valve 6.

Further, in pump/motor control assembly 3, servovalve 3.2 oil inlet port is connected with control oil pump 2, and servovalve 3.2 return opening is connected with service tank 9, and servovalve 3.2 oil outlet is connected with variable cylinder 3.1 oil inlet, servovalve 3.2 oil inlet and variable cylinder 3.1 oil outlet; The piston of variable cylinder 3.1 is connected with pump/motor 3.3.

It is workflow diagram of the present invention shown in Fig. 3.

First, controller 8 judges the control intention (accelerate, brake) of chaufeur according to engine behavior monitoring, when controller 8 monitor driving engine be in braking mode time, controller 8 outputs a control signal to servovalve 3.2, and then regulate pump/motor 3.3 pivot angle by variable cylinder 3.1 and servovalve 3.2, make pump/motor control assembly 3 be in pump condition, and pump/motor control assembly 3 rotating speed is controlled; In addition, controller 8 outputs a control signal to proportional throttle valve 6, and then realizes the control of pump/motor control assembly 3 torque.Further, controller 8 jointly controls by pump/motor control assembly 3 and proportional throttle valve 6 the two ore control achieving pump/motor control assembly 3 rotating speed and torque, finally realize the control of transmission shaft 1 rotating speed and torque, now, transmission shaft 1 is as power input shaft, driving pump/motor control assembly 3 rotates, and is stored in energy storage 7 by the energy passing ratio flow regulating valve 6 of bus brake loss and becomes hydraulic energy, and the Brake energy recovery completing bus controls.

Further, when controller 8 monitor driving engine be in acceleration mode time, controller 8 outputs a control signal to servovalve 3.2, and then regulate pump/motor 3.3 pivot angle by variable cylinder 3.1 and servovalve 3.2, make pump/motor control assembly 3 be in motor operating conditions, and pump/motor control assembly 3 rotating speed is controlled; In addition, controller 8 outputs a control signal to proportional throttle valve 6, and then realizes the control of pump/motor control assembly 3 torque.Further, controller 8 jointly controls by pump/motor control assembly 3 and proportional throttle valve 6 the two ore control achieving pump/motor control assembly 3 rotating speed and torque, finally realize the control of transmission shaft 1 rotating speed and torque, now, the hydraulic energy of storage discharges by energy storage 7 passing ratio flow regulating valve 6, pump/motor control assembly 3 is in motor operating conditions, drives transmission shaft 1 outputting power, and the braking energy recycling completing bus controls.

Protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.

Claims (2)

1. a bus mix-driving and energy-saving control system, is characterized in that: it comprises transmission shaft (1), control oil pump (2), pump/motor control assembly (3), pressure duct (4), safety valve (5), proportional throttle valve (6), energy storage (7), controller (8), service tank (9); Further, pump/motor control assembly (3) is by variable cylinder (3.1), and servovalve (3.2) and pump/motor (3.3) form.
Wherein: control oil pump (2) and pump/motor (3.3) are coaxially installed on transmission shaft (1); Control oil pump (2) oil suction is connected with service tank (9), and control oil pump (2) force feed mouth is connected with servovalve (3.2) oil inlet port; Pump/motor (3.3) oil suction is connected with service tank (9), and pump/motor (3.3) force feed mouth is connected with proportional throttle valve (6) oil inlet port by pressure duct (4); Proportional throttle valve (6) oil outlet is connected with energy storage (7); Safety valve (5) is connected across between pressure duct (4) and service tank (9), prevents pressure duct (4) from transshipping; Controller output signal is connected respectively to servovalve (3.2) and proportional throttle valve (6).
Further, in pump/motor control assembly (3), servovalve (3.2) oil inlet port is connected with control oil pump (2), servovalve (3.2) return opening is connected with service tank (9), servovalve (3.2) oil outlet is connected with variable cylinder (3.1) oil inlet, servovalve (3.2) oil inlet and variable cylinder (3.1) oil outlet; The piston of variable cylinder (3.1) is connected with pump/motor (3.3).
2. a kind of bus mix-driving and energy-saving control method according to claim 1, is characterized in that the method comprises following content:
First, controller (8) judges the control intention (accelerate, brake) of chaufeur according to engine behavior monitoring, when controller (8) monitor driving engine be in braking mode time, controller (8) outputs a control signal to servovalve (3.2), and then regulate pump/motor (3.3) pivot angle by variable cylinder (3.1) and servovalve (3.2), make pump/motor control assembly (3) be in pump condition, and pump/motor control assembly (3) rotating speed is controlled; In addition, controller (8) outputs a control signal to proportional throttle valve (6), and then realizes the control of pump/motor control assembly (3) torque.Further, (8 jointly control by pump/motor control assembly (3) and proportional throttle valve (6) two ore control achieving pump/motor control assembly (3) rotating speed and torque to controller, finally realize the control of transmission shaft (1) rotating speed and torque, now, transmission shaft (1) is as power input shaft, driving pump/motor control assembly (3) rotates, be stored in energy storage (9) by the energy passing ratio flow regulating valve (6) of bus brake loss and become hydraulic energy, the Brake energy recovery completing bus controls.
Further, when controller (8) monitor driving engine be in acceleration mode time, controller (8) outputs a control signal to servovalve (3.2), and then regulate pump/motor (3.3) pivot angle by variable cylinder (3.1) and servovalve (3.2), make pump/motor control assembly (3) be in motor operating conditions, and pump/motor control assembly (3) rotating speed is controlled; In addition, controller (8) outputs a control signal to proportional throttle valve (6), and then realizes the control of pump/motor control assembly (3) torque.Further, controller (8) jointly controls by pump/motor control assembly (3) and proportional throttle valve (6) the two ore control achieving pump/motor control assembly (3) rotating speed and torque, finally realize the control of transmission shaft (1) rotating speed and torque, now, the hydraulic energy of storage discharges by energy storage (7) passing ratio flow regulating valve (6), pump/motor control assembly (3) is in motor operating conditions, drive transmission shaft (1) outputting power, the braking energy recycling completing bus controls.
CN201510859698.7A 2015-12-02 2015-12-02 A kind of bus mix-driving and energy-saving control system and method CN105416057B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101070864A (en) * 2007-06-25 2007-11-14 哈尔滨工业大学 Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator
US20090100830A1 (en) * 2007-09-28 2009-04-23 Klaus Schneider Hydraulic drive system
CN201857238U (en) * 2010-11-08 2011-06-08 中信重工机械股份有限公司 Constant deceleration safety braking system for mine hoist
CN103790875A (en) * 2014-02-28 2014-05-14 吉林大学 Hydraulic transmission system enabling energy recovery
CN104595292A (en) * 2015-02-05 2015-05-06 长安大学 Rotary drilling rig main winch system based on energy recovery of energy accumulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101070864A (en) * 2007-06-25 2007-11-14 哈尔滨工业大学 Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator
US20090100830A1 (en) * 2007-09-28 2009-04-23 Klaus Schneider Hydraulic drive system
CN201857238U (en) * 2010-11-08 2011-06-08 中信重工机械股份有限公司 Constant deceleration safety braking system for mine hoist
CN103790875A (en) * 2014-02-28 2014-05-14 吉林大学 Hydraulic transmission system enabling energy recovery
CN104595292A (en) * 2015-02-05 2015-05-06 长安大学 Rotary drilling rig main winch system based on energy recovery of energy accumulator

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