Danfoss Best Point Control Data sheet

Data Sheet

Propel Application Software

Best Point Control (BPC)

Danfoss Best Point Control (BPC) BPC is an innovative propel application software that can dramatically increase the efficiency of a machine.

By detecting the power required for the operating conditions and automatically adjusting the engine speed to meet optimum efficiency points, BPC adds instant value to virtually any application.

As a PLUS+1® compliant software block, BPC offers plug-and-perform integration into existing work flows.

Regardless of the application, BPC helps to reduce development time and almost instantly increases machine control.

Target applications:

•

Telehandler, wheel-loader, dumper, sweeper, forklift trucks, forestry machines etc.

•

Mobile machines demanding better fuel efficiency and require a high level of controllability.

Features

Basic functions

•

One drive mode for all operating points and use cases

•

Machine and engine overspeed protection

•

Hydrostatic ratio control: intelligent adjustment of hydraulic pump and hydraulic motor depending on the load

•

Drive pedal scaling: operator can adjust the pedal resolution to achieve better machine controllability and performance

•

Minimum engine speed adjustment: to ensure high machine performance and to provide the oil flow, required for other sub-systems like work functions

•

Calibration routines to simplify machine start-up

•

No Engine PPU: accepts J1939 standard message, no need for additional PPU.

•

Vehicle speed limitation

Flexibility

•

Transmission control: flexible integration of multiple different final drive solutions (e.g. 2MT)

•

Modular software design: fit to a variety of application types

•

Work hydraulic pressure sensor: works in conjunction with other sub-systems like Work Function Control

•

Functional safety: designed according to safety standards for shorter time to market

Performance and Fuel Economy

•

Best Point Control: depending on the machine’s load situation, the diesel engine and the hydrostatic drivetrain are controlled at their best efficiency points

•

Vehicle speed control: driver is controlling the machine movement and software controls the diesel engine and hydrostatic ratio

•

Power management functions: electronic pressure limiter and antistall for more machine performance

•

Temperature compensation for predictable performance

Comprehensive technical literature online at powersolutions.danfoss.com

Danfoss | May 2016 AI00000272en-US0102 | 1

System Requirements

Current Engine

Power on CAN

Delta Vehicle Speed

Ratio

Request

Vehicle Speed

Request

Engine

Power

Control

Engine Power

Request

Pedal Signal

Hydraulic

Ratio

Control

Vehicle

Speed

Control

External Engine

Speed Request

Ground Speed

External Engine

Power Request

Pump SP

Motor SP

Engine SP

Trans-

mission

Control

Output Conditioning

Drive Control

Transmission

Control

Engine Control

Engine

Speed

Control

Engine

Set Point

Input Conditioning

•

CAN controlled Diesel engine

•

H1 pump with embedded controller incl. swashplate angle sensor

•

H1 bent axis motor with electric proportional control

•

Final drive configuration e.g. dropbox or dual motor gearbox

BPC Block Diagram

Modular software structure for flexible adaption to customer specific requirements

Other available Danfoss literature

•

H1 Axial Piston Pumps – Product Line Overview, L1012919

•

H1 Axial Piston Motors – Product Line Overview, L1019304

System Inputs and Outputs

The following inputs and outputs to be considered for a typical BPC baseline configuration

•

Drive direction switch (FNR) optional via CAN

•

Drive pedal (redundant)

•

Drive enable optional via CAN

•

Manual engine speed setpoint

•

Drive pedal scaling

•

Inch pedal (redundant)

•

Park brake switch

•

Seat switch

•

CAN connection to the engine controller, CAN messages according J1939

•

Engine speed signal, optional via CAN

•

Hydro motor speed signal

•

Pump control (pre-configured on embedded controller)

•

Hydro motor proportional control

•

Park Brake control

•

Feedback signal Park Brake released

•

Work hydraulic pressure sensor

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