Fuel Injection and Hydraulics
Fundamentally Based Thermo-hydraulic Simulation
See the Fuel Injection and Hydraulics Brochure (PDF)
GT-SUITE can be used to design, analyze, and optimize all variants of fuel injection and
hydraulic components and systems. Typical applications include:
• Fuel Injection
- Common rail, direct/port injection, unit injectors, pump line-nozzle
- High and low pressure systems and their interaction
- Diesel, gasoline, and other alternative fuels (E85, DME, LPG, etc.)
- Solenoid, piezo, electro-hydraulic, or mechanical actuation
• General Hydraulics
- Hydraulic valvetrains, cam phasers, engine compression release brakes
- Mobile hydraulics
- Braking, power steering, and wet clutches
Detailed component modeling is facilitated by the flexible higher-level fluid-mechanical
templates (FMTs), which model fluid structure interaction. They allow rapid building of any
injection or hydraulic model. Users can also create their own library of compound
components with an easy-to-use graphical programming method or with user subroutines
Common rail system with detailed high pressure pump and injectors built from FMTs.
Physical Models
The GT-SUITE flow solver provides a solution of the compressible 1-D Navier-Stokes
equations (conservation of mass, momentum, and energy). Being built on fundamental
principles, it can accurately model mixtures of species. This is important to modeling of
cavitation and aeration (dissolved and free gases), and tracking of these vapor species as
they move through the system. It is thus exceptionally adapted for applications to modern
high pressure common rail systems (>2500 bar). Of particular importance is that it always
solves the energy equation which gives it a key advantage over "isothermal” solutions.
Fast Solver
Despite the level of detail that it offers, GT-SUITE provides the fastest solver on the market.
The speed advantage is particularly prominent in large multi-component system simulations.
System Integration - Hydraulic Valvetrain and Cam Phasing
For hydraulic valvetrain and engine compression release brake applications, integration of
the hydro-mechanical system with the detailed GT-POWER engine model is of paramount
importance; instantaneous cylinder and port pressures affect the valve lift, and the converse
is also true. With GT-SUITE, the easy integration enables automatic handling of these
interactions and system level optimization within a single tool.
GT-SUITE is uniquely capable of system level optimization for cam phasing applications.
Oil pump size can be optimized to reduce BSFC with constraints on phaser response time.
This type of simulation requires a model of the cam phaser, spool valve and oil circuit.
Additionally, a detailed valvetrain is required to calculate shaft torques on the phaser.
Finally the engine model is required to calculate BSFC. All these systems can be modeled
in GT-SUITE, and the user can choose from many levels of detail for each system.
System Integration - Injection and Combustion
Predictive injector models are easily integrated with GT-POWER, whose combustion model
predicts heat release rate, NOx, and other quantities based on the injection profile. This
combination allows a simultaneous analysis and optimization of injection and
combustion.
Product Highlights:
- Advanced pipe models solving Navier-Stokes
- Thermo-hydraulic: always solves energy equation
- High-level templates for component design
- Choose from 1D to 3D multi-body dynamics
- Automated creation of flow model from 3D CAD data
- Frequency dependent flow friction
- Fundamental cavitation model
- Transient aeration model
- Transport and track vapor and gases
- Pipe wall compliance
- Gerotor, gear, vane and other pumps
Injection:
- Detailed solenoid or piezo actuator models with electromagnetic library
- 3-D MBD with EHD solution at all contacts (detailed pump analysis)
- Detailed helical and spur gear models for timing drive analysis
- Rigid, torsional, or bending options for injection pump cam shaft
- Detailed journal bearing models
General Hydraulics:
- Integrate hydraulics with detailed GT-POWER engine model
- Geometrically based predictive pump models
- Detailed cam phaser and spool valve templates
Mobile Hydraulics:
- 2-D or 3-D multi-body dynamics linked to hydraulics
- Integrate hydraulics with detailed or mean value GT-POWER engine models for fuel economy
and thermal management
 For more information contact:(or contact us online) |
|
| Gamma Technologies, Inc. 601 Oakmont Lane, Suite 220 Westmont, IL 60559 USA |
Tel. Fax. (630) 325-5849 Email:CAE@gtisoft.com Web:www.gtisoft.com |
APPLICATIONS
Engine Performance
Test Pressure Analysis
Exhaust Aftertreatment
Acoustics
SiL, HiL, real-time
Vehicle, driveline
Hybrid Vehicles
Cooling Systems
AC and Rankine
Lubrication and bearings
Fuel Injection
Valvetrain, camshaft
Cranktrain, crankshaft
Chain, gear, belt drive