Prepare Technical Paper On
Hydraulically actuated Electronic Unit Injection (HEUI)
Submitted To
Dr. Hoi Dick Ng
MECH 6761
Vehicular Internal Combustion Engine
SUBMITED BY:
BHARGAV PATEL #27716176
MITESH CONTRACTOR #7673078
CONCORDIA UNIVERSITY
Contents
ABSTRACT 3
1.1 Introduction: 4
1.2 HEUI system 4
1.3 HEUI System Components:- 6
1.3.1 HEUI Injectors: 6
BASIC COMPONENTS OF INJECTORS: 6 Basically there are three types of injectors exist. 6
1.3.2 Low pressure oil system: 7
1.3.3 High-pressure oil system: 8
Injection control pressure regulator (ICPR): 8
Injection Cycle 9
Fill cycle 9
Main injection 9
End of injection 9
1.3.4. The Electronic Control Module (ECM) is the "brain" or center of the engine control system. 9
References 11
List of Figure
Figure 1 HEUI vs Conventional fuel system 4
Figure 2 HEUI system 5
Figure 3 HEUI Injectors 6
Figure 4 A-type, B type, Digital valve injector 7
Figure 5 low pressure oil system 7
Figure 6 high pressure oil system 8
Figure 7 Injector pressure regulator 8
Figure 8 Fill cycle, End of main injection, Main injection 9
Figure 9 ECM 10
ABSTRACT
In the past, in diesel engine fuel pressure was controlled mechanically and depending on the camshaft. Due to this geography lots of problems occurs like engine emission, engine torque, engine efficiency etc. To overcome these problem or for the better performance caterpillar invented new technology called Hydraulically actuated Electronic Unit Injection (HEUI) fuel systems.
In 2002 a joint project between International Navistar and the Ford Motor Company was born. “The goal of this project was to create an engine that was fuel efficient, emission compliant and would be able to outperform all of the competition” (Banks Power). With over 2 million ford super duty’s equipped with the 7.3l Powerstroke engine on the road, the new engine would have big shoes to fill. The engine that was to replace the outdated, underpowered and overall inadequate 7.3l Powerstroke was the International Navistar 6.0l turbo diesel.
The power system consists of a four-stroke engine, a carburettor to transform incoming fuel into steam, a obstruct to control the air-fuel ratio, transmission, and drum brakes. A cylindrical piston, made of aluminium alloy as most people
Task M2.1 – Relationship between landing gear weight switches and the nature of the landing gear indications and warnings.
For fuel injections the overall set up tends be on the higher priced side, and at times can weigh more than traditional technology. Everything aside this technology makes it less difficult to adjust the fuel to adapt to factors like, track conditions, or perhaps the rider’s preferences. The program works by pumping fuel into an injector, which then sprays the fuel into the body of the throttle. Thus sending a signal to inject a calculated amount of fuel, after receiving information from various sensors. Technology of this type can be extremely beneficial for the average rider, with sensors to monitor things like crank position, throttle position, engine temperature, air temperature, and barometric pressure.
As we all know people are where we see the biggest problems in security breaches and problems on any computer or network system. People need to understand what they are allowed and not allowed to do, this is where policies, procedures, and training come in to play.
The world we live in is surrounded by diesel engines. They are on the freeways, railways, airways, and are one of the leading electricity producers in the world. They are also becoming more popular in automobiles. These engines are efficient and reliable and they are getting very sophisticated. However, the physics behind these engines has not changed.
In the operating conditions T1-IRI8, the average fuel consumption of diesel and CNG buses is decreased by 6.5% than in the operating conditions T1-IRI2. In these operating conditions, flow/capacity ratio is higher. This is indicated by bigger difference between average design and operating speeds (about 12km/h).
A feed pump delivers the fuel through a filter unit to the high pressure piston pumps. The pump compresses the fuel to a pressure of 1000bar. It is then delivered into the high pressure fuel rail; this fuel pressure is independent of engine speed and injected fuel quantity. The ECU controls injectors to inject fuel into the combustion chamber by actuating solenoid valve. The system pressure, the duration of injection and the size and shape of the injection nozzle determine the fuel quantity injected. Pressure in the
The performance of a diesel truck and a gas burner truck are very different, but either one can be advantageous depending on its use. The horsepower of the diesel truck averages around 360, but can easily be modified with plug and go tuners that can increase HP to over 500 while the gas burner is at an all time high around 420 HP in the new v8 engines. The gasser may prevail in horsepower, but the diesel dominates in torque. The gasser tops out around 460 lb/ft while the diesel blows it away at 765 lb/ft. The towing capacity is the game changer for the diesel truck compared to the gasser. The gasser starts to struggle around 12,000 pounds at high RPMs, but the diesel is still running smoothly around 17,500 pounds. It is hard for the gasser’s towing power to beat the towing power of
Diesel is going to be the fuel that will control the world just like gasoline is today. Clean diesel is something that seems unreachable but it is closer than people think. Diesels now are Cleaner than ever and it it going to out do any other form of power for cars. Although other fuels and forms of power produce no emissions, diesel engines can be made to produce less harmful pollutants and be more efficient. There may be a few negative characteristics about diesel engines. But, the positive characteristics that they have out weight the bad things about them. To keep the diesels clean the process of how they work needs to be known.
2. “ Because of their efficiency and durability, diesel engines have become the standard in powering trucks and buses. Other heavy vehicles and mobile equipment, including bulldozers and cranes, are also powered by diesel engines, as are many commercial boats, and some passenger cars and trucks. Diesel technicians handle many kinds of repairs. They may work on a vehicle’s electrical system, make major engine repairs, or retrofit exhaust systems with emission control systems to comply with pollution regulations. Diesel engine maintenance and repair is becoming more complex as engines and other components use more electronic systems to control their operation. For example, fuel injection and engine timing systems rely
The growing dependence of many countries, especially the USA and Europe on the imported oil and the daily increase of oil price and the heightened concern on the global warming and the environmental pollutions which has forced many car manufacturing companies to study the new and innovative techniques in solving this very important issue.
Do you love fast cars and trucks? Do you wonder how they work? Have you ever seen a car that blew your mind wanted to have one of your own. Well, Automotive Mechanic is something you should look into. You’ll learn about Cars,Trucks, and Diesels.
Whereas ordinary diesel direct fuel-injection systems have to build up pressure anew for each and every injection cycle, the new common rail (line) engines maintain constant pressure regardless of the injection sequence. This pressure then remains permanently available throughout the fuel line. The engine's electronic timing regulates injection pressure according to engine speed and load. The electronic control unit (ECU) modifies injection pressure precisely and as needed,
In today’s motorized life , It’s difficult to live without motor (Engines) and the main source of it’s input power is fossil fuels & partly electric power. In future these fuels or electricity may not be available widely as they are non renewable energies. So, it may be difficult to use engine with the fuels.