Bosch

1. SESSION 2014-15
BOSCH
• Guided by:- Parag Kavatker

2. NEWER TECHNOLOGIES IN DIESEL
AND GASOLINE SYSTEM
PRESENTED BY : SANJEEV KR. PATHAK
(110106242)
B.TECH.-MECHANICAL ENGINEERING
SHARDA UNIVERSITY

3. 1. Introduction
• What is BOSCH?
• Founded in 1951, Bosch Limited is India’s largest automotive
component manufacturer and also one of the largest Indo –
German companies in India.
• Bosch has been present in India for more than 80 years - first
through a representative office in Calcutta since 1922, and from
1951 through its subsidiary Bosch Limited.Today the Bosch Group in
India has grown to include 6 group companies of which Bosch
Limited is the flagship business entity. Bosch Limited has its
manufacturing facilities in Bangalore, Nashik, Naganathapua, Jaipur
and Goa. The company has over the 12,236 associates. It
manufacturers and trades products as diverse as diesel and gasoline
fuel injection systems, automotive aftermarket products, auto
electricals, special purpose machines, packaging machines, electric
power tools and security systems. In 2011 Bosch Limited touched a
turnover of Rs. 8017.9 crores.

4. •The company has also developed excellent R&D
facilities in the country resulting in a strong and loyal
customer base. The market leadership of Bosch
Limited is a testimony to the high quality and
technology of its products.
•In addition to this, Bosch in India also has a strong
automotive training network that is spread across 15
cities thereby offering parts, bytes, services and
training all under one roof.

5. 2: Basic Engine Components under
the bonnet
• Indentification of diesel and petrol engines by
looking under the bonnet of the car
1. Petrol engines have spark plugs whereas diesel
engines have fuel injectors and no spark plugs.
2. Petrol Engines have throttling body whereas
diesel engine donot.
3. A charcoal canister is seen in petrol engines and
not in diesel engine cars.
4. Small fuel filters in petrol engines and big in
diesel engines.

6. MPFI (Multi Port Fuel Injection)
systems in petrol engines
• Multiport fuel injection injects fuel into the
intake ports just upstream of each cylinder's
intake valve, rather than at a central point
within an intake manifold. MPFI (or just MPI)
systems can be sequential, in which injection
is timed to coincide with each cylinder's intake
stroke.

7. MPFI Systems

8. Ignition Coil
• An ignition coil (also called a spark coil) is an induction
coil in an automobile's ignition
system which transforms the battery's low voltage to
the thousands of volts needed to create an electric
spark in the spark plugs to ignite the fuel. Some coils
have an internal resistor while others rely on a resistor
wire or an external resistor to limit the current flowing
into the coil from the car's 12-volt supply. The wire that
goes from the ignition coil to the distributor and the
high voltage wires that go from the distributor to each
of the spark plugs are called spark plug wires or high
tension leads.

9. Location of ignition coil in the
assembly

10. Exhaust system in cars
• An exhaust system is usually piping used to
guide reaction exhaust gases away from a
controlled combustion inside an engine
or stove. The entire system conveys burnt
gases from the engine and includes one or
more exhaust pipes. Depending on the overall
system design, the exhaust gas may flow
through one or more of:

11. • Cylinder head and exhaust manifold
• A turbocharger to increase engine power.
• A catalytic converter to reduce air pollution.
• A muffler (North America) / silencer (Europe),
to reduce noise.

12. Exhaust of a Vehicle

13. Diesel Pumps
Single-cylinder Pumps – PF (Pumps without inbuilt
camshaft)
• Wide variety of pumps to suit diverse engine needs (A,
B, K, Q, W, PF30, PF37, PF41, PF43)
• Varied pressure capabilities from 400-1050 bar
• Suitable for 3 to 200 hp/ cylinder diesel engines from 2
kW to 2300 kW
• Modular design
• Easier adaptation for different types of engines (1, 2, 3,
4,..16 cylinders)
• Easy maintenance

14. PF Pump

15. Multi-cylinder Pumps –
• Over 300 varieties in inline, catering to the
requirements of 2 to 12-cylinder engines
• Catering to engines with 25 hp to 540 hp
power output (20 kW to 400 kW)
• Speed range up to 3500 rpm (engine speed)
• Upgraded version (A3500) to meet Euro I
emission standards

16. Bosch Multi cylinder inline pump

17. Rotary Pumps – (Mechanical
Governer Type)
• Designed to achieve lower exhaust emissions
• Highly compact and lightweight
• Modular design for add-on devices
• Several add-on devices for emission control and driving
comfort
• Speed range up to 5000 rpm engine speed
• Built-in timing device
• Electrical shut off
• Enhanced driving comfort
• Easy adaptability to a variety of engine requirements
• Capable of working up to 950 bar peak line pressure at
pump end

18. Rotary pump

19. New Generation Fuel Injection
Systems
• The Distributor Type Injection Pump with Electronically
Controlled Injection Timing
• Equipped with Electronically Controlled Injection
Timing
• The ECU with stored data maps enables closed loop
control of injection timing by sensing injection begin
with the help of a Needle Movement Sensor
• A solenoid valve is installed on the injection-timing
device at the base of the pump
• Improves performance, while reducing emissions
• Exhaust Gas Recirculation (EGR) aids further reduction
in emissions

20. Common Rail (CR) Pump
• Designed for injection pressures of up to 1350
bar
• An inlet metered pump
• Reduction of fuel consumption
• Lowers fuel temperature
• Suitable for installation in passenger cars and
commercial vehicles

21. CR Pumps

22. QUESTION????

23. THANK YOU