SESSION 2014-15

• Guided by:- Parag Kavatker

BOSCH

NEWER TECHNOLOGIES IN DIESEL AND GASOLINE SYSTEM

PRESENTED BY : SANJEEV KR. PATHAK (110106242)

B.TECH.-MECHANICAL ENGINEERINGSHARDA UNIVERSITY

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, Jaipurand 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.

•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.

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.

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.

MPFI Systems

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.

Location of ignition coil in the assembly

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:

• 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.

Exhaust of a Vehicle

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

PF Pump

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

Bosch Multi cylinder inline pump

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

Rotary pump

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

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

CR Pumps

QUESTION????

THANK YOU