This comprehensive 44-page PDF file contains the official VAG Self-Study Program 74 (SSP 74), focused entirely on the development and mechanical function of the Skoda 1.2-liter TSI turbocharged petrol engine (specifically the 77kW / 105 PS variant, engine code CBZB). Representing a major step in Skoda’s engine downsizing strategy, this ultra-lightweight (89.5 kg) EA111-family engine was designed to replace the older, naturally aspirated 1.6-liter MPI engines, offering greater torque and lower CO2 emissions across models like the Fabia II, Octavia II, and Yeti. This technical training manual is an absolute must-have for VAG technicians, diagnostic specialists, and DIY enthusiasts looking to fully understand this highly popular powerplant.
Please note: As a Self-Study Program, this document focuses heavily on engineering design, structural layouts, and operational theory. It is not a step-by-step rebuild or workshop manual, though the theoretical knowledge it provides is crucial for diagnosing complex cooling or forced-induction faults.
This detailed technical training manual covers the following key engineering topics:
- Engine Mechanics and Lightweight Design: A deep dive into the physical construction of the engine. It meticulously details the die-cast aluminum open-deck cylinder block, the lightweight crankshaft, and the specific piston design required to handle the pressures of direct injection and turbocharging.
- SOHC Valvetrain: Essential reading for understanding engine breathing. It maps out the Single Overhead Camshaft (SOHC) layout, which operates two valves per cylinder via roller rocker arms, and explains the operation of the timing chain drive system.
- Advanced Split-Cooling System: A complete breakdown of how the engine manages heat to improve efficiency. It explains the dual-circuit cooling system, which uses two thermostats to separate the cooling of the cylinder block from the cylinder head, ensuring rapid warm-up.
- Air Supply and Turbocharging: An overview of the forced induction system. It details the electrically actuated wastegate on the turbocharger and the integrated, water-cooled charge air cooler (intercooler) built directly into the intake manifold, which runs on its own dedicated low-temperature cooling loop.
- Fuel System and Engine Management: A comprehensive look at the high-pressure direct fuel injection system, the ignition system, and the specific sensors utilized by the Simos 10 engine management unit.
Whether you are trying to understand the exact flow of the dual cooling circuits, diagnosing a fault with the electronic turbo wastegate actuator, or researching the mechanical differences between the CBZB and earlier engines, SSP 74 is the definitive technical resource.
CONTENTS
- Brief description of the engine
- Mechanical part of the engine
- Cylinder block
- Crank mechanism
- Pistons, conrods
- Chain drive for the control system and the oil pump
- Cylinder head
- Injection valves
- Turbocharger
- Cooling systems
- Lubrication system
- Engine control system
- System overview
- Engine control unit
- Charge pressure control
- Coolant pump control solenoid valve
- Wiring diagram
Language: English
Format: PDF
Pages: 44
Self Study Program 74 – Skoda 1.2 CBZB 77kW TSI petrol engine with turbocharger PDF free online
