#efficient #powerful #Internal combustion engine

Engine management systems

Engine management systems, the innovative core technology for powerful and efficient riding

Electronic engine management systems are the core of efficient technology which allows two-wheelers and powersports vehicles to fulfill new emission regulations. Bosch offers the full range of engine management systems' technologies specially designed for two-wheelers. This includes components for fuel injection and supply, air management, ignition and exhaust-gas treatment as well as engine control units.

up to

16 %

reduction in CO₂ emissions compared with carburetor engines.¹⁾

_{¹⁾ (Bosch research 2012)}

fulfills

Euro 5/ BS6

Emission regulations up to Euro 5 and BS6 (Bharat stage) including OBD I/II

full

system range

engine management systems' technologies for two-wheelers and powersports vehicles

Core components of the engine management systems

Solution overview

Engine control unit for small bikes

The engine control unit for small bikes is a small and light engine control unit for small bikes especially in emerging markets.

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Engine control unit for high-performance bikes

The engine control unit for high-performance bikes is a powerful and widely scalable engine control unit.

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Fuel injector two-wheeler

The fuel injector was adapted for smaller size engines and two-wheeler-specific mounting

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Spark plug

The spark plug’s main task is to generate the spark to ignite the compressed air-fuel mixture inside the combustion chamber.

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Overview of all solutions

Core components of the engine management systems

Engine control unit for small bikes

Fuel injector

Spark plug

Engine control unit for high-performance bikes

Fuel injector

Spark plug

Features of the electronic engine management systems from Bosch

Engine management systems technologies for two-wheelers

Engine management systems from Bosch enable precise, central control of all functions relevant for engine operation leading to reduced emissions, higher safety, comfort, and a more enjoyable, dynamic riding. Electronic control allows fuel to be burnt efficiently. Engine management systems can precisely control the amount of fuel injected as well as the timing of ignition. The technology also offers the opportunity to manage the engine by monitoring vehicle feedback and adapting accordingly – based on the lambda value, the regulation of the injector ensures the optimum combination of air and fuel.

Bosch offers the full range of engine management systems technologies specially designed for two-wheelers. This includes components for fuel injection and supply, air management, ignition and exhaust-gas treatment as well as engine control units. Complete electronic engine control, in combination with sophisticated sensors, provides significant benefits over conventional carburetor systems, ranging from intelligently controlled fuel injection to improved emission values.

Additional components

Lambda sensor mini heated

Lambda sensor

Small bikes and high-performance bikes - Lambda sensor measures the oxygen content in the exhaust gas and helps in optimizing the air/fuel-ratio. The lambda sensor mini heated was developed specially for the needs of two-wheelers. The M12 thread and the optimum protection tube design allows compact installation, with optimized heater power for two-wheelers . The planned life time is about 100.000 km.

Lambda sensor

Small bikes and high-performance bikes - Lambda sensor reacts to an exhaust gas transition from lean to rich (and/or rich to lean) by an immediate output signal jump. By measuring the oxygen content in the exhaust gas, the engine control unit gets relevant information to control the air/fuel-ratio in the combustion chamber.

Crankshaft speed sensor

Small bikes and high-performance bikes - The crankshaft speed sensor measures the speed, position, and, optionally, the direction of rotation of the crankshaft. This data is used by engine management systems for controlling injection and/or ignition timing. The sensor is a hall or inductive sensor. The crankshaft is fitted with a target wheel which the sensor scans using a non-contact method. The reference point is determined by a missing element in the pulse wheel. Due to its high accuracy, the crankshaft speed sensor helps reducing emissions and fuel consumption.

Camshaft speed sensor

High-performance bikes - As a non-contacting hall sensor, the camshaft speed sensor measures the position of the camshaft and helps to reduce emissions and fuel consumption due to high accuracy.

Knock sensor

High-performance bikes - The knock sensor is mounted on the crankcase and measures the structure-borne noise using a piezoelectric sensing element. Knocking is detected with its typical frequencies and transformed by the sensor into electrical signals which are fed to the control unit. The knock sensor helps to reduce fuel consumption and, subsequently, CO₂ emissions.

Temperature sensor

Small bikes and high-performance bikes - The temperature sensor measures the temperature of the coolant, oil or fuel. This information is used to improve cold-start capability and for engine cooling and protection. The temperature sensor helps controlling various functions, such as cold starting, for safer and more comfortable engine operation.

Fuel-supply module

Small bikes and high-performance bikes - The fuel supply module is built into the fuel tank. Its task is to supply the right amount of fuel from the tank to the fuel injector.

Mechanical throttle body assembly (licensing only)

Small bikes - The mechanical throttle body assembly controls the air supply to the cylinder by reducing or enlarging the intake manifold cross-section for efficient, economical and dynamic engine operation.

Electronic throttle body

High-performance bikes - The electronic throttle body comprises an electrically driven throttle body and a non-contacting angular-position sensor for position feedback. The electronic engine management system triggers the throttle body electrically. Trigger input variables are the accelerator grip position and the requirements of systems that can influence engine torque, including motorcycle stability control (MSC) system. The design of the electronic throttle body is optimized to meet weight and size requirements for two-wheeler applications.

Manifold air-pressure and temperature sensor

High-performance bikes - The manifold air-pressure and temperature sensor measures the pressure and air temperature in the intake manifold. The micromechanical sensor contains a piezoresistive sensor element which generates a measurable electrical voltage when pressure is applied. The air pressure can be measured via the voltage. The sensor ensures an optimized air-fuel mixture for more efficient combustion.

Throttle position sensor

Small bikes - The throttle position sensor measures the angle of rotation of the throttle valve at gasoline engines. The signal of the throttle position sensor is used to enhance the filling prediction.