US 2026/0210307 A1Published application

A system for mitigating knocking in an engine and a method thereof

AssigneeMahindra & Mahindra Limited

InventorsSatish Kumar SIVARAJU, Easwar Ram SREEDHAR, Karthi RAMANATHAN, Muthu RAMAKRISHNAN, Navaneetha Kannan RAVINDRAN, Vivekanand VEERAMANI

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Abstract

The present disclosure relates to engines. The present disclosure envisages a system for mitigating knocking having a fuel injection unit configured to be operable between a base injection mode and a knock resistant mode. The system comprises at least one sensing unit configured to sense vibrations of the engine, and a control unit configured to receive the intensity of vibrations to generate a first actuating signal. A first actuator receives the first actuating signal to alter the ignition angle and reduce the vibrations of the engine. The control unit generate a second actuating signal, which is received by a second actuator which engages the fuel injection unit in the knock resistant mode upon generation of the second actuating signal to mitigate engine knocking upon evaluation of at least one critical parameter.

Claims10

Dependent claims

A system (100) for mitigating knocking in an engine, wherein said engine is connected to an input unit configured to receive an input corresponding to a desired engine output and generate an input signal, said engine having a fuel injection unit and an ignition unit, said fuel injection unit being configured to be operable between a base injection mode and a knock resistant mode, and said ignition unit being configured to be actuated at a predetermined ignition angle corresponding to the input signal, said system (100) comprising:

at least one sensing unit (102) mounted on the engine, said sensing unit (102) configured to sense the intensity of vibrations of the engine in an operative configuration thereof, and further configured to generate a corresponding first sensed signal data;
a control unit (106) configured to communicate with said sensing unit to receive said first sensed signal data, said control unit (106) configured to generate a first actuating signal corresponding to said first sensed signal data;
and
a first actuator (116) configured to be in communication with said control unit (106) to receive said first actuating signal, said first actuator (106) configured to alter the ignition angle from the predetermined ignition angle in reference to said first actuating signal to facilitate reduction in the vibrations of the engine,
wherein said system is characterized by:
a feedback loop wherein said sensing unit (102) is further configured to sense vibrations after the alter of said ignition angle and generate a second sensed signal data corresponding to the the modified vibration characteristics, said control unit (106) is further configured to receive said second sensed signal data to generate a second actuating signal if said second sensed signal data is more than a predetermined threshold value;
and
a second actuator (118) configured to be connected to said control unit (106) to receive said second actuating signal, said second actuator (118) configured to engage the fuel injection unit in the knock resistant mode upon generation of said second actuating signal to thereby said system (100) dynamically controls the engine parameters to minimize the knocking and optimize the engine performance.

5 more elements

A turbocharged direct injection spark ignition engine connected to an input unit configured to receive an input corresponding to a desired engine output and generate an input signal, said turbocharged engine having a fuel injection unit and an ignition unit, said fuel injection unit being configured to be operable between a base injection mode and a knock resistant mode, and said ignition unit being configured to be actuated at a predetermined ignition angle corresponding to the input signal, said turbocharged engine having a system (100) for mitigating knocking in said turbocharged engine, said system (100) comprising:

at least one sensing unit (102) mounted on the engine, said sensing unit (102) configured to sense the intensity of vibrations of the engine in an operative configuration thereof, and further configured to generate a first sensed signal data;
a control unit (106) configured to communicate with said sensing unit (102) to receive said first sensed signal data, said control unit (106) configured to generate a first actuating signal corresponding to said first sensed signal data;
and
a first actuator (116) configured to be in communication with said control unit (106) to receive said first actuating signal, said first actuator (106) configured to alter the ignition angle from the predetermined ignition angle in reference to said first actuating signal to facilitate reduction in the vibrations of the engine,
wherein said system (100) is characterized by:
a feedback loop wherein said sensing unit (102) is further configured to sense vibrations after the alter of said ignition angle and generate a second sensed signal value corresponding to the the modified vibration characteristics, said control unit (106) is further configured to receive said second sensed signal value to generate a second actuating signal if said second sensed data is more than a predetermined threshold value;
and
a second actuator (118) configured to be connected to said control unit (106) to receive said second actuating signal, said second actuator (118) configured to engage the fuel injection unit in the knock resistant mode upon generation of said second actuating signal to mitigate engine knocking.

5 more elements

Dependencies are inferred from the claim text.