Fuel consumption optimization system

Patent metadata

Field	Value
Publication number	US-2026092572-A1
Application number	US-202519336990-A
Country	US
Kind code	A1
Filing date	Sep 23, 2025
Priority date	Oct 1, 2024
Publication date	Apr 2, 2026
Grant date	—

Abstract

A fuel consumption optimization system including a control unit configured to operate a power unit in a first measurement phase including activation of a first combustion chamber and deactivation of a second combustion chamber and a second measurement phase including deactivation of the first combustion chamber and activation of the second combustion chamber; a measurement unit configured to determine a first measurement corresponding to the first combustion chamber and a second measurement corresponding to the second combustion chamber; and wherein the control unit is configured to operate the power unit in an optimization phase including operation of one or more of the first combustion chamber in correlation with one or more of the first measurement and the second measurement and the second combustion chamber in correlation with one or more of the first measurement and the second measurement.

First claim

What is claimed is:

1 . A fuel consumption optimization system configured for use on a vehicle, the vehicle comprising a power unit including at least a first combustion chamber and a second combustion chamber, the fuel consumption optimization system comprising:
a control unit configured to operate the power unit in a first measurement phase including activation of the first combustion chamber and deactivation of the second combustion chamber and a second measurement phase including deactivation of the first combustion chamber and activation of the second combustion chamber; a measurement unit configured to determine a first measurement corresponding to one or more of a torque output and a fuel consumption of the first combustion chamber in the first measurement phase and a second measurement corresponding to one or more of a torque output and a fuel consumption of the second combustion chamber in the second measurement phase; and wherein the control unit is configured to operate the power unit in an optimization phase including operation of one or more of the first combustion chamber in correlation with one or more of the first measurement and the second measurement and the second combustion chamber in correlation with one or more of the first measurement and the second measurement.

2 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to operate the power unit in the first measurement phase at a first time and the second measurement phase at a second time.

3 . The fuel consumption optimization system of claim 2 , wherein the first time and the second time are successive.

4 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to operate the power unit in at least a first speed and a second speed during each of the first measurement phase and the second measurement phase.

5 . The fuel consumption optimization system of claim 4 , wherein the measurement unit is configured to determine the first measurement as a ratio of one or more of the torque output and the fuel consumption of the first combustion chamber in relation to at least the first speed and the second speed of the power unit and the second measurement as a ratio of one or more of the torque output and the fuel consumption of the second combustion chamber in relation to at least the first speed and the second speed of the power unit.

6 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to increase fuel delivered to the first combustion chamber to activate the first combustion chamber and to increase fuel delivered to the second combustion chamber to activate the second combustion chamber.

7 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to decrease fuel delivered to the first combustion chamber to deactivate the first combustion chamber and to decrease fuel delivered to the second combustion chamber to deactivate the second combustion chamber.

8 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to operate the power unit in the first measurement phase and the second measurement phase when a power demand of the vehicle is met.

9 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to one or more of increase or maintain an amount of fuel delivered to the first combustion chamber when the first measurement is greater than or equal to a predetermined efficiency threshold and decrease or maintain an amount of fuel delivered to the first combustion chamber when the first measurement is less than or equal to the predetermined efficiency threshold.

10 . The fuel consumption optimization system of claim 1 , wherein the control unit is configured to one or more of increase or maintain an amount of fuel delivered to the second combustion chamber when the second measurement is greater than or equal to a predetermined efficiency threshold and decrease or maintain an amount of fuel delivered to the second combustion chamber when the second measurement is less than or equal to the predetermined efficiency threshold.

11 . A vehicle comprising the fuel consumption optimization system of claim 1 , the vehicle comprising:
a power unit including at least a first combustion chamber and a second combustion chamber; an energy storage unit configured to store electrical energy; and an electric motor configured to convert electrical energy into mechanical energy to propel the vehicle.

12 . The vehicle of claim 11 , comprising an electric generator configured to cooperate with the power unit to convert mechanical energy generated by the power unit to electrical energy.

13 . A method for optimizing fuel consumption of a vehicle, the vehicle comprising a power unit including at least a first combustion chamber and a second combustion chamber, the method comprising:
operating the power unit in a first measurement phase including activating the first combustion chamber and deactivating the second combustion chamber and a second measurement phase including deactivating the first combustion chamber and activating the second combustion chamber; determining a first measurement corresponding to one or more of a torque output and a fuel consumption of the first combustion chamber in the first measurement phase and a second measurement corresponding to one or more of a torque output and a fuel consumption of the second combustion chamber in the second measurement phase; and operating the power unit in an optimization phase including operating of one or more of the first combustion chamber in correlation with one or more of the first measurement and the second measurement and operation of the second combustion chamber in correlation with one or more of the first measurement and the second measurement.

14 . The method of claim 13 , wherein operating the power unit in the optimization phase includes one or more of increasing or maintaining an amount of fuel delivered to the first combustion chamber when the first measurement is greater than or equal to a predetermined efficiency threshold and decreasing or maintaining an amount of fuel delivered to the first combustion chamber when the first measurement is less than or equal to the predetermined efficiency threshold.

15 . The method of claim 13 , wherein operating the power unit in the optimization phase includes one or more of increasing or maintaining an amount of fuel delivered to the second combustion chamber when the second measurement is greater than or equal to a predetermined efficiency threshold and decreasing or maintaining an amount of fuel delivered to the second combustion chamber when the second measurement is less than or equal to the predetermined efficiency threshold.

Assignees

• Volvo Truck Corp

Inventors

• Stjernberg Oscar
• Wilhelmsson Martin
• Kvist Roland
• Laine Leo

Classifications

• F02D2200/1002

  Output torque · CPC title

• F02D2200/0625

  Fuel consumption, e.g. measured in fuel liters per 100 kms or miles per gallon · CPC title

• F02D41/1406

  with use of a optimisation method, e.g. iteration · CPC title

• F02D41/0087

  Selective cylinder activation, i.e. partial cylinder operation (deceleration cut-off F02D41/123) · CPC title

• F02D41/38 Primary

  of the high pressure type · CPC title