Driving force control system for vehicle
First Claim
1. A driving force control system for vehicle, which is configured to control a target speed of an engine serving as a prime mover by selecting a control mode based on an index representing a driving preference of a driver, from a first mode for operating the engine in a manner to achieve a target output of the engine while optimizing a fuel economy, and a second mode for operating the engine in a manner to achieve the target output of the engine at a speed of the engine lower than that achieved while optimizing the fuel economy, the driving force control system comprising:
- an acceleration sensor that detects a longitudinal acceleration of the vehicle that is changed by an operation of the driver; and
a processor that includes control logic, which when executed;
calculates the index based on at least the longitudinal acceleration of the vehicle that is changed by the operation of the driver and that is detected by the acceleration sensor;
determines a lower limit speed of the engine based on the index provided that the second mode is selected; and
restricts a lower limit value of the target speed of the engine to the lower limit speed based on the index in case the target speed of the engine exceeds the lower limit speed under the second mode.
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Accused Products
Abstract
A driving force control system for vehicle for controlling a target speed of an engine serving as a prime mover by selecting a control mode based on an index representing a driving preference of a driver. The control mode is selected from a first mode for operating the engine to achieve the target speed while optimizing a fuel economy, and a second mode for operating the engine to achieve the target speed at a speed lower than that achieved while optimizing the fuel economy. The driving force control system is configured to determine a lower limit speed of the engine based on the index provided that the second mode is selected, and to restrict a lower limit value of the target speed of the engine to the lower limit speed in case the target speed of the engine exceeds the lower limit speed under the second mode.
22 Citations
10 Claims
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1. A driving force control system for vehicle, which is configured to control a target speed of an engine serving as a prime mover by selecting a control mode based on an index representing a driving preference of a driver, from a first mode for operating the engine in a manner to achieve a target output of the engine while optimizing a fuel economy, and a second mode for operating the engine in a manner to achieve the target output of the engine at a speed of the engine lower than that achieved while optimizing the fuel economy, the driving force control system comprising:
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an acceleration sensor that detects a longitudinal acceleration of the vehicle that is changed by an operation of the driver; and a processor that includes control logic, which when executed; calculates the index based on at least the longitudinal acceleration of the vehicle that is changed by the operation of the driver and that is detected by the acceleration sensor; determines a lower limit speed of the engine based on the index provided that the second mode is selected; and restricts a lower limit value of the target speed of the engine to the lower limit speed based on the index in case the target speed of the engine exceeds the lower limit speed under the second mode. - View Dependent Claims (2, 3, 4, 5)
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6. A driving force control system for vehicle, which is configured to control a target speed of an engine serving as a prime mover by selecting a control mode based on an index representing a driving preference of a driver, from a first mode for operating the engine in a manner to achieve a target output of the engine while optimizing a fuel economy, and a second mode for operating the engine in a manner to achieve the target output of the engine at a speed of the engine lower than that achieved while optimizing the fuel economy, the driving force control system comprising:
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an acceleration sensor that detects a longitudinal acceleration of the vehicle that is changed by an operation of the driver; and a processor that includes control logic, which when executed; calculates the index based on at least the longitudinal acceleration of the vehicle that is changed by the operation of the driver and that is detected by the acceleration sensor; determines a lower limit speed of the engine based on the index provided that the second mode is selected; and holds the target speed of the engine to the lower limit speed based on the index, in case the target speed of the engine exceeds the lower limit speed under the second mode, and then falls below the lower limit speed. - View Dependent Claims (7, 8, 9, 10)
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Specification