Electronic control method for vehicles

Claim 3

A method according to claim 1, wherein the start control mode is a very low speed control mode when the amount of accelerator pedal depression is less than the set value, in which very low speed control mode the clutch (4) is controlled in a half-clutch range and the amount of clutch engagement and of fuel supplied are decided based on the amount of accelerator pedal depression, and the start control mode is an ordinary start mode when the amount of accelerator depression is greater than the set value, in which ordinary start mode the clutch (4) is controlled until fully engaged, clutch operating speed is decided based on the amount of accelerator pedal depression, and the amount of fuel supplied is decided based on the amount of accelerator pedal depression and the amount of clutch engagement.

Claim 4

A method according to claim 2, further comprising steps of: (i) calculating an amount of fuel to be supplied from the amount of accelerator pedal depression and, in the ordinary start mode, the amount of clutch engagement, and (ii) sensing an amount of fuel presently being supplied, comparing said amount with the amount of fuel calculated in step (i), and controlling the throttle actuator (3) in accordance with the result of the comparison.

Claim 5

A method according to claim 2 or 3, wherein an engagement operating speed of the clutch actuator (6) is decided by the amount of accelerator pedal depression and corrected by the amount of clutch engagement and a change in engine rpm.

Claim 6

A method according to claim 2, 3 or 4, wherein there is provided an ordinary start control mode in which engine rpm is compared with a comparative value of engine rpm obtained by calculation from the amount of clutch engagement, and an engaging operation of the clutch actuator (6) is halted when the engine rpm is less than the comparative value of engine rpm.

Claim 7

A method according to claim 1, further comprising steps of: (i) sensing the amount of engagement of the clutch (4) by the clutch stroke sensor (6a), (ii) calculating an amount of fuel to be supplied from the amount of accelerator pedal depression and the amount of clutch engagement, and (iii) sensing an amount of fuel presently being supplied, comparing said amount with the amount of fuel to be supplied calculated in step (ii), and controlling the throttle actuator (3) in accordance with the result of the comparison.

Claim 8

An electronic control system for controlling the starting of a vehicle equipped with an accelerator pedal sensor (9a) for sensing an amount of depression of an accelerator pedal (9), a throttle actuator (3) for controlling an amount of fuel supplied to an engine (2), an engine rotation sensor for sensing rpm of the engine (2), a clutch actuator (6) for controlling an amount of engagement of a clutch (4), a clutch stroke sensor (6a) for sensing the amount of engagement of the clutch (4), and an electronic control apparatus (10) which receives detection signals from each of said sensors (9a, 2a, 6a) for controlling the throttle actuator (3) and the clutch actuator (6) based on the detection signals, characterised by means for carrying out the steps of: (a) sensing the amount of depression of the accelerator pedal (9) by the accelerator pedal sensor (9a), (b) performing a comparison to determine whether the amount of accelerator pedal depression is greater than or less than a set value, (c) selecting a start control mode depending upon the amount of accelerator pedal depression, and (d) controlling the throttle actuator (3) and the clutch actuator (6) in the control mode selected in said step (c).

Claim 9

An electronic control system for controlling the starting of a vehicle equipped with an accelerator pedal sensor (9a) for sensing an amount of depression of an accelerator pedal (9), a throttle actuator (3) for controlling an amount of fuel supplied to an engine (2), an engine rotation sensor for sensing rpm of the engine (2), a clutch actuator (6) for controlling an amount of engagement of a clutch (4), a clutch stroke sensor (6a) for sensing the amount of engagement of the clutch (4), and an electronic control apparatus (10) which receives detection signals from each of said sensors (9a, 2a, 6a) for controlling the throttle actuator (3) and the clutch actuator (6) based on the detection signals, characterised by means for carrying out the steps of: (a) sensing the amount of depression of the accelerator pedal (9) by the accelerator pedal sensor (9a), (b) performing a comparison to determine whether the amount of accelerator pedal depression is greater than or less than a set value, (c) selecting a start control mode depending upon the amount of accelerator pedal depression, and (d) controlling the throttle actuator (3) and the clutch actuator (6) in the control mode selected in said step (c).

Claim 10

An electronic control system according to claim 7, wherein the start control mode is a very low speed control mode when the amount of accelerator pedal depression is less than the set value, in which very low speed control mode the clutch (4) is controlled in a half-clutch range and the amount of clutch engagement and of fuel supplied are decided based on the amount of accelerator pedal depression, and the start control mode is an ordinary start mode when the amount of accelerator depression is greater than the set value, in which ordinary start mode the clutch (4) is controlled until fully engaged, clutch operating speed is decided based on the amount of accelerator pedal depression, and the amount of fuel supplied is decided based on the amount of accelerator pedal depression and the amount of clutch engagement.

Claim 11

An electronic control system according to claim 8 further comprising means for carrying out the steps of: (i) calculating an amount of fuel to be supplied from the amount of accelerator pedal depression and, in the ordinary start mode, the amount of clutch engagement, and: (ii) sensing an amount of fuel presently being supplied, comparing said amount with the amount of fuel calculated in step (i), and controlling the throttle actuator (3) in accordance with the result of the comparison.

Claim 12

An electronic control system according to claim 8 or 9, wherein an engagement operating speed of the clutch actuator (6) is decided by the amount of accelerator pedal depression and corrected by the amount of clutch engagement and a change in engine rpm.

Claim 13

An electronic control system according to claim 8, 9, or 10, wherein there is provided an ordinary start control mode in which engine rpm is compared with a comparative value of engine rpm obtained by calculation from the amount of clutch engagement, and an engaging operation of the clutch actuator (6) is halted when the engine rpm is less than the comparative value of engine rpm.

Claim 14

An electronic control system according to claim 7, further comprising means for carrying out the steps of: (i) sensing the amount of engagement of the clutch (4) by the clutch stroke sensor (6a), (ii) calculating an amount of fuel to be supplied from the amount of accelerator pedal depression and the amount of clutch engagement, and (iii) sensing an amount of fuel presently being supplied, comparing said amount with the amount of fuel to be supplied calculated in step (ii), and controlling the throttle actuator (3) in accordance with the result of the comparison.