Control unit for motor-assisted bicycle

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• means for generating an assist drive force corresponding to the actual running resistance;
• and
• means for calculating and detecting an acceleration of said vehicle;
• wherein said means for generating the assist drive power increases the assist drive force generated by said motor drive system in accordance with the acceleration after a predetermined value of time.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• and
• means for controlling and generating an assist drive force corresponding to the actual running resistance of said vehicle;
• means for setting a predetermined running resistance of an ordinary bicycle;
• means for determining the assist drive force generated by said motor drive system in accordance with a difference between the actual running resistance and ordinary bicycle's running resistance;
• and
• means for determining an inclination of a road surface on the basis of the actual running resistance;
• wherein the motor drive force is increased when the road surface is a flat road or an upward slope;
• and the increasing operation of the motor drive force is performed by reducing the ordinary bicycle's running resistance,
• wherein the assist drive force is decreased for a predetermined period of time if the inclination of the running road surface is changed into an upward inclination, and the drive force is increased for a predetermined period of time if the inclination of the running road surface is changed into a downward inclination.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• and
• means for controlling and generating an assist drive force corresponding to the actual running resistance of said vehicle;
• means for detecting a vehicle speed change amount for a predetermined period of time;
• and
• means for detecting a total drive force obtained by adding the assist drive force of said motor to the manual drive force for the predetermined period of time;
• wherein the actual running resistance is calculated as a function of the vehicle speed change amount to the total drive force.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• and
• means for controlling and generating an assist drive force corresponding to the actual running resistance of said vehicle, wherein the assist drive force generated by said motor drive system is controlled in such a manner that the actual running resistance of said vehicle substantially corresponds to a flat road running resistance of said vehicle,
• wherein the assist drive force is decreased for a predetermined period of time if the inclination of the running road surface is changed into an upward inclination, and the motor drive force is increased for a predetermined period of time if the inclination of the running road surface is changed into a downward inclination.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• and
• means for controlling and generating a first assist drive force corresponding to the actual running resistance of said vehicle;
• and
• means for deciding an operational state of said vehicle,
• wherein the assist drive force is decreased for a predetermined period of time if the inclination of the running road surface is changed into an upward inclination, and the motor drive force is increased for a predetermined period of time if the inclination of the running road surface is changed into a downward inclination.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• means for controlling and generating a first assist drive force corresponding to the actual running resistance of said vehicle;
• means for deciding an operational state of said vehicle;
• and
• means for controlling a regeneration instruction, wherein a regeneration instruction is supplied to said motor drive system in accordance with the operational state of said vehicle when the actual running resistance is a negative value.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• means for controlling and generating a first assist drive force corresponding to the actual running resistance of said vehicle;
• means for deciding an operational state of said vehicle;
• means for generating a second assist drive force for said motor drive system corresponding to a leg-driven manual power and a crank shaft rotational speed;
• and
• control means for generating said first drive force and said second drive force selectively or in combination in accordance with the operational state.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to said rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• means for controlling and generating a first assist drive force corresponding to the actual running resistance of said vehicle;
• means for deciding an operational state of said vehicle;
• means for generating a second assist drive force for said motor drive system corresponding to a leg-driven manual power and a crank shaft rotational speed;
• and
• means for deciding an inclination state of a road surface on the basis of the actual running resistance;
• wherein either the first drive force and the second drive force, or only the second drive force are selectively generated if it is decided that the road surface is a flat road on the basis of the inclination state.

A control unit for a motor-assisted vehicle including a manual powered drive system for transmitting a manual drive force to a rear wheel and a motor drive system for transmitting a motor drive force by a motor to aid rear wheel, said control unit comprising:

• means for detecting an actual running resistance of a vehicle;
• means for controlling and generating an assist drive force corresponding to the actual running resistance of said vehicle so as to maintain a flat road running resistance whether the vehicle is moving on a flat road, upward slope or downward slope;
• means for detecting a vehicle speed change amount for a predetermined period of time;
• and
• means for detecting a total drive force obtained by adding the assist drive force of said motor to the manual drive force for the predetermined period of time wherein the actual running resistance is calculated as a function of the vehicle speed change amount to the total drive force.