# US 9,434,274 B2 · Speed control system for motor vehicles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,274 B2 - Document ID: US9434274B2 - Status: Granted - Kind: B2 - Application number: 14/261,118 - Filed: 2014-04-24 - Published: 2014-10-30 - Granted: 2016-09-06 - Earliest claimed: 2013-04-25 - Assignees: Bayerische Motoren Werke Aktiengesellschaft - Applicants: Bayerische Motoren Werke Aktiengesellschaft - Inventors: Walter Kagerer - Web page: https://patentgrep.com/patent/US9434274B2 ## CPC - B60L 15/10: for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current (electric devices for safety purposes B60L3/00) - B60W 30/16: Control of distance between vehicles, e.g. keeping a distance to preceding vehicle - B60L 2240/42: related to electric machines - B60W 30/18072: {Coasting} - B60W 2030/1809: {Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral} - B60W 2710/105: Output torque - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT ## Abstract A speed control system for a motor vehicle has an electronic control device which generates actuation signals for controlling the speed of the motor vehicle to a specified desired speed, and a control element, on the actuation of which an intervention which influences the speed control is performed. The control element is designed in the form of a button. When the button is pressed, the system intervenes in the active speed control for the time for which the button is pressed in such a way that no drive torque is generated. When the button is no longer pressed, the original speed control is resumed. ## Claims ### Claim 1 A speed control system for a motor vehicle, comprising: an electronic control unit operatively configured to generate actuation signals for controlling a speed of the motor vehicle to a specified desired speed; a control element coupled with the electronic control unit, actuation of the control element intervening in speed control and influencing same; wherein the control element comprises a button configured such that: (a) when the button is pressed, an intervention in active speed control occurs only for a time duration in which the button is actively being pressed such that no drive torque is generated; and (b) when the button is no longer pressed, original speed control is resumed, wherein, when the intervention in the active speed control for the time duration in which the button is actively being pressed occurs, speed control is completely interrupted. ### Claim 2 (depends on 1) The speed control system according to claim 1, wherein the motor vehicle has an automatic transmission or an automated gearbox; when the button is pressed, the intervention in the active speed control occurs for the time duration in which the button is pressed such that no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs. ### Claim 3 (depends on 1) The speed control system according to claim 1, wherein the button is configured such that a first intervention influencing the speed control is generated when the button is pressed briefly, and when the button is pressed for a longer time period, the intervention in the active speed control for the time duration in which the button is pressed occurs such that no drive torque is generated and, at an end of the longer time period, original speed control is resumed. ### Claim 4 The speed control system according to 3, wherein the button operates as a first control element for switching on, switching off and/or interrupting speed control, and when the button is pressed briefly, active speed control is interrupted, interrupted speed control is deactivated and/or deactivated speed control is activated, and when the button is pressed for a longer time period, the intervention in the active speed control for the time duration in which the button is pressed occurs such that no drive torque is generated. ### Claim 5 (depends on 4) The speed control system according to claim 4, wherein the button operates a second control element for specifying a current speed as a new desired speed, and when the button is pressed briefly and speed control is active, the current speed is specified as the new desired speed and/or, if the speed control is interrupted, the speed control is activated to the current speed as the desired speed, and when the button is pressed for a longer time period, the intervention in the active speed control for the time duration in which the button is pressed occurs such that no drive torque is generated. ### Claim 6 (depends on 5) The speed control system according to claim 5, wherein the button is operated as a third control element for reactivating the interrupted speed control to the stored desired speed and/or a stored separation distance, and when the button is pressed briefly, the interrupted speed control is reactivated to the stored desired speed and/or the stored separation, and when the button is pressed for a longer time period, the intervention in the active speed control for the time duration in which the button is pressed occurs such that no drive torque is generated. ### Claim 7 (depends on 3) The speed control system according to claim 3, wherein when the button is pressed for the longer time period, the speed control is completely interrupted for the time duration in which is button is pressed. ### Claim 8 (depends on 4) The speed control system according to claim 4, wherein when the button is pressed for the longer time period, the speed control is completely interrupted for the time duration in which is button is pressed. ### Claim 9 (depends on 5) The speed control system according to claim 5, wherein when the button is pressed for the longer time period, the speed control is completely interrupted for the time duration in which is button is pressed. ### Claim 10 (depends on 6) The speed control system according to claim 6, wherein when the button is pressed for the longer time period, the speed control is completely interrupted for the time duration in which is button is pressed. ### Claim 11 (depends on 3) The speed control system according to claim 3, wherein the vehicle has an automatic transmission or an automated gearbox, and further wherein when the button is pressed for the longer time period, no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs for the time duration in which the button is pressed. ### Claim 12 (depends on 4) The speed control system according to claim 4, wherein the vehicle has an automatic transmission or an automated gearbox, and further wherein when the button is pressed for the longer time period, no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs for the time duration in which the button is pressed. ### Claim 13 (depends on 5) The speed control system according to claim 5, wherein the vehicle has an automatic transmission or an automated gearbox, and further wherein when the button is pressed for the longer time period, no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs for the time duration in which the button is pressed. ### Claim 14 (depends on 6) The speed control system according to claim 6, wherein the vehicle has an automatic transmission or an automated gearbox, and further wherein when the button is pressed for the longer time period, no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs for the time duration in which the button is pressed. ### Claim 15 (depends on 7) The speed control system according to claim 7, wherein the vehicle has an automatic transmission or an automated gearbox, and further wherein when the button is pressed for the longer time period, no drive torque is generated and an interruption in power transmission between an engine and drive wheels of the motor vehicle occurs for the time duration in which the button is pressed. ### Claim 16 A method of operating a speed control system of a motor vehicle having an electronic control unit that generates actuation signals for controlling a speed of the motor vehicle at least to a specified desired speed, the method comprising the acts of: providing a control element in the form of a button coupled to the electronic control unit actuation of the button influencing speed control of the speed control system; generating a first intervention in the speed control when the button is pressed briefly; when the button is pressed for a longer time period, intervening in active speed control for only the time duration in which the button is actively being pressed such that no drive torque is generated; and when the button is no longer pressed, resuming original speed control, wherein, when the intervention in the active speed control for the time duration in which the button is actively being pressed occurs, speed control is completely interrupted.