Electronic Throttle Control - Revision history

Satiric: Fixed header formatting, reference formatting.

2023-01-22T00:37:14Z

Fixed header formatting, reference formatting.

Satiric: Getting rid of excess newlines

2023-01-21T00:17:44Z

Getting rid of excess newlines

Satiric: Expand on ETC benefits

2023-01-21T00:17:08Z

Expand on ETC benefits

Satiric: Fill out ETC page a bit more

2023-01-21T00:07:34Z

Fill out ETC page a bit more

SpookySimon: /* System Design */ documentation reqd by fsae rules

2020-05-20T00:02:56Z

System Design: documentation reqd by fsae rules

SpookySimon: outlining

2020-05-18T21:06:57Z

outlining

Toaster: added to Internal Combustion Category

2020-05-17T02:57:13Z

added to Internal Combustion Category

SpookySimon: minor formatting

2020-05-15T18:36:00Z

minor formatting

SpookySimon: creation and outline

2020-05-15T18:32:42Z

creation and outline

New page

[[Intake|Intake]]
===history?===
wasnt always allowed
===benefits===
Throttle maps for driver or event or weather
===drawbacks===

* reliability
* cost
** throttle body
** sensors
** computation (needs an ECM that can handle or separate module)
* simplicity

@@ Line 2: / Line 2: @@
 Electric cars, by necessity, use ETC. The concept is the same but there are various small differences in the rule book that are worth looking over.
-=System Design=
+==System Design==
-==Sensors==
+===Sensors===
-===Accelerator Pedal Position Sensors (APPS)===
+====Accelerator Pedal Position Sensors (APPS)====
 An ETC system needs a way to electronically sense the position of the throttle pedal. This is done with the APPSs, which are usually [[Rotary Position Sensor | rotary position sensors]]. For reliability, FSAE<ref>Formula SAE Rules 2023 V2.0, T.4.2.</ref> and FSG<ref>Formula Student Rules 2023, T 11.8.</ref> both require that two APPSs are used.
-===Throttle Position Sensors (TPS)===
+====Throttle Position Sensors (TPS)====
-These sensors are often confused with the APPSs. The difference is that while the APPSs measure throttle pedal position, the TPSs measure the throttle position. They are usually [[Rotary Position Sensor|rotary position sensors]].
+These sensors are often confused with the APPSs. The difference is that while the APPSs measure throttle pedal position, the TPSs measure the throttle position at the throttle body. They are usually [[Rotary Position Sensor|rotary position sensors]].
-===Brake System Encoder (BSE)===
+====Brake System Encoder (BSE)====
 If the driver is pressing both the throttle and the brake simultaneously for a significant amount of time, the throttle pedal might be stuck open. For this reason, the system must monitor the braking system and make sure that the throttle closes in the event of an accelerator pedal failure. The system measures this with the BSE, which is often either a brake fluid pressure sensor or a brake pedal travel sensor.
 Note that the term BSE does not appear in the Formula Student Germany rules.
-==Safety Features==
+===Safety Features===
-===Sensor Plausibility Checks===
+====Sensor Plausibility Checks====
-If the TPSs don't agree with each other, or the APPSs don't agree with each other, or any of these sensors are outputting a value outside of the normal operating range, the rules require that the car must stop.<ref>Formula SAE Rules 2023, T.4.2, T.4.3, IC.4.7.</ref><ref>Formula Student Rules 2023, T 11.8., CV 1.6.6</ref>
+If the TPSs don't agree with each other, or the APPSs don't agree with each other, or any of these sensors are outputting a value outside of the normal operating range, the rules require that the car must stop.<ref>Formula SAE Rules 2023 V2.0, T.4.2, T.4.3, IC.4.7.</ref><ref>Formula Student Rules 2023, T 11.8., CV 1.6.6</ref>
-===Brake System Plausibility Device (BSPD)===
+====Brake System Plausibility Device (BSPD)====
-If the sensors report that the driver is pressing both the throttle and the brake simultaneously for a significant amount of time, the throttle pedal could be stuck open. For this reason, the system must monitor the throttle and the braking system, and make sure that the throttle closes in the event of an accelerator pedal failure. This is done with the BSPD, a standalone circuit that monitors the TPS and BSE signals and shuts the throttle if there's an implausibility.<ref>Formula SAE Rules 2023, IC.4.8.</ref><ref>Formula Student Rules 2023, T 11.6.</ref>
+If the sensors report that the driver is pressing both the throttle and the brake simultaneously for a significant amount of time, the throttle pedal could be stuck open. For this reason, the system must monitor the throttle and the braking system, and make sure that the throttle closes in the event of an accelerator pedal failure. This is done with the BSPD, a standalone circuit that monitors the TPS and BSE signals and shuts the throttle if there's an implausibility.<ref>Formula SAE Rules 2023 V2.0, IC.4.8.</ref><ref>Formula Student Rules 2023, T 11.6.</ref>
-==Throttle Actuation==
+===Throttle Actuation===
 Many teams use the 32mm [https://www.bosch-motorsport.com/content/downloads/Raceparts/Resources/pdf/Data%20Sheet_68749835_Electronic_Throttle_Body.pdf Bosch throttle body.]
@@ Line 23: / Line 23: @@
 ===Control Strategies===
 PID or whatever else y'all goons use
-==Documentation==
+==Benefits==
 ===Throttle cut on upshift===
 By putting a limit switch on the shift lever, you can easily detect when an upshift is about to occur and blip the throttle so the driver doesn't have to. If implemented properly this system can be quite reliable and shorten upshift times.
@@ Line 35: / Line 32: @@
 ===Programmable throttle maps===
 Many ECUs allow you to switch out the throttle map with a push of a button. This allows you to have multiple throttle maps for different conditions: different drivers, different events, different weather, etc.
-=Drawbacks=
+==Drawbacks==
 * reliability
 * cost

@@ Line 26: / Line 26: @@
 * notice of intent
 * FMEA
 =Benefits=
 ===Throttle cut on upshift===
@@ Line 36: / Line 35: @@
 ===Programmable throttle maps===
 Many ECUs allow you to switch out the throttle map with a push of a button. This allows you to have multiple throttle maps for different conditions: different drivers, different events, different weather, etc.
 =Drawbacks=
 * reliability

@@ Line 28: / Line 28: @@
 =Benefits=
-Throttle maps for driver or event or weather
+===Throttle cut on upshift===
 =Drawbacks=
 * reliability

@@ Line 1: / Line 1: @@
 =System Design=
 ==Sensors==
-rules<br />
+===Accelerator Pedal Position Sensors (APPS)===
-safety<br />
+An ETC system needs a way to electronically sense the position of the throttle pedal. This is done with the APPSs, which are usually [[Rotary Position Sensor | rotary position sensors]]. For reliability, FSAE<ref>Formula SAE Rules 2023 V2.0, T.4.2.</ref> and FSG<ref>Formula Student Rules 2023, T 11.8.</ref> both require that two APPSs are used.
-[[Rotary Position Sensor]]
+===Throttle Position Sensors (TPS)===
-===APPS===
+These sensors are often confused with the APPSs. The difference is that while the APPSs measure throttle pedal position, the TPSs measure the throttle position. They are usually [[Rotary Position Sensor|rotary position sensors]].
-===BSE===
+===Brake System Encoder (BSE)===
-===TPS===
+If the driver is pressing both the throttle and the brake simultaneously for a significant amount of time, the throttle pedal might be stuck open. For this reason, the system must monitor the braking system and make sure that the throttle closes in the event of an accelerator pedal failure. The system measures this with the BSE, which is often either a brake fluid pressure sensor or a brake pedal travel sensor.
-redeundancy
-==Actuation==
+Note that the term BSE does not appear in the Formula Student Germany rules.
-===Common OEM Solutions===
+==Safety Features==
-Bosch ETC
+===Sensor Plausibility Checks===
 ===Control Strategies===
 PID or whatever else y'all goons use
 ==Documentation==
 * notice of intent
@@ Line 29: / Line 36: @@
 ** computation (needs an ECM that can handle or separate module)
 * complexity
-=History?=
+=References=
 [[Category:Internal Combustion]]

@@ Line 13: / Line 13: @@
 ===Control Strategies===
 PID or whatever else y'all goons use
-===Hard Stop===
+==Hard Stop==
-====Benefits====
+===Benefits===
-====Drawbacks====
+===Drawbacks===
 =Benefits=
 Throttle maps for driver or event or weather

@@ Line 1: / Line 1: @@
 [[Intake|Intake]]
-===history?===
+=history?=
 wasnt always allowed
-===benefits===
+=benefits=
 Throttle maps for driver or event or weather
-===drawbacks===
+=drawbacks=
 * reliability