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MoTeC

Appendices

41

Message 8

Byte

Name

Scaling

0

Compound ID = 7

N/A

1

Reserved

N/A

2:3

LTC10 Lambda

Hi:Lo = x.xxxLa

4:5

LTC11 Lambda

Hi:Lo = x.xxxLa

6:7

LTC12 Lambda

Hi:Lo = x.xxxLa

Message 9

Byte

Name

Scaling

0

Compound ID = 8

N/A

1

Reserved

N/A

2:3

LTC13 Lambda

Hi:Lo = x.xxxLa

4:5

LTC14 Lambda

Hi:Lo = x.xxxLa

6:7

LTC15 Lambda

Hi:Lo = x.xxxLa

Message 10

Byte

Name

Scaling

0

Compound ID = 9

N/A

1

Reserved

N/A

2:3

LTC16 Lambda

Hi:Lo = x.xxxLa

4:5

Reserved

N/A

6:7

Reserved

N/A

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Содержание LTC

Страница 1: ...ECUs 26 Lambda and Air Fuel Ratio 28 LTC Operating Tips 30 Appendices 31 Appendix A Specifications 31 Appendix B Pinout 32 Appendix C Dimensions 34 Appendix D Wiring Details 37 Appendix E LTC CAN Mess...

Страница 2: ...LTC except where details specific to a particular model are discussed Features Accurate Lambda measurement even when the exhaust gas temperature is changing rapidly heating or cooling Ability to perfo...

Страница 3: ...uction 3 Accessories 57006 Bosch LSU 4 9 Lambda Sensor 57007 NTK Lambda Sensor 61059 MoTeC UTC USB to CAN used to communicate to the PC optional Note LTC is not compatible with MoTeC s CAN cable part...

Страница 4: ...onnector without affecting the performance of the sensor or the LTC NTK However the initial factory calibration method will not work as the calibration resistor is built into the original connector In...

Страница 5: ...re one cylinder may have more effect than another If possible do not place the sensor near exhaust slip joints some designs allow air to enter resulting in incorrect readings If the sensor has to be p...

Страница 6: ...releases LTC Manager Save the LTC Manager installation file in your preferred location for example desktop Double click the saved file to run the installer Follow the installation instructions on the...

Страница 7: ...hernet The gateway device must be selected in LTC Manager as shown below For gateway devices that have multiple CAN interfaces e g Display Loggers the appropriate CAN bus must also be selected The sel...

Страница 8: ...s and 125Kbps The bitrate conversion tool Tools Options allows an LTC to be converted to any of the four supported bitrates 1Mbps 500Kbps 250Kbps and 125Kbps Note During the bitrate conversion all dev...

Страница 9: ...nsor 1 and hex 461 for Lambda sensor 2 Start LTC Configuration Connect the unit to the PC see Appendix D Wiring Details Ensure the unit is powered Start LTC Manager o Click the LTC Manager icon on the...

Страница 10: ...n address in hex for interfacing with third party equipment OR Select Disabled to prevent an LTC from transmitting CAN messages While disabled an LTC will not heat the sensor or perform Lambda measure...

Страница 11: ...ndred Series ECUs The recommended address range for LTC messages is hex 460 to hex 47F OR Select the Custom Address check box and enter an address in hex for interfacing with third party equipment OR...

Страница 12: ...a Custom Table for another type of fuel e g Diesel Click OK The configuration updates will be sent to the LTC this may take several seconds LTC NTK Output Table The standard output table for the LTC...

Страница 13: ...wer end of the table users can enter their own values for richer mixtures The table will be reordered when Enter is pressed The Save As option is recommended in order to save the modified table with a...

Страница 14: ...a readings See Operation for information on configuring MoTeC Data Loggers or ECUs to use CAN Collect Configure Master and Slave Units To configure an LTC as the CAN Collect Master device select the C...

Страница 15: ...LTC Manager Window shows the configuration of CAN Collect Masters and Slaves The Master device is always shown as LTC unit 1 Master 1 and the slave devices are shown as LTC units 2 to 16 according to...

Страница 16: ...factory trimmed Free Air Calibration As a sensor ages the sensor calibration may change To maintain accurate readings the LTC allows for re calibration using the known oxygen concentration of free air...

Страница 17: ...he calibration process may take several minutes during which the calibration progress window is displayed The new calibration value is displayed This value should be recorded against the serial number...

Страница 18: ...libration is not recommended for normal use as it required calibrated testing gas o Free Air Calibration A calibration is performed with the sensor in free air To perform the free air calibration Clic...

Страница 19: ...k replacement of a sensor during the event Firmware Each version of the LTC Manager software includes a matching firmware version that must be sent to the LTC in order to operate correctly The Config...

Страница 20: ...unique serial numbers of all connected LTCs An LTCD will be displayed as two LTCs with the same serial number but the designators A and B to identify the two sensors Name The Name column shows the as...

Страница 21: ...ovides a useful means of monitoring several sensor values while tuning Sensor State The Sensor State column shows the operating state of all connected LTCs Sensor State Description Starting LTC hardwa...

Страница 22: ...are is corrupt Upgrade the firmware to restore operation Incompatible Firmware The LTC firmware is incompatible with LTC Manager Upgrade the firmware to restore operation LTC Temp The LTC Temp column...

Страница 23: ...smit readings Incompatible Config The configuration in the LTC is not compatible with the firmware in the LTC A new configuration can be sent to the LTC by changing the Setup or Calibration Corrupt Co...

Страница 24: ...he LTC CAN address specified in LTC Manager Receiving full LTC messages provides the most information about an LTC and requires one CAN section per LTC in the communications setup o Using LTC CAN Coll...

Страница 25: ...devices are configured in M1 Tune by setting the CAN bus Index and LTC Type The Index specifies the CAN ID e g 0x460 used to receive LTC CAN messages The Index for each configured LTC must be unique...

Страница 26: ...TC CAN Address in decimal The address must match the CAN address specified in LTC Manager For CAN Collect configuration The LTCs must be configured in LTC Manager for CAN Collect functionality using a...

Страница 27: ...s Input Source Predefined Calibration PLM 1 to PLM 12 81 Lambda PLM over CAN Example 1 LTC1 reading assigned to channel Lambda 1 Example 2 LTC1 to LTC4 readings assigned to Lambda Cyl channels Assign...

Страница 28: ...pendix F Lambda to Air Fuel Ratio Table for a quick reference table Engine Tuning with Lambda When tuning the engine the target Lambda or AFR is dependent on the tuning objective The following table c...

Страница 29: ...ent reduced sensor lifetime When using leaded fuel sensor element contamination will reduce the sensor lifetime substantially Typically sensor lifetime for high performance engines is at least 500 hou...

Страница 30: ...ely Following overrun fuel cut when the sensor has become saturated with oxygen it can take up to several seconds to resume accurate readings Engine misfires include hitting the rev limiter be it a fu...

Страница 31: ...A typical current plus the sensor heater current Heater current is typically 0 5 A 1 A up to 2 A on startup Communications 1 Mbit sec CAN Physical Dimensions 38 x 26 x 14 mm excluding wiring looms and...

Страница 32: ...onnector Mating connector supplied on sensor Pin No Wire Colour Description 1 Red Ip 2 Yellow Sensor 0 V 3 White Heater 4 Grey Heater 5 Green Ipr 6 Black Vs Power CAN Connector DTM 4pin M 68055 Mating...

Страница 33: ...on sensor Pin No Wire Colour Description 1 Blue Heater 2 Yellow Heater 3 Orange Rc 4 Black Sensor 0V 5 N C 6 Grey VS 7 White IP 8 Black Sensor 0V Power CAN Connector DTM 4pin M 68055 Mating connector...

Страница 34: ...34 Appendices Appendix C Dimensions...

Страница 35: ...MoTeC Appendices 35...

Страница 36: ...36 Appendices...

Страница 37: ...s examples show multiple options USB and Ethernet for the PC interface See section CAN Bus Interface for details on PC interfacing General CAN Bus Wiring Requirements The CAN bus should consist of a t...

Страница 38: ...minating Resistors at each end of the CAN Bus CAN LO CAN HI CAN Device CAN LO CAN HI CAN Device 5 4 These wires must be twisted Minimum one twist per 50mm 2in Short CAN Bus If the CAN bus is less than...

Страница 39: ...5 LTC Internal Temperature xxx C 6 Fault bits Heater short to Gnd1 Heater short to VBatt1 Heater open circuit Heater failed to heat1 Sensor wire short1 Internal fault1 Sensor Control fault 2 Bit 0 Bi...

Страница 40: ...5 Serial Number Message 5 Byte Name Scaling 0 Compound ID 4 N A 1 Reserved N A 2 3 LTC1 Master LTC Lambda Hi Lo x xxxLa 4 5 LTC2 Lambda Hi Lo x xxxLa 6 7 LTC3 Lambda Hi Lo x xxxLa Message 6 Byte Name...

Страница 41: ...Hi Lo x xxxLa 6 7 LTC12 Lambda Hi Lo x xxxLa Message 9 Byte Name Scaling 0 Compound ID 8 N A 1 Reserved N A 2 3 LTC13 Lambda Hi Lo x xxxLa 4 5 LTC14 Lambda Hi Lo x xxxLa 6 7 LTC15 Lambda Hi Lo x xxxL...

Страница 42: ...12 5 5 4 13 2 12 3 0 90 13 2 5 8 14 0 13 1 0 95 14 0 6 1 14 7 13 8 1 00 14 7 6 4 15 5 14 5 1 05 15 4 6 7 16 3 15 2 1 10 16 2 7 0 17 1 16 0 1 15 16 9 7 4 17 8 16 7 1 20 17 6 7 7 18 6 17 4 1 25 18 4 8...

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