What is CRDi Engine? CRDi Full Form

What is CRDi Engine? CRDi Full Form

CRDi Full Form:- CRDi Full Form is Common Rail Direct Injection. A Common Rail is used to supply the fuel directly into the Cylinders of the Engine by Injectors. On Diesel Engines, There are Three Main Components of the CRDi System. and they are listed below-

  1. High-Pressure Pump
  2. Common Rail
  3. Injectors.


The CRDi Fuel system consists of three main components are mentioned above. Using these components with Diesels Engines are called CRDi Engines.

CRDi fuel system all components
CRDi Fuel System: Image Source

Advantages of CRDi – Common Rail Direct Injection Systems

There are many Advantages of CRDiCommon Rail Direct Injection in Diesel Engines. Some of them listed below.

  • Low Consumption of Fuel
  • Low Emissions in Diesel Vehicles
  • High Efficiency
  • Low Noise and Vibration in Engines
  • Superior Pick-up
  • Higher Mileage
  • Improved Performance
  • Smooth Driving Experience

Disadvantages of CRDi

There are Some Disadvantages of CRDiCommon Rail Direct Injection in Diesel Engines. Some of them listed below.

  • Expensive technology as a comparison to traditional fuel systems
  • Expensive Parts
  • High-Cost Maintainance


Common Problems in CRDi

Basically, there are some symptoms indicates that CRDi System is making trouble in the vehicle. Some of them also can cause other parts too, So Be careful of that.

  • Black Smoke on acceleration and idle
  • White Smoke in cold starting and it smells very bad
  • Blue Smoke on running Condition
  • Engine Missing or Misfiring
  • Knocking Sound on idle and acceleration
  • Starting Problem
  • Late Starting of Vehicle in Cold Condition
  • Late Starting of Vehicle in Hot / Raised Temp. Condition
  • Low Mileage
  • Low Engine Power
  • Vehicles Engine Turn Off on High Speed
  • Jerking on running Condition of vehicles
  • Check Engine Light Coming in Cluster
  • Accelerator Pedal not working on running Condition for Sometime on high speed

Most Common Failure Reasons of CRDi

CRDi System is a highly complex and tested product for a long period. But, It gets failure due to some parameters and it can be rectified after proper diagnosis. Some of them are listed below.

  • Adulterated Fuel or Bad Quality Fuel
  • Bad Condition of Diesel / Fuel Filter
  • Improper Service maintenance
  • Dirty Fuel Tank or Junked Fuel Tank

There are Some Auto Makers use CRDi as different names on their vehicles. and it becomes the topic of search. So, here are some Companies that use CRDi as.

  • Hyundai and Kia use CRDi – That stands for Common Rail Direct Injection
  • Mahindra & Mahindra use CRDe – That stands for Common Rail Diesel Engine
  • Maruti Suzuki use DDiS – That Stands for Diesel Direct Injection System
  • Ford uses TDCi – That stands for Turbocharged Diesel Common Rail Injection
  • Audi/Volkswagen uses TDI – That stands for Turbocharged Diesel direct injection
  • Honda uses I-DTEC – That stands for Intelligent Diesel Technology Electronic control


The Major Manufacturers of CRDi Fuel Systems are –

  • Bosch
  • Continental
  • Denso
  • Delphi





Sanjeev Shah

I am professionally a Mechanical Engineer and i love blogging and for that purpose i have created the website for automotive contents.

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