Today’s diesels can produce more power with less fuel than ever before, not to mention the significant decrease in harmful exhaust emissions. At the root of this new wave of drivability improvements is the engineering marvel of high pressure common rail injection (HPCR).
HPCR systems produce twice as much injection pressure as mechanical fuel injection. Higher pressures mean finer fuel spray in the cylinder. Finer fuel spray means improved combustion and, ultimately, more power.
Injector tips are designed to handle the higher pressures in HPCR systems. However, diesel fuel is not. Consistently clean diesel is especially important in HPCR systems due to tight tolerances in the injection system. But, diesel fuel quality is notoriously inconsistent and therefore a threat to HPCR systems.
Extremely high pressure and temperature cause the fuel to breakdown, or coke, in the injector. While sophisticated enough to withstand HPCR pressure, the injectors in HPCR systems are still vulnerable to deposits. These deposits are called Internal Diesel Injector Deposits (IDID) and at a miniscule quantity can cause sticking and interrupt fuel flow to the cylinder, rendering the HPCR system inefficient.
This broken down fuel is also fed back into the injection system. On the way, the carbon begins laying on the fuel filter until it reaches a point of plugging. This is called a “black fuel filter.”
Reports of problems with HPCR systems began in 2008. Poor engine operation was observed, with symptoms including poor drivability, rough running, and inability to cold start engines.1 Without proper maintenance in HPCR systems, engine damage is certain.
BG Solution: Clean to prevent engine damage
Poured in the fuel tank, BG 245 Premium Diesel Fuel System Cleaner is carried by the fuel through the injection system. BG 245 removes and dissolves deposits from the entire diesel injection system, including fuel injectors and combustion chambers. It is especially effective in removing heavy deposits in the injectors of HPCR systems. Plus, BG 245 contains a fuel lubricity agent to protect components from wear and cetane improver for cold starts.
Most diesel fuel system cleaners remove deposits from the injector tip but fail to reach inside the injector itself. BG 245 removes and dissolves deposits from the entire diesel injection system, including inside fuel injectors (IDID) and combustion chambers.
Security blanket for diesel engines
BG 245 not only cleans and maintains HPCR diesel injection systems, it’s backed with lifetime diesel engine and fuel system protection. A BG Diesel Performance Oil Change with BG 245 every 10,000 miles (16,000 km) yields up to $6,000 in coverage for lubricated parts in the engine under BG Forever Diesel®. Click here for more information.
The diesel industry sees HPCR systems as an engineering marvel. BG sees BG 245 as the next engineering marvel cleanup product.
1 “Internal Injector Deposits in High-Pressure Common Rail Diesel Engines” SAE International: Afton Chemical Corporation. Oct. 25, 2010.