Patent ID: 8733324

Claim:
A system for heating fuel supplied by a common rail fuel supply to an internal combustion engine, comprising: a high pressure fuel line; plural fuel injectors connected in series along the high pressure fuel line in the common rail; a continuous low pressure passage including a heat exchanging portion in close proximity to the high pressure fuel line; a temperature sensing device operable to generate a signal indicative of a temperature of fuel present in the high pressure fuel line; an electronic controller operable to switch between a first operation mode and a second operation mode based on the value of the generated signal; a heated fluid source operative to fluidly communicate with the continuous low pressure passage and circulate heated fluid to heat fuel present in the high pressure fuel line during said first operation mode; and a fuel leakage detection device operative to fluidly communicate with the continuous low pressure passage and detect fuel leakage from the high pressure fuel line in said second operation mode.